Epithelantha micromeris var. greggii (Engelm.) Borg

 

Epithelantha micromeris subsp. greggii

이 학명으로는 국표에 없다.

학명 epithelantha micromeris pohlsepia과의 구분은 어렵다.

국표에는 epithelantha속은

아래

재배식물

정명

Epithelantha micromeris (Engelm.) F.A.C. Weber ex Britton & Rose

월세계선인장

2011/12/08

한 종이다.

Origin and Habitat: Northern Mexico, especially around Saltillo, Coahuila.
Altitude range: Around: 700-1300 m above sea level.
Habitat and ecology: Epithelantha greggii grows on hills with low slopes,
mountain plateaus, on coarse stone chips and gravels.
Associated species: Echinocactus horizonthalonius, Ariocarpus retusus, Ariocarpus fissuratus subsp. fissuratus, Coryphantha poselgeriana, Coryphantha pseudoechinus, Coryphantha poselgeriana, Coryphantha delaetiana, Coryphantha gladiispina, Grussonia bradtiana, Escobaria strombiliformis, Escobaria strombiliformis, Lophophora williamsii, Thelocactus bicolor, Echinomastus mariposensis, Mammillaria lasiacantha, Opuntia microdasys, Neolloydia conoidea, Mammillaria pottsii etc...

Synonyms:

• Cactus micromeris var. greggii (Engelm.) J.M.Coult.
• Cephalomamillaria greggii var. greggii (Engelm.) Frič
• Cephalomamillaria micromeris var. greggii cv. Gray Herb. CardCat., Issue 114 (Engelm.) Frič
• Epithelantha greggii (Engelm.) Orcutt
• Epithelantha micromeris var. greggii (Engelm.) Y.Itô
• Mammillaria greggii (Engelm.) Saff.
• Mammillaria micromeris var. greggii Engelm.

Common Names include:
ENGLISH: Button Cactus
SPANISH (Español): Mulatto (Mexico), Tapone (Mexico)

Description: Epithelantha micromeris subs. greggii is the largest and most common of the Epithelantha micromeris subspecies that appears ashy grey and relatively rough, somewhat bristly in general aspect.
Stem: Branching, mostly spheric or obovoidal, often flat-topped with a depressed centre, 5-7,5 cm in diameter; surface completely obscured by spines.
Tubercles: Numerous, not confluent into ribs, hemispheric or short cylindric, very small, ca. 1-2 mm; arranged in tight spirals around the plant.
Areoles: Small at tips of tubercles, 1 mm long, nearly circular, elliptic when distended by flower or fruit, slightly woolly when young, copiously woolly only at sexually mature stem apex; areolar glands absent.
Spines: 20 or more chalky white, ashy grey to reddish brown, 3-5 mm long, spreading and radiating at an early age rather than pectinate and appressed on sides of stems, straight, terete, slender, innocuous. The upper ones much longer.
Roots: Diffuse (usually).
Flower: Inconspicuous, funnel-shaped, diurnal, deeper pink than the type, borne at adaxial margins of spine clusters in the plant top. only partly opened just distal portion visible, as they barely stick out above the wool obscured by longer spines at stem apex.

 

Blooming season: Flowers in May-June.
Fruits: Indehiscent, bright red, thin narrowly cylindric, 18 × 2-3(-5) mm, weakly succulent, soon drying and papery, smooth, spineless; pulp absent; floral remnant deciduous. Fruiting summer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Epithelantha micromeris var. greggii (llifle.com)