Echinopepon wrightii

(A. Gray) S. Watson

Bull. Torrey Bot. Club 14: 158. 1887.

Illustrated
Basionym: Elaterium wrightii A. Gray Smithsonian Contr. Knowl. 5(6): 61. 1853
Synonyms: Echinocystis wrightii (A. Gray) Cogniaux
Treatment appears in FNA Volume 6. Treatment on page 21. Mentioned on page 20.

Stems 0.5–4 m, hirsute, hairs stipitate-glandular. Leaf-blades reniform to orbiculate, angular or undulate to shallowly lobed, 5–8 (–15) cm wide, base broadly cordate, margins entire or denticulate, surfaces hispid to hispidulous. Inflorescences: staminate flowers in simple or compound racemes 6–12 cm. Flowers: sepals narrowly triangular; petals triangular-ovate, 3–4 mm, apex acute to slightly obtuse, surfaces stipitate-glandular abaxially, punctate-glandular adaxially, corolla rotate, 6–8 mm diam.; anther thecae arcuate. Capsules tapering to base, 2.5–3 × 1.4–1.8 cm, surface and prickles hirsute, hairs stipitate-glandular, beak 10 mm, prickles 10–20 mm. Seeds without depression on surfaces. 2n = 24.


Phenology: Flowering Jun–Oct.
Habitat: Canyon bottoms, washes, cliff bases, desert grasslands, oak woodlands, desert scrub, riparian scrub and woodlands, roadsides, orchards
Elevation: 500–1500 m

Distribution

V6 28-distribution-map.jpg

Ariz., N.Mex., Tex., Mexico (Chihuahua), Mexico (Sonora), Mexico (Zacatecas)

Discussion

Records for Echinopepon wrightii in the flora area are from four counties in New Mexico and from seven counties in Arizona. The species is included here for Texas on the basis of the statement by D. S. Correll and M. C. Johnston (1970) that it occurs in extreme west Trans-Pecos Texas; a voucher has not been seen.

The distribution of Echinopepon wrightii was described by A. K. Monro and P. J. Stafford (1998) as only Central Mexico; this obviously was in error. The inclusion of Zacatecas as part of the range of E. wrightii follows their citation of a collection from that state, the only one cited by them apart from the type.

Selected References

None.

Lower Taxa

None.

"/4" is not declared as a valid unit of measurement for this property.

... more about "Echinopepon wrightii"
distinct +  and connate +
Guy L. Nesom +
(A. Gray) S. Watson +
unbranched +  and branched +
cordate +
Elaterium wrightii +
calyptralike +
10 cm100 mm <br />0.1 m <br /> (?) +
subentire;reniform;orbiculate +
tubular +, saucer--shaped +, campanulate +  and rotate +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (?) +  and 1.8 cm18 mm <br />0.018 m <br /> (?) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua) +, Mexico (Sonora) +  and Mexico (Zacatecas) +
500–1500 m +
furrowed +  and echinate +
dehiscent +  and indehiscent +
bristly +, smooth +, hairy +  and glabrous +
tuberculate +  and muricate +
fleshy +  and hard +
echinate +, thin-walled +  and capsular +
beaked +  and symmetric +
obovoid +
Canyon bottoms, washes, cliff bases, desert grasslands, oak woodlands, desert scrub, riparian scrub and woodlands, roadsides, orchards +
stipitate-glandular +
subglobose +
perennial +
dioecious +  and monoecious +
umbellate;subumbellate +
solitary +, corymbose +, fasciculate +, racemose +  and paniculate +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
petiolate +, estipulate +  and simple +
rounded;ovate-triangular;deltate +
denticulate +  and entire +
not differentiated +
punctate-glandular to stipitate-glandular +  and eglandular +
induplicate-valvate +  and imbricate +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
pubescent +  and glabrous +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Jun–Oct. +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Bull. Torrey Bot. Club +
compound +  and simple +
6 cm60 mm <br />0.06 m <br /> (12 cm120 mm <br />0.12 m <br />) +
slender-fibrous +
not arillate +
flattened +  and ovoid +
triangular +
Illustrated +
climbing +  and procumbent +
sprawling +  and prostrate +
50 cm500 mm <br />0.5 m <br /> (400 cm4,000 mm <br />4 m <br />) +
columnar +
hirsute +, stipitate-glandular +, hispid +  and hispidulous +
corrugate +  and rugose or tuberculate +
Echinocystis wrightii +
Echinopepon wrightii +
Echinopepon +
species +
[2-]3-branched +
not fused +  and connate +
plant +  and climbing +