Jatropha dioica var. graminea

McVaugh

Bull. Torrey Bot. Club 72: 39. 1944.

Treatment appears in FNA Volume 12. Treatment on page 205. Mentioned on page 204.

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.


Phenology: Flowering and fruiting late spring–early summer.
Habitat: Dry sandy soils.
Elevation: 100–900 m.

Distribution

Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (San Luis Potosí), Mexico (Zacatecas)

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.

Selected References

None.

Lower Taxa

None.

"connate" is not a number.

puberulent +  and hairy +
membranous +
Bijan Dehgan +
McVaugh +
attenuate +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
unlobed;linear-spatulate +
0.2cm;0.4cm +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
ellipsoidal +
1.1 cm11 mm <br />0.011 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
white;pinkish white +
Tex. +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (San Luis Potosí) +  and Mexico (Zacatecas) +
100–900 m. +
staminate +  and pistillate +
stipitate-glandular +
subtending +
Dry sandy soils. +
axillary +  and terminal +
bisexual +  and unisexual +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
palmate +  and pinnate +
blood red +, colorless +  and cloudy-whitish +
deciduous +
palmate +  and pinnate +
crenate +, repand +  and subentire +
extrastaminal +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
connate;distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not stipitate-glandular +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering and fruiting late spring–early summer. +
1-3-carpellate +
Bull. Torrey Bot. Club +
12 cm120 mm <br />0.12 m <br /> (?) +
spheric +
2.5mm (?) +  and 3mm (?) +
ovate +  and elliptic-lanceolate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
fast-growing +
Illustrated +
free +, connate +  and distinct +
connate;distinct +
much-branched +
red;dark red or grayish +
rubbery-succulent +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
connate +  and distinct +
connate +  and distinct +
0.25 cm2.5 mm <br />0.0025 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
Jatropha dioica var. graminea +
Jatropha dioica +
variety +
5] +  and 2 +