Jatropha cardiophylla

(Torrey) Müller Arg. in A. P. de Candolle and A. L. P. P. de Candolle

Prodr. 15(2): 1079. 1866.

Common names: Sangre de Cristo heartleaf dragon's blood or limberbush
Basionym: Mozinna cardiophylla Torrey in W. H. Emory Rep. U.S. Mex. Bound. 2(1): 198. 1859
Treatment appears in FNA Volume 12. Treatment on page 203. Mentioned on page 199, 204.

Subshrubs, to 0.5–1 m, dioecious, rhizomatous, often forming large clumps. Stems erect or ascending, reddish-brown, much-branched, rubbery-succulent, glabrous; short-shoots common; latex watery, colorless to cloudy-whitish in young shoots, blood red in basal portions of older shoots and rhizomes. Leaves deciduous, born profusely on long and short-shoots in rainy season; stipules absent; petiole 1–2.5 cm, not stipitate-glandular; blade widely ovate-deltate, 1.8–4.6 × 1.5–2.6 cm, unlobed, base truncate, margins sinuate to weakly serrate-crenate with glands on apices of crenations in younger leaves, apex acuminate, membranous, surfaces glabrous; venation palmate. Inflorescences axillary, cymes; staminate with peduncle 0.8–3 cm, pistillate with peduncle absent; bracts 1–1.5 mm, margins entire, or sometimes with glands, glabrous. Pedicels 2–3 mm. Staminate flowers: sepals distinct, ovate to obovate, 2–2.5 × 0.8–1 mm, margins entire, apex acute, surfaces glabrous; corolla light pink to white, tubular, petals connate to 3/4 length, 5–7.5 × 1.8–2.2 mm, surfaces glabrous; stamens 10 in 2 whorls (5 + 5); filaments of both whorls distinct, outer whorl 1 mm, inner whorl 2 mm. Pistillate flowers resembling staminate, but sepals obovate, 1–2.5 × 0.8–2 mm, apex rounded; petals connate to 1/2 length, 6.5–9 × 1.8–2.7 mm; carpel 1; style 1 mm. Capsules spheric, apiculate, 1.1–1.8 × 1.1–1.8 cm, tardily dehiscent. Seeds mottled gray-brown, spheric, 12 mm diam.; caruncle rudimentary. 2n = 22.


Phenology: Flowering and fruiting spring–summer.
Habitat: Gravelly desert washes and volcanic hillsides.
Elevation: 600–1500 m.

Discussion

Jatropha cardiophylla and J. dioica often have been confused because of the similarity of their spreading rhizomatous habits and red rubbery branches during the dormant season. The two species are easily distinguished by their leaves. Furthermore, J. cardiophylla is restricted to the Sonoran Desert; J. dioica is found only in the Chihuahuan Desert and areas to the east.

Selected References

None.

Lower Taxa

None.
... more about "Jatropha cardiophylla"
distinct +
membranous +
Bijan Dehgan +
(Torrey) Müller Arg. in A. P. de Candolle and A. L. P. P. de Candolle +
Mozinna cardiophylla +
1.8 cm18 mm <br />0.018 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
unlobed;ovate-deltate +
1.5cm;2.6cm +
1.1 cm11 mm <br />0.011 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Sangre de Cristo +  and heartleaf dragon's blood or limberbush +
light pink;white +
Ariz. +  and Mexico (Sonora) +
600–1500 m. +
pistillate +  and staminate +
stipitate-glandular +
subtending +
Gravelly desert washes and volcanic hillsides. +
bisexual +  and unisexual +
2 cm20 mm <br />0.02 m <br /> (?) +
palmate +  and pinnate +
blood red +, colorless +  and cloudy-whitish +
deciduous +
palmate +  and pinnate +
sinuate +  and weakly serrate-crenate +
extrastaminal +
1 cm10 mm <br />0.01 m <br /> (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Purple (?) +, Red (?) +, Pink (?) +, Greenish yellow (?) +  and White (?) +
connate;connate +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
not stipitate-glandular +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering and fruiting spring–summer. +
1-3-carpellate +
12 cm120 mm <br />0.12 m <br /> (?) +
spheric +
distinct +
2mm (?) +  and 2.5mm (?) +
ovate +  and obovate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
older +  and young +
free +, connate +  and distinct +
connate;distinct +
much-branched +
reddish-brown +
ascending +  and erect +
rubbery-succulent +
deciduous +  and persistent +
connate +  and distinct +
connate +  and distinct +
1 cm10 mm <br />0.01 m <br /> (?) +
Jatropha cardiophylla +
Jatropha +
species +
5] +  and 2 +