Mammillaria viridiflora

(Britton & Rose) Boedeker

Mamm.-vergl.-Schlüssel, 36. 1933.

Common names: Green flower nipple cactus
Endemic
Basionym: Neomammillaria viridiflora Britton & Rose Cact. 4: 153. 1923
Synonyms: Mammillaria orestera L. D. Benson
Treatment appears in FNA Volume 4. Treatment on page 251. Mentioned on page 98, 248, 250.

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.


Phenology: Flowering spring; fruiting fall.
Habitat: Semidesert grasslands, interior chaparral, pinyon-juniper and oak woodlands, crevices, boulders, canyon sides and gravelly igneous substrates
Elevation: (800-)1400-2000 m

Discussion

Mammillaria viridiflora is closely related to M. barbata Engelmann of Mexico, which has priority if the species are combined.

Selected References

None.

Lower Taxa

None.
... more about "Mammillaria viridiflora"
cushionlike +
needlelike +  and bristlelike +
circular to linear +
2.5 cm25 mm <br />0.025 m <br /> (3.1 cm31 mm <br />0.031 m <br />) +
deciduous +  and persistent +
0.2 cm2 mm <br />0.002 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
plumose +  and hairlike +
0.001 cm0.01 mm <br />1.0e-5 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Allan D. Zimmerman +  and Bruce D. Parfitt +
(Britton & Rose) Boedeker +
hardened +
Neomammillaria viridiflora +
triangular +
2 cm20 mm <br />0.02 m <br /> (3.1 cm31 mm <br />0.031 m <br />) +
curved +  and straight +
10mm +  and 20mm +
projecting +  and porrect +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
proliferating +
flattened +  and cylindric +
Green flower nipple cactus +
mucilaginous +
Ariz. +  and N.Mex. +
(800-)1400-2000 m +
not separating +
3.5 cm35 mm <br />0.035 m <br /> (3.9 cm39 mm <br />0.039 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4.2 cm42 mm <br />0.042 m <br />) +
unconnected +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (15 cm150 mm <br />0.15 m <br />) +
1.8cm;3cm +
1.6 cm16 mm <br />0.016 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
purple;green +
indehiscent +
persistent +, long +  and deciduous +
10mm;16mm +
obovoid +  and ovoid +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Semidesert grasslands, interior chaparral, pinyon-juniper and oak woodlands, crevices, boulders, canyon sides and gravelly igneous substrates +
1.7 cm17 mm <br />0.017 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1.5mm;8.5mm +
conspicuously narrower +
deciduous +  and persistent +
rudimentary +
flat +  and terete +
nearly +  and microscopic +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
tuberculate +
fluted;spheric;depressed-spheric or club-shaped +
deciduous +  and persistent +
Flowering spring +  and fruiting fall. +
bowl--shaped +
mucilaginous +
ridgelike +  and nipple--shaped +
Mamm.-vergl.-Schlüssel, +
bristly +  and woolly +
3;2;2;30 +
triangular +
arillate +  and strophiolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (?) +
obovoid;pyriform;obovoid;pyriform;lenticular-reniform;comma--shaped;spheric +
0.9 cm9 mm <br />0.009 m <br /> (?) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
brown-and-white +  and white +
straight +  and curved +
deciduous +  and persistent +
15 (?) +  and 23 (?) +
annulate-ridged +, hairlike +, daggerlike +, subulate +  and acicular +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
hard +  and rigid +
decurrent +
unsegmented +
12 cm120 mm <br />0.12 m <br /> (20 cm200 mm <br />0.2 m <br />) +
purplish +, green +  and gray-green +
1cm;15cm +
cylindric +, spheric +  and flat-topped +
1.8cm;12cm +
yellow-green +  and green +
tuberculate +
Mammillaria orestera +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Mammillaria viridiflora +
Mammillaria +
species +
flat +  and concave +
dull +  and glossy +
not confluent +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
3mm +  and 25mm +
cylindric +, conic +  and pyramidal +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2mm +  and 9mm +
fibrous +  and succulent +
straight +
sinuate +
epiphytic;epiphytic;epiphytic +
barrel-shaped +  and spheric +