Pediocactus winkleri

K. D. Heil

Cact. Succ. J. (Los An geles) 51: 28, figs. 5–8. 1979.

Common names: Winkler’s pincushion cactus Winkler’s footcactus
IllustratedEndemicConservation concern
Synonyms: Pediocactella bradyi subsp. winkleri (K. D. Heil) Doweld Pediocactus bradyi subsp. winkleri (K. D. Heil) Hochstätter Pediocactus bradyi var. winkleri (K. D. Heil) Hochstätter
Treatment appears in FNA Volume 4. Treatment on page 215. Mentioned on page 212, 214.

Plants usually unbranched, sometimes clumped. Stems subglobose to obovoid, 3.9–6.8 × 2.7–5 cm; areoles elliptic to circular, lanate (rarely glabrate). Spines smooth, relatively hard, all radial, 8–14 per areole, spreading downward, white or whitish to tan, 1.5–4 mm. Flowers 1.7–2.2 × 1.7–3 cm; scales and outer tepals minutely toothed or entire and undulate; outer tepals peach to pink with reddish-brown midstripes, 10–15 × 4–6 mm; inner tepals peach or pink, oblanceolate, 12–16 × 3–5 mm. Fruits green, drying reddish-brown, without scales, turbinate, 7–10 × 8–11 mm. Seeds black, to 3 × 2 mm, shiny, papillate and rugose.


Phenology: Flowering early spring.
Habitat: Great Basin desert scrub, pinyon-juniper woodlands, desert pavements of cobble, pebble, or fossil oyster shell and gypsum soils
Elevation: 1500-2100 m

Discussion

Of conservation concern.

Pediocactus winkleri (and P. despainii) were recently combined with P. bradyi. Analyses of chloroplast DNA sequences (J. M. Porter et al. unpubl.), however, provide strong evidence of a close relationship among P. winkleri, P. despainii, and P. simpsonii, not P. bradyi. By contrast, P. bradyi is more closely related to P. sileri and P. peeblesianus. The morphologic distinction between P. winkleri and P. despainii is much more tenuous than the key and descriptions indicate (see comments under 9. P. despainii).

Pediocactus winkleri is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Pediocactus winkleri"
cushionlike +
elliptic +  and circular +
deciduous +  and persistent +
elliptic +, pyriform +, oval +  and circular +
Kenneth D. Heil +  and J. Mark Porter +
K. D. Heil +
hardened +
triangular +
curved +  and straight +
terete +  and flat +
proliferating +
flattened +  and cylindric +
Winkler’s pincushion cactus +  and Winkler’s footcactus +
mucilaginous +
1500-2100 m +
not separating +
1.7 cm17 mm <br />0.017 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 />) +
1.7cm;3cm +
reddish-brown;green +
persistent +, long +  and deciduous +
7mm;10mm +
turbinate +
dry +, fleshy +  and juicy +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Great Basin desert scrub, pinyon-juniper woodlands, desert pavements of cobble, pebble, or fossil oyster shell and gypsum soils +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
oblanceolate +
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 +
reddish-brown +
1 cm10 mm <br />0.01 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 An geles) +
greenish +  and white +
3;2;2;30 +
undulate +, entire +  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 /> (0.3 cm3 mm <br />0.003 m <br />) +
rugose +  and papillate +
pyriform;obovoid +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Illustrated +, Endemic +  and Conservation concern +
whitish +  and tan +
curved +  and straight +
deciduous +  and persistent +
6mm +  and 30mm +
downward +  and spreading +
finely puberulent +  and glabrous +
8 (?) +  and 14 (?) +
pectinate +, awl-shaped +  and hairlike +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 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 +
3.9cm;6.8cm +
subglobose +  and obovoid +
succulent +
2.7cm;5cm +
yellow +  and green +
tuberculate +
Pediocactella bradyi subsp. winkleri +, Pediocactus bradyi subsp. winkleri +  and Pediocactus bradyi var. winkleri +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Pediocactus winkleri +
Pediocactus +
species +
dull +  and glossy +
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 +