Английская Википедия:Astrophytum

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Шаблон:Short description Шаблон:Distinguish Шаблон:Automatic taxobox

Astrophytum is a genus of six species of cacti, native to North America.[1]

These species are sometimes referred to as living rocks, though the term is also used for other genera, particularly Lithops (Aizoaceae). The generic name is derived from the Greek words άστρον (astron), meaning "star," and φυτόν (phyton), meaning "plant."

Description

The species of the genus Astrophytum usually grow individually with spherical to columnar green shoots and reach heights of up to 1.5 meters. The shoots are often densely covered with fine white tufts of hair, but sometimes they are completely bald. There are four to ten (rarely three) very noticeable ribs that are not divided into cusps. The large areoles stand close together, but do not merge. The spike is variable. Spines may be present or may be missing entirely.

The funnel-shaped, large flowers are yellow or yellow with a red throat. They appear at the top of the shoots and open during the day. The pericarpel is covered with pointed scales. The cap-shaped seeds have a diameter of up to 2.5 millimeters with a brownish black seed coat which is almost smooth. The edge is rolled towards the sunken hilum.

Species

Image Hi Common Name Distribution
Файл:Astrophytum asterias 30.JPG Astrophytum asterias (Zucc.) Lem. Sand dollar cactus, sea urchin cactus, star peyote small parts of Texas in the United States and Mexico.
Файл:Astrophytum capricorne 5.JPG Astrophytum capricorne (A.Dietr.) Britton & Rose Goat's horn cactus Coahuila regions of Northern Mexico.
Файл:Astrophytum caput-medusae.jpg Astrophytum caput-medusae D.R.Hunt Nuevo León, Mexico
Файл:Bischofsmütze (Astrophytum coahuilense) (5650576819).jpg Astrophytum coahuilense (H.Moeller) Kanfer Coahuila and Durango, Mexico
Файл:Astrophytum myriostigma first flower.jpg Astrophytum myriostigma Lem. Bishop's cap cactus, bishop's hat, bishop's mitre cactus northeastern and central Mexico.
Файл:Astrophytum ornatum 001.JPG Astrophytum ornatum (DC.) Britton & Rose – Monk's hood[1] bishop's cap or monk's hood cactus Central Plateau of Mexico.
Файл:Astrophytum mix seedlings.jpg
Seedlings of Astrophytum spp.
Файл:Astrophytum caput-medusae-IMG 3597.JPG
A ripe fruit of A. caput-medusae with seeds and testa showing

Synonymy

The genus has several synonyms:

  • Astrophyton Lawr., orth. var.
  • Digitostigma Velazco & Nevárez
  • Maierocactus E.C.Rost[2]

There are a number of species synonyms sometimes seen:

Name Synonym of
Astrophytum columnare Astrophytum myriostigma
Astrophytum crassispinoides Astrophytum capricorne var. crassispinoides
Astrophytum glabrescens Astrophytum ornatum
Astrophytum niveum Astrophytum capricorne var. niveum
Astrophytum nuda Astrophytum myriostigma var. nudum
Astrophytum prismaticum Astrophytum myriostigma
Astrophytum senile Astrophytum capricorne
Astrophytum tulense Astrophytum myriostigma

References

Шаблон:Reflist

External links

Шаблон:Taxonbar

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  1. ↑ 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок GRINSpecies не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок GRIN не указан текст
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