Coryphantha ramillosa

Cutak

Cact. Succ. J. (Los Angeles) 14: 164, fig. 96. 1942.

Conservation concern
Treatment appears in FNA Volume 4. Treatment on page 225. Mentioned on page 221, 222.

Plants unbranched (rarely to 25 branches), loosely bristly or shaggy, with gray, brown, or whitish general aspect. Roots diffuse or strong taproots 1/5 of stem diam. Stems deep-seated, aerial portion usually hemispheric or ± flat-topped, 0–9 × 4–9.5 cm; tubercles 8–20 × 6–9 mm, firm; areolar glands seasonally conspicuous; parenchyma not mucilaginous; pith 1/2 of lesser stem diam.; medullary vascular system conspicuous. Spines 14–27 per areole, largest spinesterete, adaxial spines (both radial and subcentral) ± elongate, often twisted, flattened to angled; radial spines (9–) 13–16 (–20) per areole, white, 12–30 × 0.2–0.3 mm; subcentral spines often present, few per areole; outer central spines (2–) 3 (–5) per areole, either projecting conspicuously or erect and spreading in same plane as the radial spines, dull white to dark gray or reddish-brown to dark-brown, usually with dark-brown to purplish black tips; inner central spine 1 per areole, ± porrect, straight or the largest spinesslightly curved, 22–43 × 0.5–0.7 mm. Flowers apical or nearly so, 38–65 × 30–50 mm; outer tepals entire; inner tepals pale-pink to deep rose-purple, grading to white proximally, with darker midstripes, at least near tip, 17–25 × 3–4.5 mm; outer filaments white; anthers bright-yellow to pale orange; stigma lobes 6–7, white, 3.5–7 mm. Fruits dark green to pale gray-green, obovoid, spheric, or ellipsoid, (10–) 16–21 (–25) × (10–) 12–16 mm, succulent; floral remnant strongly persistent. Seeds yellow, drying to reddish-brown, spheric to comma-shaped, keeled proximally, strophiole replaced by a linear raphe, 1–1.5 mm, finely and weakly raised-reticulate. 2n = 22.


Phenology: Flowering summer–early fall (Aug–Nov); fruiting Nov.
Habitat: Chihuahuan desert scrub, limestone hills, ridges, benches
Elevation: 400-1000 m

Discussion

Of conservation concern.

Coryphantha ramillosa is perhaps only a geographic race of the yellow-flowered C. delaetiana of northern Mexico. Coryphantha ramillosa differs from C. macromeris by several features: individual stems are more compact and rarely branched; areolar grooves (after sexual maturation) extend the full lengths of the tubercles; parenchyma is not slimy; and the pith is large and vascularized. The flowers are similar except for the long fringes on outer tepal margins of C. macromeris (entire in C. ramillosa and allied species).

Coryphantha ramillosa is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Coryphantha ramillosa"
bright-yellow +  and pale orange +
cushionlike +
circular to linear +
deciduous +  and persistent +
connected +
hourglass--shaped +
whitish +, brown +  and gray +
Allan D. Zimmerman +  and Bruce D. Parfitt +
spineless +  and naked +
hardened +
Mammillaria subg. Coryphantha +
triangular +
curved +  and straight +
0.4 cm4 mm <br />0.004 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
proliferating +
flattened +  and cylindric +
with mucilage +  and mucilaginous +
Tex. +  and Mexico (Coahuila) +
400-1000 m +
not separating +
3.8 cm38 mm <br />0.038 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
nearly +  and apical +
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 />) +
30mm;50mm +
2.1 cm21 mm <br />0.021 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
dark green;pale gray-green +
indehiscent +
persistent +, long +  and deciduous +
16mm;21mm +
ellipsoid +, spheric +  and obovoid +
succulent +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Chihuahuan desert scrub, limestone hills, ridges, benches +
curved +  and straight +
2.2 cm22 mm <br />0.022 m <br /> (4.3 cm43 mm <br />0.043 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
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 +
fringed +  and toothed +
small +
white +  and dark gray or reddish-brown +
spreading +, erect +  and projecting +
not mucilaginous +
deciduous +  and persistent +
Flowering summer–early fall (Aug–Nov) +  and fruiting Nov. +
mucilaginous +
0 cm0 mm <br />0 m <br /> (9 cm90 mm <br />0.09 m <br />) +
4 cm40 mm <br />0.04 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
ridgelike +  and nipple--shaped +
Cact. Succ. J. (Los Angeles) +
colorless +  and white greenish or pinkish +
3;2;2;30 +
erose +  and entire +
rudimentary +
triangular +
arillate +  and strophiolate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
glossy +  and shiny +
keeled;spheric;comma-shaped +
Conservation concern +
adventitious +
curved +  and straight +
deciduous +  and persistent +
12mm +  and 30mm +
13 (?) +  and 16 (?) +
annulate-ridged +, hairlike +, daggerlike +, subulate +  and acicular +
hard +  and rigid +
differentiated +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
decurrent +
unsegmented +
1cm;20cm +
deep-seated +
tuberculate +
flat-topped +, cylindric +, ovoid +, spheric +  and hemispheric +
succulent +
1cm;15cm +
protruding +  and flat +
large +  and small +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
tuberculate +
Aulacothelae +, Cochiseia +, Cumarinia +, Escobaria +, Escobesseya +, Lepidocoryphantha +  and Neobesseya +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Coryphantha ramillosa +
Coryphantha +
species +
dull +  and glossy +
pitted +  and raised-reticulate +
dark-brown +  and purplish black +
8mm +  and 20mm +
conic +  and hemispheric or cylindric +
6mm +  and 9mm +
epiphytic;epiphytic;epiphytic +
shaggy +  and bristly +