Cylindropuntia bigelovii |
Cylindropuntia ×kelvinensis |
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teddy-bear cholla |
kelvin pricklypear |
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Habit | Trees 1.5–2 m; trunk commonly branched; crown open to compact usually bearing whorled branches. | |
Stem | segments often easily dislodged, if terminal, green or purple, 5–13 × 1.8–3 cm; tubercles prominent, broadly oval, 0.7–1.2(–1.5) cm; areoles obdeltate to rhombic, 4.5–6 × 3–5 mm; wool yellow, aging gray to black. |
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Spines | 0–8(–13) per areole, sometimes with 1–3 bristlelike spines along areole margins at most areoles, usually slightly interlacing with spines of adjacent areoles, yellowish to tan, sometimes with pinkish hue, to red-brown and partially gray coated, aging brown-gray to gray; major abaxial spines angular-flattened, usually reflexed, the longest to 30 mm; major adaxial spines subterete, erect-divergent, the longest to 18 mm; sheaths uniformly whitish or tipped yellow to gold, slightly baggy. |
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Glochids | in inconspicuous adaxial crescent, yellow, to 1 mm. |
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Flowers | inner tepals rose to magenta, spatulate, 18–25(–30) mm, emarginate-apiculate; filaments deep rose; anthers yellow; style white, tinged red-purple distally; stigma lobes white with hint of green. |
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Fruits | usually sterile, sometimes forming short chains, yellow-green to yellow, sometimes purplish, 25–45 × 15–22 mm, fleshy, tuberculate, spineless; tubercles progressively longer toward fruit apex; umbilicus 4–7 mm deep; areoles 32–44. |
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Seeds | pale yellow, orbicular to angular or squarish in outline, flattened to warped, 3.5–4 × 3–4 mm, sides with 0–2 large depressions; hilum sometimes pointed; girdle smooth. |
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2n | = 22, 33. |
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Cylindropuntia bigelovii |
Cylindropuntia ×kelvinensis |
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Phenology | Flowering spring (Apr–Jun). | |
Habitat | Sonoran desert scrub, edges of grasslands, rocky flats and slopes, rolling hills | |
Elevation | 500-1000 m (1600-3300 ft) | |
Distribution |
AZ; CA; NV; nw Mexico
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AZ |
Discussion | Varieties 2 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 4, p. 109. | FNA vol. 4, p. 108. |
Parent taxa | Cactaceae > subfam. Opuntioideae > Cylindropuntia | Cactaceae > subfam. Opuntioideae > Cylindropuntia |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Opuntia bigelovii | Opuntia kelvinensis |
Name authority | (Engelmann) F. M. Knuth: in C. Backeberg and F. M. Knuth, Kaktus-ABC, 125. (1935) | (V. E. Grant & K. A. Grant) P. V. Heath: Calyx 4: 142. (1994) |
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