Cerastium tomentosum

From Wikipedia, the free encyclopedia

Cerastium tomentosum
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Core eudicots
Order:	Caryophyllales
Family:	Caryophyllaceae
Genus:	Cerastium
Species:	C. tomentosum
Binomial name
Cerastium tomentosum L.

Flower close-up

Cerastium tomentosum (Snow-in-Summer) is a herbaceous flowering plant and a member of the carnation family. It is generally distinguished from other species of its genus by "tomentose" or felty foliage. It is a low, spreading perennial native to alpine regions of Europe. The stems & leaves are silvery-grey, whilst the flowers are star-like, white & about 15mm across. Not surprisingly, C. tomentosum flowers in summer, but may also bloom at other times of the year. It has proven popular as a cultivated ornamental and can be found in gardens the world over.

Centranthe rouge

Le centranthe rouge (Centranthus ruber), appelé aussi lilas d'Espagne ou valériane rouge, est une plante herbacée vivace de la famille des Valérianacées (famille aujourd'hui parfois agrégée aux Caprifoliacées).

Sommaire

  [masquer] 

• 1Étymologie
• 2Description
• 3Écologie
• 4Caractéristiques
• 5Usages
• 6Notes et références
• 7Liens externes
  

Centaurea

Centaurea (/ˌsɛntɔːˈriːə/)^[1] is a genus of between 350 and 600 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names for this genus are centaury, centory, starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads" (Common Knapweed). The Plectocephalus group – possibly a distinct genus – is known as basketflowers. "Cornflowers" is used for a few species, but that term more often specifically means C. cyanus (sometimes also called "Basket Flower"). The common name "centaury" is sometimes used, although this also refers to the unrelated plant genusCentaurium.^[2]

Contents

  [hide] 

• 1Description and ecology
• 2Use by humans
• 3Systematics and taxonomy
  • 3.1Synonyms
  • 3.2Selected species
  • 3.3Formerly placed here
• 4External links
• 5Footnotes
• 6References
• 7Further reading

Celosia

Celosia /siːˈloʊʃiə/^[2] is a small genus of edible and ornamental plants in the amaranth family, Amaranthaceae. The generic name is derived from the Greek word κήλεος (keleos), meaning "burned," and refers to the flame-likeflower heads. Species are commonly known as woolflowers, or, if the flower heads are crested by fasciation, cockscombs. The plants are well known in East Africa’s highlands and are used under their Swahili name, mfungu.

Contents

  [hide] 

• 1Uses
  • 1.1As a garden plant
  • 1.2As food
• 2Cultivation
• 3Selected species
  • 3.1Formerly placed here
• 4Images
• 5References

Catharanthus

Catharanthus is a genus of flowering plants in the dogbane family, Apocynaceae. Like genus Vinca, they are known commonly as periwinkles.^[3] There are eight known species. Seven are endemic to Madagascar,^[4] though one, C. roseus, is widely naturalized around the world.^[2][5] The eighth species, C. pusillus, is native to India and Sri Lanka.^[6] The name Catharanthus comes from the Greek for "pure flower".^[7]

These are perennial herbs with oppositely or almost oppositely arranged leaves. Flowers are usually solitary in the leaf axils. Each has a calyx with five long, narrow lobes and a corolla with a tubular throat and five lobes.^[7]

Catharanthus roseus, known formerly as Vinca rosea, is a main source of vinca alkaloids, now sometimes called catharanthus alkaloids. The plant produces about 130 of these compounds, including vinblastine and vincristine, two drugs used to treat cancer.^[8]

Catharanthus roseus is also cultivated as an ornamental plant in gardens. Several cultivars have been bred to produce flowers in many shades of pink, red, lilac, and white, or in light shades with dark throats.^[9]

Species^[2]

1. Catharanthus coriaceus Markgr. - Madagascar
2. Catharanthus lanceus (Bojer ex A.DC.) Pichon - Madagascar
3. Catharanthus longifolius (Pichon) Pichon - Madagascar
4. Catharanthus ovalis Markgr. - Madagascar
5. Catharanthus pusillus (Murray) G.Don. - India, Sri Lanka, Western Himalayas
6. Catharanthus roseus (L.) G.Don. – Madagascar periwinkle, old-maid, rosy periwinkle, pink periwinkle - Madagascar; naturalized in Italy, S Asia, Australia, S United States, Central America, and various oceanic islands
7. Catharanthus scitulus (Pichon) Pichon - Madagascar
8. Catharanthus trichophyllus (Baker) Pichon - Madagascar

References[edit]

مين فكر حلقة (10) - الطباعة ثلاثية الابعاد

أحدث الطابعات ثلاثية الأبعاد