Flora of North America species comparison

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Jatropha dioica var. graminea
Photo is of parent taxon

leatherstem
Habit Plants to 0.5 m. Leaves: blade linear-spatulate, 1.5–2.5 × 0.2–0.4 cm, unlobed; only midvein visible.
Flowers

sepals connate basally;

petals white;

stamen filaments connate to 1/4 length.

Jatropha dioica var. graminea
Phenology Flowering and fruiting late spring–early summer.
Habitat Dry sandy soils.
Elevation 100–900 m. (300–3000 ft.)
Distribution
from FNA
TX; Mexico (Chihuahua, Coahuila, San Luis Potosí, Zacatecas)
[BONAP county map]
Discussion

The distribution of var. graminea lies west of that of var. dioica and does not extend as far south. In Texas, it is restricted to the trans-Pecos region. Some Mexican specimens erroneously annotated as var. graminea are actually Jatropha rzedowskii J. Jiménez Ramírez.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 205.
Parent taxa Euphorbiaceae > Jatropha > Jatropha dioica
Sibling taxa
J. dioica var. dioica
Name authority McVaugh: Bull. Torrey Bot. Club 72: 39. (1944)
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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