Coryphantha hesteri

Y. Wright

Cact. Succ. J. (Los Angeles) 4: 274, fig. (p. 273). 1932.

Common names: Hes ter’s pincushion cactus Hester’s foxtail cactus
EndemicConservation concern
Synonyms: Escobaria hesteri (Y. Wright) Buxbaum
Treatment appears in FNA Volume 4. Treatment on page 233. Mentioned on page 223, 231.

Plants unbranched, except in old age, ultimately forming dense clumps, 5–20 (–30) cm diam., stem not obscured by spines when hydrated, obscured when desiccated. Roots short, fleshy, enlarged taproots, basally ± 1/3–1/2 of stem diam. Stems deep-seated, aerial parts inconspicuous, flat-topped to hemispheric (to ovoid or spheric in horticulture), almost completely withdrawing into substrate when desiccated, (2.4–) 5–9 × 1.5–4.7 cm, aboveground portion 1–6.5 (–9); tubercles 5–9 (–12) × 4–6 (–7) mm; areolar glands absent; parenchyma not mucilaginous; druses present, largest druses lenticular, 0.3–0.5 mm diam.; pith 1/5–1/3 of lesser stem diam.; medullary vascular system not recorded. Spines (12–) 15–20 (–25) per areole, white with brown tips (quickly weathering to gray) or the adaxial spines per areole dark gray-brown throughout; all radial spines or 1–3 adaxial spines sometimes interpreted as central, laterally compressed at base, 6–13 × (0.1–) 0.2–0.3 mm; subcentral spines 0 (–3) per areole; central spines 0 (–3) per areole, appressed, straight, ± equal, 9.5–13 (–15) × 0.2–0.3 mm. Flowers nearly apical, 18–25 × 20–34 mm; outer tepals fringed; inner tepals 22–27 per flower, bright-rose-pink or magenta, proximally paler, 10–17 × 2–4 mm; outer filaments colorless or white to rose; anthers orange-yellow; stigma lobes (4–) 5–6 (–7), white, cream, or pale-pink, 1–3 mm. Fruits green, spheric or obovoid, (3.5–) 5–8 (–10) × 3–6 mm, quickly drying; floral remnant usually persistent. Seeds dark-brown, spheric, 0.9–1.1 (–1.2) mm, pitted. 2n = 22.


Phenology: Flowering Apr–Jun(-Nov); fruiting Aug–Oct(-Jan).
Habitat: Semidesert grasslands, oak-juniper-pinyon woodlands, rock crevices, rocky soils, sandstone, limestone, igneous substrates, novaculite
Elevation: 1200-1600 m

Discussion

Of conservation concern.

Coryphantha hesteri resembles C. vivipara but is much smaller in all parts. Coryphantha hesteri is characteristic of the dwarf cacti on novaculite outcrops but is not limited to that substrate.

Selected References

None.

Lower Taxa

None.
... more about "Coryphantha hesteri"
orange-yellow +
cushionlike +
circular to linear +
dark gray-brown +
deciduous +  and persistent +
connected +
hourglass--shaped +
Allan D. Zimmerman +  and Bruce D. Parfitt +
Y. Wright +
spineless +  and naked +
hardened +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 1.3 cm13 mm <br />0.013 m <br /> (?) +
0.2mm;0.3mm +
Mammillaria subg. Coryphantha +
triangular +
1.3 cm13 mm <br />0.013 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
9.5mm +  and 13mm +
0.4 cm4 mm <br />0.004 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
proliferating +
flattened +  and cylindric +
Hes ter’s pincushion cactus +  and Hester’s foxtail cactus +
with mucilage +  and mucilaginous +
1200-1600 m +
not separating +
1.8 cm18 mm <br />0.018 m <br /> (2.5 cm25 mm <br />0.025 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 />) +
20mm;34mm +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
indehiscent +
persistent +, long +  and deciduous +
obovoid +  and spheric +
fleshy +  and juicy +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Semidesert grasslands, oak-juniper-pinyon woodlands, rock crevices, rocky soils, sandstone, limestone, igneous substrates, novaculite +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 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 rose +
not mucilaginous +
inconspicuous +
deciduous +  and persistent +
Flowering Apr–Jun(-Nov) +  and fruiting Aug–Oct(-Jan). +
mucilaginous +
1/5 +  and 1/3 +
aboveground +
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 +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
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 +
spheric +
Endemic +  and Conservation concern +
adventitious +
radial +  and cluster +
curved +  and straight +
deciduous +  and persistent +
1 (?) +  and 3 (?) +
annulate-ridged +, hairlike +, daggerlike +, subulate +  and acicular +
hard +  and rigid +
differentiated +
decurrent +
unsegmented +
1cm;20cm +
deep-seated +
not obscured +
tuberculate +
flat-topped +, cylindric +, ovoid +, spheric +  and hemispheric +
succulent +
1cm;15cm +
pale-pink +, cream +  and white +
protruding +  and flat +
large +  and small +
2.4 cm24 mm <br />0.024 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
tuberculate +
Escobaria hesteri +
adventitious +
1/3 +  and 1/2 +
tuberlike +
epipetric +  and epiphytic +
Coryphantha hesteri +
Coryphantha +
species +
dull +  and glossy +
pitted +  and raised-reticulate +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
5mm +  and 9mm +
conic +  and hemispheric or cylindric +
4mm +  and 6mm +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
epiphytic;epiphytic;epiphytic +