Difference between revisions of "Echinocereus pentalophus"
Cact.-Verz., 20. 1859.
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|name=Cereus pentalophus | |name=Cereus pentalophus | ||
|authority=de Candolle | |authority=de Candolle | ||
| + | |rank=species | ||
|publication_title=Mém. Mus. Hist. Nat. | |publication_title=Mém. Mus. Hist. Nat. | ||
|publication_place=17: 117. 1828 | |publication_place=17: 117. 1828 | ||
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|elevation=0-2200 m | |elevation=0-2200 m | ||
|distribution=Tex.;Mexico (Coahuila;Nuevo León;San Luis Potosí;Tamaulipas). | |distribution=Tex.;Mexico (Coahuila;Nuevo León;San Luis Potosí;Tamaulipas). | ||
| − | |discussion=<p>Our northern plants of <i>Echinocereus pentalophus</i> are < | + | |discussion=<p>Our northern plants of <i>Echinocereus pentalophus</i> are <i></i>var.<i> procumbens</i> (Engelmann) P. Fournier; they have often been misidentified as <i>E. berlandieri</i>. Both taxa have often been misidentified as the Mexican species E. blanckii [often misspelled as E. “blankii”], of confused authorship. Confusing variation of <i>E. pentalophus</i> has promulgated misidentifications, misapplications of names, and attempts to recognize multiple taxa.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Echinocereus pentalophus | name=Echinocereus pentalophus | ||
| − | |||
|authority=(de Candolle) Haage | |authority=(de Candolle) Haage | ||
|rank=species | |rank=species | ||
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|publication year=1859 | |publication year=1859 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V4/V4_327.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Echinocereus | |genus=Echinocereus | ||
Revision as of 21:39, 16 December 2019
Plants branched, clumps to 20 × 100 cm. Stems weak, sprawling, soon decumbent [erect and rhizomatous], ± 10–60 × 1–2[–6] cm; ribs 4–5, crests sharp and straight to poorly defined and undulate; areoles 5–12 mm apart. Spines (3–)4–7(–9) per areole, usually very stiff and straight, yellowish, tan, ashy white to dark gray, or pale pink, tips dark, all terete; radial spines (3–)4–6(–8) per areole, spreading, 6–37 mm; central spines 0–1 per areole, porrect or ascending, 4–36(–60) mm. Flowers 6–10 × 7.5–10(–15) cm; flower tube 20–25 × 8–20 mm; flower tube hairs 3–6 mm; inner tepals brilliant pink or magenta distally with distinct white or yellow proximal regions of variable extent [very rarely white throughout], 3.5–6 × 9–18 mm, tips relatively thin and delicate; anthers orange-yellow; nectar chamber 3–6 mm. Fruits green, (10–)15–25 mm, pulp white. 2n = 22.
Phenology: Flowering Apr–May; fruiting 3-4 months after flowering.
Habitat: Tamaulipan thorn scrub, Agave lechuguilla-Hechtia associations, alluvial coastal plains, [pine-oak forests, limestone cliffs]
Elevation: 0-2200 m
Distribution
Tex., Mexico (Coahuila, Nuevo León, San Luis Potosí, Tamaulipas).
Discussion
Our northern plants of Echinocereus pentalophus are var. procumbens (Engelmann) P. Fournier; they have often been misidentified as E. berlandieri. Both taxa have often been misidentified as the Mexican species E. blanckii [often misspelled as E. “blankii”], of confused authorship. Confusing variation of E. pentalophus has promulgated misidentifications, misapplications of names, and attempts to recognize multiple taxa.
Selected References
None.