Echinocereus enneacanthus |
Echinocereus dasyacanthus |
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alicoche, Mexican strawberry pitaya, pitaya, smallspine pitaya, strawberry cactus |
spiny hedgehog cactus, Texas rainbow cactus |
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Habit | Plants branched forming dense or lax clumps with 20–100(–500) branches, usually branching before flowering. | Plants unbranched or few branched, forming loose clumps of fewer than 20 stiff branches in old age. | ||||
Stems | some-what lax often sprawling, longest stems sometimes prostrate, cylindric, 8–40(–100?) × 3.2–15 cm; ribs (6–)7–10(–12), crests essentially uninterrupted; areoles (11–)14–52 mm apart. |
erect, ovoid, becoming cylindric with age, 11–23(–40) × (4.5–)5.5–7(–10) cm; ribs (13–)15–19(–21), crests rather sharply undulate; areoles 5–11 mm apart. |
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Spines | 6–14 per areole, straight or central spines slightly curved throughout their lengths, ± opaque, white, pale tan, or purplish gray, often extensively tipped or banded with brown; radial spines 5–10(–13) per areole, 9.5–40(–47) mm, usually less than 1/2 as long as central spines; central spines 1–4(–5) per areole, all or mostly projecting, abaxial spine porrect or descending, frequently compressed or angular in cross section (sometimes sulcate, keeled, or striate), (12–)20–84(–96) mm. |
19–28 per areole, straight, appressed (radial spines) or spreading in all directions (central spines), presenting relatively bristly appearance (except when spines very short, and then having relatively smooth appearance as in E. pectinatus), pink to pale yellow, white, or tan, less often dark brown or purplish, annual growth increments marked (often vaguely) by rings of spines with contrasting colors; radial spines (16–)17–25(–28) per areole, 5–15(–25) mm; central spines (2–)8–12(–15) per areole, terete, largest spines 4.5–9.5(–14) mm. |
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Flowers | (4.5–)5–7.5 × 5–5.6(–9) cm; flower tube 10–30 × 10–22(–40) mm; flower tube hairs 1–2 mm; inner tepals pink or magenta, darkest proximally, 28–55 × 8–14(–20) mm, tips relatively thin and delicate; anthers yellow; nectar chamber 4–6 mm. |
7–8.5(–10) × 7–12 cm; flower tube 10–20 × to 10 mm; flower tube hairs 1–3 mm; inner tepals either yellow (rarely orange-yellow, sometimes becoming salmon- or rose-pink with age), or rose-pink to magenta, proximal 5–30% green in either case, (25–)32–69(–77) × 8–23 mm, tips relatively thin and delicate; anthers yellow; nectar chamber 2–6 mm. |
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Fruits | pale yellow-green or dull reddish, 20–30 mm, pulp white or pale pink. |
dark dull purplish to maroon (sometimes remaining green), 2–3.5 cm, pulp white to purplish pink. |
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2n | = 22. |
= 44. |
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Echinocereus enneacanthus |
Echinocereus dasyacanthus |
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Phenology | Flowering Mar–May; fruiting Jun–Aug. | |||||
Habitat | Chihuahuan desert scrub, valleys to rocky canyonsides, limestone | |||||
Elevation | 600-1500 m (2000-4900 ft) | |||||
Distribution |
TX; Mexico
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NM; TX; Mexico (Chihuahua, Coahuila)
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Discussion | Varieties 2 (2 in the flora). The commonly recognized concept of Echinocereus enneacanthus var. enneacanthus (W. O. Moore 1967; D. Weniger 1970; L. D. Benson 1982) pertained to the small eastern var. brevispinus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Flower color of Echinocereus dasyacanthus is spectacularly polymorphic. Unlike E. pectinatus var. wenigeri, however, the inner tepals are never white proximally. No hybrids are known to occur where the tetraploid E. dasyacanthus grows sympatrically with the diploid E. pectinatus, near the Pecos River. The names E. pectinatus var. neomexicanus and var. minor pertain to the hybrids with E. coccineus, E. ×roetteri, including E. ×lloydia. L. D. Benson (1969) misapplied the epithet neomexicanus to E. dasyacanthus. In Big Bend National Park, a few populations with unusually short spines are the basis for erroneous reports of E. pectinatus var. wenigeri, E. pectinatus var. pectinatus, and E. ctenoides (Engelmann) Lemaire. Reports from Arizona were apparently misidentifications of E. pseudopectinatus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 4, p. 162. | FNA vol. 4. | ||||
Parent taxa | Cactaceae > subfam. Cactoideae > Echinocereus | Cactaceae > subfam. Cactoideae > Echinocereus | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | E. pectinatus var. dasyacanthus | |||||
Name authority | Engelmann: in F. A. Wislizenus, Mem. Tour N. Mexico, 111. (1848) | Engelmann: in F. A. Wislizenus, Mem. Tour N. Mexico, 100. (1848) | ||||
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