Flora of North America species comparison

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Echinopepon wrightii

wild balsam-apple
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.

Echinopepon wrightii
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 (1600–4900 ft)
Distribution
from FNA
AZ; NM; TX; Mexico (Chihuahua, Sonora, Zacatecas)
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 6, p. 21.
Parent taxa Cucurbitaceae > Echinopepon
Sibling taxa
E. coulteri
Synonyms Elaterium wrightii, Echinocystis wrightii
Name authority (A. Gray) S. Watson: Bull. Torrey Bot. Club 14: 158. (1887)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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