2011 Holiday Gift Ideas

Showing posts with label Plant of the day. Show all posts
Showing posts with label Plant of the day. Show all posts

Monday, August 22, 2011

Plant of the Day - Romneya - Matilija Poppy


Romneya

From Wikipedia, the free encyclopedia
Romneya (pronounced /ˈrɒmniːə/) is a genus of flowering plants belonging to the poppy family (Papaveraceae). There are two species in genus Romneya, which was named for Irish astronomer John Thomas Romney Robinson. They are known commonly as Matilija poppies (pronounced /məˈtɪlɨhɑː/ mə-til-i-hah) or tree poppies and are native to southern California and northern Mexico.
They are perennial subshrubs with woody stems. They may grow to a height of 2.5 meters (8 ft) and a width of 1 m (35 in), with the flowers up to 13 cm (5 in) across. The silvery green leaves are deeply cut, with a small fringe of hairs at the margins.
They are notable for their large white flowers with intense yellow centers, blooming in summer. Romneya produce the largest flowers of any members of the poppy family. These flowers prefer a warm, sunny spot and fertile soil with good water drainage. They are not easily grown but once established are difficult to remove. In the wild, they are known as "fire followers" as they can be frequently, but not exclusivley, found in burned areas.

Also known as "fried egg flower".

The two species are:


Wednesday, August 12, 2009

Plant of the Day - Hedychium coronarium (Ginger Lily)

Hedychium coronarium
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
(unranked): Commelinids
Order: Zingiberales
Family: Zingiberaceae
Genus: Hedychium
Species: H. coronarium
Binomial name: Hedychium coronarium J. Koenig

The White ginger lily (Hedychium coronarium) is originally from the Himalayas region of Nepal and India where it is known as dolan champa दोलन चम्पा in Hindi, takhellei angouba in Manipuri, sontaka in Marathi, and suruli sugandhi in Kannada. The species was introduced to Hawaii by settlers. The native Hawaiians refer to white ginger as 'awapuhi', using the juice of mature seed head as a hair and skin treatment.

In Brazil it is very common and considered to be an invasive weed. It was introduced in the era of slavery, brought to the country by African slaves who used its leaves as mattresses.
In Cuba it is the National Flower, known as "Mariposa blanca" literally "White Butterfly Flower", due to its similarity with a flying white butterfly. This particular species is incredibly fragrant and women used to adorn themselves with these flowers in Spanish colonial times; because of the intricate structure of the inflorescence, women hid and carried secret messages important to the independence cause under it.[citation needed] It is said that a guajiro's (farmer's) house is not complete without a white ginger in its garden.[citation needed] Today the plant has gone wild in the cool rainy mountains in Sierra del Rosario, Pinar del Rio Province in the west, Escambray Mountains in the center of the island, and in Sierra Maestra in the very west of it, but the plant is not endemic of Cuba.

Source: Wikipedia>

Tuesday, August 11, 2009

Plant of the Day - Pentas

Pentas
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Pentas
Species: See Text

Pentas is a genus of the Rubiaceae family of flowering plants. Pentas lanceolata is a particularly popular species. The plants have dark green, lance-shaped, somewhat furry and deeply veined leaves providing a backdrop for prolific clusters of never-ending, five-petaled flowers. These may be red, white, lavender, purple, or shades of pink. Some are two-toned. All are extremely attractive to butterflies, and the red and dark pink varieties delight hummingbirds. Also Pentas is compatible with the dry soil and intense heat of the Floridian sun. Lastly It can withstand full sunlight with little to no care. They look great in pots, baskets, and borders.

Source: Wikipedia>

Monday, August 10, 2009

Plant of the Day - Tiarella (Foamflower)

Tiarella or Foamflower
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Saxifragales
Family: Saxifragaceae
Genus: Tiarella L.

Species: See below

The Foamflowers (Tiarella) are a popular species of wildflower and garden plant. They belong to the Saxifrage family (Saxifragaceae). Some species are:

Tiarella cordifolia (Heartleaved Foamflower)
Tiarella trifoliata (Threeleaved Foamflower)
Tolmiea (piggyback plant)
Many hybrids are known and cultivated

Tiarella trifoliata (Threeleaf Foamflower) is a dicot in the family Saxifragaceae. It is a perennial herb that grows in the late spring. It is endemic to the low to moderate elevation moist forests of western North America.

The flowers are bell-shaped, white, solitary from an elongate, leafless panicle. The calyx lobes are 1.5–2.5 mm and petals are 3-4 mm. Basal leaves are 15-80 mm long and up to 120 mm wide, trifoliate or palmately 3- to 5-lobed. Cauline leaves are infrequent and much smaller.

Source: Wikipedia>

Friday, August 7, 2009

Plant of the Day - Nelumbo nucifera (Lotus)

Nelumbo nucifera
From Wikipedia, the free encyclopedia
(Photo: Nelumbo nucifera flower)

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
Order: Proteales
Family: Nelumbonaceae
Genus: Nelumbo
Species: N. nucifera
Binomial name: Nelumbo nucifera Gaertn.

Nelumbo nucifera, known by a number of names including Indian lotus, sacred lotus, bean of India, or simply lotus. Botanically, Nelumbo nucifera (Gaertn.) may also be referred to by its former names, Nelumbium speciosum (Wild.) or Nymphaea nelumbo. This plant is an aquatic perennial. Under favorable circumstances its seeds may remain viable for many years, with the oldest recorded lotus germination being from that of seeds 1300 years old recovered from a dry lakebed in northeastern China.

A common misconception is referring to the lotus as a water-lily (Nymphaea), an entirely different plant as can be seen from the centre of the flower, which clearly lacks the structure that goes on to form the distinctive circular seed pod in the Nelumbo nucifera. It should also be noted that water-lilies come in colors of white to yellow where as the lotus only in hues of pink.

Native to Greater India and commonly cultivated in water gardens, the lotus is the national flower of India and Vietnam

Read more from Wikipedia>

Thursday, August 6, 2009

Plant of the Day - Anisacanthus species

Anisacanthus
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Acanthaceae
Genus: Anisacanthus Nees
Species: See text.

Anisacanthus is a genus of plants in the family Acanthaceae native to tropical and subtropical regions of the Americas, and sometimes cultivated for use in xeriscape landscaping. They are sometimes known as "desert honeysuckles", though this term is shared with the genus Ancistranthus, and is something of a misnomer as true honeysuckles belong to the family Caprifoliaceae.

Wednesday, August 5, 2009

Plant of the Day - Buddleja

Buddleja
From Wikipedia, the free encyclopedia
Buddleia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Scrophulariaceae
Genus: Buddleja L.
Species: ~ 100 species

Buddleja, often spelled Buddleia is a genus of flowering plants. It is now included in the Scrophulariaceae, though in the past was previously classified in either the Loganiaceae or in a family of its own, the Buddlejaceae. The plant was named after the Reverend Adam Buddle who was a botanist and a rector in Essex, England.

The roughly 100 species are mostly shrubs, a few being trees; the largest species reach 30 m tall, but most species rarely exceed 5 m tall. Both evergreen and deciduous species occur. They are native throughout the warmer parts of the New World from the southern United States south to Chile, and widely in the Old World in Africa and the warmer parts of Asia, but absent as natives from Europe and Australasia. The species are divided into two groups based on their floral type, those in the New World being dioecious, and those in the Old World being monoecious.

The leaves are lanceolate in most species, and arranged in opposite pairs on the stems (alternate in one species, B. alternifolia); they range from 1-30 cm long. The flowers are produced in dense panicles 10-50 cm long; each individual flower is tubular, about 1 cm long, with the corolla divided into four spreading lobes (petals), about 3-4 mm across. Flower colour varies widely, with white, pink, red, purple, orange or yellow flowers produced by different species and cultivars; they are rich in nectar and often strongly scented. The fruit is a small capsule about 1 cm long and 1-2 mm diameter, containing numerous small seeds; in a few species (previously classified in the separate genus Nicodemia) the capsule is soft and fleshy, forming a berry.

Nomenclature
The botanic name has been the source of some confusion. By the usual practice of botanical Latin, the spelling of a genus name made from "Buddle" would be "Buddleia". However, Linnaeus wrote it down as "Buddleja", and never changed it, so by the rule of naming priority, "Buddleja" should be preferred, though the i/j interchange could be modernized as an orthographical variant. Even so, the usage is confused, and inconsistencies are common, even within single texts.


Tuesday, August 4, 2009

Plant of the Day - Crocus sativus (Saffron)

Crocus sativus or Saffron
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Iridaceae
Subfamily: Crocoideae
Genus: Crocus
Species: C. sativus
Binomial name: Crocus sativus L.

Saffron is a spice derived from the dried stigma of the flower of the saffron crocus (Crocus sativus), a species of crocus in the family Iridaceae. The flower has three stigmas, which are the distal ends of the plant's carpels. Together with its style, the stalk connecting the stigmas to the rest of the plant, these components are dried and used in cooking as a seasoning and coloring agent. Saffron, for decades the world's most expensive spice by weight, is native to Southwest Asia.

Saffron is characterized by a bitter taste and an iodoform- or hay-like fragrance; these are caused by the chemicals picrocrocin and safranal. It also contains a carotenoid dye, crocin, that gives food a rich golden-yellow hue. Saffron also has medicinal applications.

The word saffron originated from the 12th-century Old French term safran, which derives from the Latin word safranum. Safranum is also related to the Italian zafferano and Spanish azafrán. Safranum comes from the Arabic word aṣfar (أَصْفَر‎), which means "yellow," via the Persian paronymous zaʻfarān (زَعْفَرَان‎). Saffron is known as "Kasubha" in Filipino, "Kesar" in Hindi/Sanskrit, and "Kong" in Urdu.

Read more from Wikipedia>

Monday, August 3, 2009

Plant of the Day - Achillea millefolium (Yarrow)

Achillea millefolium
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Achillea
Species: A. millefolium
Binomial name: Achillea millefolium L.

Achillea millefolium or Yarrow (other common names Common Yarrow, Gordaldo, Nosebleed plant, Old Man's Pepper, Sanguinary, Milfoil, Soldier's Woundwort, Thousand-leaf (as its binomial name affirms), Thousand-seal) is a flowering plant in the family Asteraceae, native to the Northern Hemisphere.

Common Yarrow is an erect herbaceous perennial plant that produces one to several stems (0.2 to 1m tall) and has a rhizomatous growth form. Leaves are evenly distributed along the stem, with the leaves near the middle and bottom of the stem being the largest. The leaves have varying degrees of hairiness (pubescence). The leaves are 5-20 cm long, bipinnate or tripinnate, almost feathery, and arranged spirally on the stems. The leaves are cauline and more or less clasping. The inflorescence has 4 to 9 phyllaries and contains ray and disk flowers which are white to pink. There are generally 3 to 8 ray flowers that are ovate to round. Disk flowers range from 15 to 40. The inflorescence is produced in a flat-topped cluster. Yarrow grows up to 3500m above sea level. The plant commonly flowers from May through June, and is a frequent component in butterfly gardens. Common yarrow is frequently found in the mildly disturbed soil of grasslands and open forests. Active growth occurs in the spring. In North America, there are both native and introduced genotypes, and both diploid and polyploid plants.




Friday, July 31, 2009

Plant of the Day - Casia fistula (Golden Shower Tree)

Golden Shower Tree
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
(unranked): Eurosids I
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Tribe: Cassieae
Subtribe: Cassiinae
Genus: Cassia
Species: C. fistula
Binomial name: Cassia fistula L.

The Golden Shower Tree (Cassia fistula as described by Linné[citation needed], and see below for other names) is a flowering plant in the family Fabaceae, native to southern Asia, from southern Pakistan east through India to Myanmar and south to Sri Lanka. It is the national tree of Thailand.

It is a medium-sized tree growing to 10-20 m tall with fast growth. The leaves are deciduous or semi-evergreen, 15-60 cm long, pinnate with 3-8 pairs of leaflets, each leaflet 7-21 cm long and 4-9 cm broad. The flowers are produced in pendulous racemes 20-40 cm long, each flower 4-7 cm diameter with five yellow petals of equal size and shape. The fruit is a legume is 30-60 cm long and 1.5-2.5 cm broad, with a pungent odour and containing several seeds. The seeds are poisonous.

Read more from Wikipedia>

Thursday, July 30, 2009

Plant of the Day - Cotinus coggygria (Smoke Tree)

Eurasian smoketree
From Wikipedia, the free encyclopedia
(Redirected from Cotinus coggygria)

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Sapindales
Family: Anacardiaceae
Genus: Cotinus
Species: C. coggygria
Binomial name: Cotinus coggygria

The Eurasian smoketree or smoke tree (Cotinus coggygria, syn. Rhus cotinus) is native to a large area from southern Europe, east across central Asia and the Himalaya to northern China.

It is a multiple-branching shrub growing to 5-7 m tall with an open, spreading, irregular habit, only rarely forming a small tree. The leaves are 3-8 cm long, rounded oval, green with a waxy glaucous sheen. The autumn colour can be strikingly varied, from peach and yellow to scarlet. The flowers are numerous, produced in large inflorescences 15-30 cm long; each flower 5-10 mm diameter, with five pale yellow petals. Most of the flowers in each inflorescence abort, elongating into yellowish-pink to pinkish-purple feathery plumes, which surround the small (2-3 mm) drupaceous fruit that do develop.

Wednesday, July 29, 2009

Plant of the Day - Senna

Senna (genus)
From Wikipedia, the free encyclopedia
(Photo: Senna multiglandulosa)

Scientific classification
Kingdom: Plantae
Division: Angiospermae
(unranked): Eudicots
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Tribe: Cassieae
Subtribe: Cassiinae
Genus: Senna Mill.
Species: Around 250, see text

Senna (from Arabic sanā), the sennas, is a large genus of around 250 species of flowering plants in the family Fabaceae, subfamily Caesalpinioideae. This diverse genus is native throughout the tropics, with a small number of species reaching into temperate regions. Almost all species were at one time or another placed in Cassia, a close relative which until recent decades served as a "wastebin taxon" to hold all Cassiinae.[1] The species were reassigned by Howard Samuel Irwin and Rupert Charles Barneby, but this process is not entirely complete and some corrections may still take place.

Typically Senna species have yellowish flowers. They may be herbs, smallish trees or even a kind of liana, but typically are shrubs or subshrubs.

Senna species make good ornamental plants and are used for landscape gardening. The wide variety of species and ecological adaptations makes at least a handful of sennas suitable for any climate warmer than cool-temperate.

Tuesday, July 28, 2009

Plant of the Day - Bougainvillea

Bougainvillea
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Caryophyllales
Family: Nyctaginaceae
Genus: Bougainvillea

Bougainvillea is a genus of flowering plants native to South America from Brazil west to Peru and south to southern Argentina (Chubut Province). Different authors accept between four and 18 species in the genus. The plant was discovered in Brazil in 1768, by Philibert Commerçon, French Botanist accompanying French Navy admiral and explorer Louis Antoine de Bougainville during his voyage of circumnavigation.

They are thorny, woody, vines growing anywhere from 1-12 meters tall, scrambling over other plants with their hooked thorns. The thorns are tipped with a black, waxy substance. They are evergreen where rainfall occurs all year, or deciduous if there is a dry season. The leaves are alternate, simple ovate-acuminate, 4-13 cm long and 2-6 cm broad. The actual flower of the plant is small and generally white, but each cluster of three flowers is surrounded by three or six bracts with the bright colors associated with the plant, including pink, magenta, purple, red, orange, white, or yellow. Bougainvillea glabra is sometimes referred to as "paper flower" because the bracts are thin and papery. The fruit is a narrow five-lobed achene.
Bougainvillea are relatively pest-free plants, but may suffer from worms and aphids. The larvae of some Lepidoptera species also use them as food plants, for example the Giant Leopard Moth.

Monday, July 27, 2009

Plant of the Day - Passiflora (Passion Flower)

Passion flower
From Wikipedia, the free encyclopedia
Photo:Passiflora pardifolia was only described in 2006

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
(unranked): Eurosids I
Order: Malpighiales
Family: Passifloraceae
Genus: Passiflora L.
Species: About 500, see text

The passion flowers or passion vines (Passiflora) are a genus of about 500 species of flowering plants, the namesakes of the family Passifloraceae. They are mostly vines, with some being shrubs, and a few species being herbaceous. For information about the fruit of the passiflora plant, see passionfruit. The monotypic genus Hollrungia seems to be inseparable from Passiflora, but further study is needed.
The family Passifloraceae is found worldwide, except in Europe and Antarctica. Passiflora is also absent from Africa, where many other members of the family Passifloraceae occur (e.g. the more plesiomorphic Adenia).

Nine species of Passiflora are native to the USA, found from Ohio to the north, west to California and south to the Florida Keys. Most other species are found in South America, as well as China and Southern Asia (17 species), New Guinea, Australia (four, possibly more species) and New Zealand (a single endemic species). But new species continue to be described: for example, P. pardifolia and P. xishuangbannaensis are only known to science since 2006 and 2005, respectively.

Species of Passiflora have been naturalised beyond their native ranges. For example, Blue Passion Flower (P. caerulea) now grows wild in Spain.[1] The purple passionfruit (P. edulis) and its yellow relative flavicarpa are introduced in many tropical regions as commercial crops.


Friday, July 24, 2009

Plant of the Day - Pussy Willow

Pussy Willow
From Wikipedia, the free encyclopedia

Pussy willow branch with catkins in early springPussy willow is a name given to many of the smaller species of the genus Salix (willows and sallows) when their furry catkins are young in early spring. These species include (among many others):

Goat willow or goat sallow (Salix caprea), a small tree native to northern Europe and northwest Asia.

Grey willow or grey sallow (Salix cinerea), a small tree native to northern Europe
American pussy willow (Salix discolor), native to northern North America.

Before the male catkins of these species come into full flower they are covered in fine, greyish fur, leading to a fancied likeness to tiny cats, also known as "pussies". The catkins appear long before the leaves, and are one of the earliest signs of spring. At other times of year trees of most of these species are usually known by their ordinary names.

Wednesday, July 22, 2009

Plant of the Day - Lachenalia (Soldier Boys)

Lachenalia is a genus with bulbs in the Hyacinthaceae family found in Namibia and South Africa. There are around 110 species (80 of those are found in the Cape region.) Most of these have a dormancy period and grow new roots each year. Polyxena has been transferred to Lachenalia by J.C. Manning, P. Goldblatt & M.F. Fay in "A revised generic synopsis of Hyacinthaceae in sub-Saharan Africa, including new combinations and the new tribe Pseudoprospereae", Edinburgh Journal of Botany 60(3): 533-568 (2004). Those species continue to be found on the Polyxena wiki page until they are widely accepted as Lachenalias. Information about Lachenalia from Don Journet was provided on the pbs list in three posts in February 2007. The first was a general introduction and discussion about growing the species, the second discussed propagation, and the third covered pests, diseases, general discussion, and references.

Tuesday, July 21, 2009

Plant of the Day - Tibouchina semidecandra (Princess Flower)

Tibouchina semidecandra
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Subclass: Rosidae
Order: Myrtales
Family: Melastomataceae
Genus: Tibouchina
Species: T. semidecandra
Binomial name: Tibouchina semidecandra

Tibouchina semidecandra, the princess flower, glory bush, or lasiandra, is a sprawling, evergreen shrub or small ornamental tree native to Brazil and ranges from 10 to 15 feet (20 feet with proper training) in height. It can be trimmed to any size and still put on a vivid, year-long flower display. The dark green, velvety, four to six-inch-long leaves have several prominent longitudinal veins instead of the usual one, and are often edged in red. Large, royal purple blossoms, flaring open to five inches, are held on terminal panicles above the foliage, creating a spectacular sight when in full bloom. Some flowers are open throughout the year but they are especially plentiful from May to January. Princess-Flower is ideal for the mixed shrubbery border or used in small groupings to compound the impact of bloom-time.

Friday, July 17, 2009

Plant of the Day - Mimulus (Monkey Flower)

Mimulus
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Lamiales
Family: Phrymaceae
Genus: Mimulus Linnaeus
Species Presently some 150, but see text.

Mimulus is a diverse plant genus, the monkey-flowers and musk-flowers. The about 150 species are currently placed in the family Phrymaceae. The genus has traditionally been placed in Scrophulariaceae. The removal of Mimulus from that family has been supported by studies of chloroplast DNA first published in the mid-1990s[citation needed]. Multiple studies of chloroplast DNA and two regions of nuclear rDNA[2] suggest that the genera Phryma, Berendtiella, Hemichaena, Leucocarpus, Microcarpeae, Peplidium, Glossostigma, and Elacholoma are all derived from within Mimulus and would need to be rearranged.

It is recognized that there are two large groups of Mimulus species, with the largest group of species in western North America, and a second group with center of diversity in Australia. A few species also extend into eastern North America, eastern Asia and southern Africa. This enlarged group is a part of the newly redefined Phrymaceae.

Thursday, July 16, 2009

Protea
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
Order: Proteales
Family: Proteaceae
Subfamily:Proteoideae
Genus: Protea L.
Species: See text

Protea is both the botanical name and the English common name of a genus of flowering plants, sometimes also called sugarbushes.

The genus Protea was named in 1735 by Carolus Linnaeus after the Greek god Proteus who could change his form at will, because proteas have such different forms. Linneaus's genus was formed by merging a number of genera previously published by Herman Boerhaave, although precisely which of Boerhaave's genera were included in Linnaeus's Protea varied with each of Linnaeus's publications.

Proteas attracted the attention of botanists visiting the Cape of Good Hope in the 1600s. Many species were introduced to Europe in the 1700s, enjoying a unique popularity at the time amongst botanists.

Wednesday, July 15, 2009

Plant of the Day - Echinacea (Coneflower)

Echinacea
From Wikipedia, the free encyclopedia

Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Echinacea
Species: See text

Echinacea is a genus of nine species of herbaceous plants in the family Asteraceae commonly called Coneflower. All are strictly native to eastern and central North America. The plants have large, showy heads of composite flowers, blooming from early to late summer.


The genus name is from the Greek echino, meaning "spiny," due to the spiny central disk. They are herbaceous, drought-tolerant perennial plants growing to 1 or 2 m in height. The leaves are lanceolate to elliptic, 10 – 20 cm long and 1.5 – 10 cm broad. Like all asteraceae, the flowers are a composite inflorescence, with purple (rarely yellow or white) florets arranged in a prominent, somewhat cone-shaped head — "cone-shaped" because the petals of the outer ray florets tend to point downward (are reflexed) once the flower head opens, thus forming a cone.