Mammillaria viridiflora (Britt. & Rose) Bödecker (redirected from: Mammillaria orestera)
Family: Cactaceae
fishhook pincushion,  more...
[Mammillaria orestera L. Benson]
Mammillaria viridiflora image
Ries Lindley  
Plants usually unbranched. Roots: upper portion of primary root somewhat thickened and succulent proximally, otherwise fibrous. Stems flat-topped or spheric to short cylindric, ± flaccid; tubercles (5-)6-15(-17) mm; axils appearing naked; cortex and pith mucilaginous; latex absent. Spines 19-31(-34) per areole, usually white or brown-and-white (rarely bright reddish brown), glabrous (to hoary); radial spines (13-)15-23(-31) per areole, in 1 series, bristlelike, stiff; central spines 1-2(-4) per areole, porrect or strongly projecting, all hooked, (7.5-)10-20(-31) × 0.2-0.4 mm; subcentral spines 0 [several in M. barbata]. Flowers (1.5-)2-3.5(-3.9) × (1.2-)1.8-3(-4.2) cm; outermost tepal margins long fringed, reaching 1 mm; inner tepals usually white, cream, pale tan, greenish white, or pale rose-pink, sometimes appearing pale orange proximally due to reflection of yellow anthers, usually with ± sharply defined pink midstripes (often suffused with brown, yellow, pink, red, purple, or green, darkest and brightest distally on most plants), (7.5-)12-17(-21) mm; stigma lobes green or yellow-green. Fruits green or purple, ovoid or obovoid, (6-)10-16(-22) × (4-)6-12(-13) mm, juicy throughout; floral remnant persistent. Seeds chocolate brown with darker reticulation, 1.3 × 0.9 mm, pitted; testa hard; anticlinal cell walls straight; interstices conspicuously narrower than pit diameters; pits bowl-shaped. 2n = 22. Flowering spring; fruiting fall. Semidesert grasslands, interior chaparral, pinyon-juniper and oak woodlands, crevices, boulders, canyon sides and gravelly igneous substrates; (800-)1400-2000 m; Ariz., N.Mex. Mammillaria viridiflora is closely related to M. barbata Engelmann of Mexico, which has priority if the species are combined.

Mammillaria viridiflora image
Ries Lindley  
Mammillaria viridiflora image
Ries Lindley  
Mammillaria viridiflora image
Liz Makings  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069