Mammillaria densispina (J.M.Coult.) Orcutt

국표에 없다.

• Mammillaria densispina (J.M.Coult.) Orcutt
• • Cactus densispinus J.M.Coult.
  • Krainzia densispina (J.M.Coult.) Doweld
  • Leptocladia densispina (J.M.Coult.) Buxb.
  • Neomammillaria densispina (J.M.Coult.) Britton & Rose

Description: Mammillaria densispinaSN|28215]]SN|20899]] is a tiny solitary cactus particularly priced by Mammillaria enthusiast. Its body is densely covered by translucent pale-yellow or amber-brown spines and produces small yellowish flowers in spring. It is vaguely similar in general shape to Mammillaria rhodanthaSN|14510]]SN|14510]], but does not divide itself dichotomously. The taxonomic relationship between this species and Mammillaria microheliaSN|20899]]SN|28215]] needs further investigation.
Habit: Slow-growing, spherical, perennial succulent, usually solitary.
Stem: Globose to short cylindrical, dark green up to 6(-10) cm in diameter and 12 cm tall, entirely hidden by the dense covering of spines.
Tubercles: firm to flabby, conical, short and thick, green, not milky. Axils without bristles,
woolly at first, later naked.
Radial spines: 20-25 or more, glassy white, pale yellow or pale brownish, unequal, rigid, slender, needle-like, slightly spreading, about 1 cm long.
Central spines: 5 or 6, straight, rigid, longer than the radials, bulbous at the base, 10-12(-15) mm long, fuchsine red when new, passing to yellow. Often the upper half or third dark brown.
Flowers: Funnelform, yellow, orangish or purplish without, pale-yellow within, 15-20 long.
Fruits: Elongated, greenish pink or creamy coloured.
Seeds: Obovate, reddish brown, 1 mm in diameter.

Mammillaria densispina (llifle.com)