Datura quercifolia |
Datura wrightii |
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Chinese thorn-apple, oak-leaf jimsonweed or thorn-apple |
angel trumpet, angel's trumpet, jimson weed, sacred datura, sacred thorn-apple |
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Habit | Herbs annual, to 8 dm. | Herbs perennial, to 12 dm, roots tuberous. |
Stems | hairy, sometimes villous. |
usually canescent, sometimes glabrescent. |
Leaf | blades elliptic to narrowly ovate, to 16 × 10 cm, margins usually pinnately lobed, sometimes sinuate-dentate, abaxial surface hairy, adaxial surface glabrescent. |
blades ovate, to 22 × 16 cm, margins entire or irregularly sinuate-dentate, abaxial surface canescent (especially along veins), hairs appressed or curved, sometimes glandular, adaxial surface puberulent to glabrescent. |
Flowers | calyx hairy along veins, tube cylindric, 5-toothed; corolla whitish to purple, trumpet-shaped, 4–8 cm, acuminate lobes alternating with sinuses. |
calyx canescent along veins, tube cylindric, 5-toothed; corolla white, sometimes tinged pale lavender, broadly funnelform, usually puberulent along veins, 14–26 cm, acuminate lobes alternating with smaller lobules. |
Capsules | erect, dehiscent by 4 valves, pericarp dry, glabrous or hairy, with prickles unequal, proximals shorter than distals; calyx remnant not accrescent. |
pendent, irregularly dehiscent, pericarp fleshy, puberulent, with prickles usually less than 10 mm; calyx remnant slightly accrescent. |
Seeds | black, 3–5 mm, convex marginal ridge absent, testa rugose; caruncle absent. |
brown, 4–6 mm, convex marginal ridge present, testa smooth; caruncle present. |
2n | = 24. |
= 24. |
Datura quercifolia |
Datura wrightii |
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Phenology | Flowering Jul–Oct. | Flowering Jun–Oct. |
Habitat | Gardens, cultivated fields, irrigation ditches, margins of roads and trails, waste places in various types of vegetation. | Streamsides, irrigation ditches, road and trail margins, waste places, desert and desert-margin shrublands, grasslands. |
Elevation | 0–2200 m. (0–7200 ft.) | 0–2100 m. (0–6900 ft.) |
Distribution |
AR; AZ; CA; GA; KS; LA; MA; MD; NC; NM; OK; OR; PA; SC; TX; Mexico
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AL; AR; AZ; CA; CO; CT; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; TX; UT; VA; WA; WI; WV; WY; Mexico (Baja California, Chihuahua, Sonora) [Introduced nearly worldwide]
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Discussion | Datura quercifolia is native to the Chihuahuan Desert, where it hybridizes occasionally with introduced D. stramonium. In the flora area, it is native to Texas and possibly New Mexico. Its geographic range is expanding especially in agricultural habitats. Although recently documented in central California (former orange orchard in Riverside; 1984, 1996), it has not expanded its range in that state. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Datura wrightii has been introduced worldwide both as an ornamental and unintentionally. In the flora area, it is native in Texas and possibly New Mexico. The combination D. innoxia subsp. quinquecuspida (Torrey) A. S. Barclay is an invalidly published synonym of D. wrightii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Solanaceae > Datura | Solanaceae > Datura |
Sibling taxa | ||
Synonyms | D. metel var. quinquecuspida | |
Name authority | Kunth in A. von Humboldt et al.: Nov. Gen. Sp., 3(fol.): 6; 3(qto.): 7. (1818) | Regel: Gartenflora 8: 193, plate 260. (1859) |
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