Pediocactus bradyi

L. D. Benson

Cact. Succ. J. (Los Angeles) 34: 19, figs. 13, 14. 1962.

Common names: Marble Canyon cactus Brady’s hedgehog cactus
EndemicConservation concern
Synonyms: Pediocactella bradyi (L. D. Benson) Doweld Pediocactus simpsonii subsp. bradyi (L. D. Benson) Halda Toumeya bradyi (L. D. Benson) W. Earle
Treatment appears in FNA Volume 4. Mentioned on page 213.

Plants usually unbranched (rarely 2–12-branched). Stems subglobose to obovoid, 3.2–6.2 × 2.5–5 cm; areoles elliptic, lanulose. Spines smooth, relatively hard, spreading to recurved, somewhat pectinate, usually all radial (rarely with central spines); radial spines (7–) 13–16 (–18) per areole, tips bending downward, yellowish tan or white, 3–5 × 0.7 mm; central spines 0 (–2) per areole, dark tan, rigid, straight or slightly curved, 3–4 mm. Flowers 1.5–2.2 × 1.5–3 cm; scales and outer tepals minutely toothed or denticulate or entire and undulate; outer tepals straw yellow with green or redbrown midstripes, 3–15 × 3–4.5 mm; inner tepals straw colored, 9–15 × 3–4.5 mm. Fruits green turning reddish-brown, turbinate, 7–10 × 10 mm. Seeds brownish black, to 2.7 × 1.7–2 mm, papillate and rugose.


Phenology: Flowering early spring.
Habitat: Great Basin desert scrub, clay soils of ledges often overlain with limestone gravel
Elevation: 1000-1200 m

Discussion

Of conservation concern.

Some authors have included Pediocactus winkleri and P. despainii as infraspecific taxa of P. bradyi. Chloroplast DNA sequence data strongly indicate a more distant relationship (see discussion under 8. P. winkleri).

Selected References

None.

Lower Taxa

None.
... more about "Pediocactus bradyi"
cushionlike +
deciduous +  and persistent +
elliptic +, pyriform +, oval +  and circular +
Kenneth D. Heil +  and J. Mark Porter +
L. D. Benson +
hardened +
triangular +
curved +  and straight +
terete +  and flat +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
proliferating +
flattened +  and cylindric +
Marble Canyon cactus +  and Brady’s hedgehog cactus +
mucilaginous +
1000-1200 m +
not separating +
1.5 cm15 mm <br />0.015 m <br /> (2.2 cm22 mm <br />0.022 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 />) +
1.5cm;3cm +
green turning reddish-brown +
persistent +, long +  and deciduous +
7mm;10mm +
turbinate +
dry +, fleshy +  and juicy +
10 cm100 mm <br />0.1 m <br /> (?) +
Great Basin desert scrub, clay soils of ledges often overlain with limestone gravel +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 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 +
entire +  and fimbriate +
redbrown +  and green +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
deciduous +  and persistent +
Flowering early spring. +
mucilaginous +
ridgelike +  and nipple--shaped +
Cact. Succ. J. (Los Angeles) +
greenish +  and white +
3;2;2;30 +
undulate +, entire +, denticulate +  and toothed +
thin +  and broad +
arillate +  and strophiolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0 cm0 mm <br />0 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
rugose +  and papillate +
pyriform;obovoid +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Endemic +  and Conservation concern +
white +, gray +, pink +  and reddish tan +
curved +  and straight +
deciduous +  and persistent +
6mm +  and 30mm +
spreading +  and recurved +
finely puberulent +  and glabrous +
13 (?) +  and 16 (?) +
pectinate +
0.1 cm1 mm <br />0.001 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
decurrent +
unsegmented +
gray-green +  and green +
3.2cm;6.2cm +
subglobose +  and obovoid +
succulent +
2.5cm;5cm +
yellow +  and green +
tuberculate +
Pediocactella bradyi +, Pediocactus simpsonii subsp. bradyi +  and Toumeya bradyi +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Pediocactus bradyi +
Pediocactus +
species +
dull +  and glossy +
white +  and yellowish tan +
3mm +  and 5mm +
downward +  and bending +
0.7 cm7 mm <br />0.007 m <br /> (?) +
not confluent +
mammillate +, cylindroid +, truncate-conic +, conic +  and pyramidal +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
epiphytic;epiphytic;epiphytic +
hanging +  and erect to prostrate +
barrel-shaped +  and spheric +