Jatropha macrorhiza Benth.
Family: Euphorbiaceae
ragged nettlespurge,  more...
Jatropha macrorhiza image
Anthony Mendoza  
Kearney and Peebles 1969, McDougall 1973
Duration: Perennial Nativity: Native Lifeform: Forb/Herb General: Herbaceous perennials, to 50 cm tall, stems erect, sometimes purplish, herbage glabrous, broken stems with clear latex, plants with a tuber-like root. Leaves: Large, alternate, palmately 7-9 lobed, orbicular in outline, 15 cm broad or less, the lobes irregularly toothed, each tooth tipped with a slender bristle, blades sometimes dark purple in color, petioles 3-12 cm long, glabrous, stipules dissected into several finely-branched fringes up to 1 cm long. Flowers: Dioecious, showy, pistillate flowers bright pink, petals 5, up to 10 mm long, sepals about as long as the petals, the margins spinulose-dentate, staminate flowers with 5 petals 8-12 mm long, sepals 4-6 mm long, with entire margins, the outer stamens shorter than the inner one, stamens 8-10, the filaments united below into a column, anthers in 2 whorls, the lower whorl of 5 and the upper one of 3-5, inflorescences borne in densely flowered cymes, the branches sometimes purplish, sparsely puberulent, the peduncles 1-6 cm long. Fruits: Capsules obtusely 3-lobed, 10-13 mm long and wide, (as large or larger than the flowers), glabrous, with a small appendage near the hilum (carunculate). Seeds buff with brown or red spots, 7-9 mm long. Ecology: Found on mesas and plains; 3,500-7,500 ft (1067-2286 m); flowering May-October. Distribution: AZ, sw NM, s TX; south to n MEX. Notes: This is a charismatic plant you won-t forget once you recognize it and is distinct from other species in the southwest. The large, palmately lobed, bristle-toothed leaves coming out of an erect stem with pink flowers really stands out. It emerges from a large storage root and is poisonous. Ethnobotany: There is no use recorded for this species, but other species in this genus have uses. But this plant is poisonous. Etymology: Jatropha comes from the Greek iatros for doctor and trophe for food, while macrorhiza means large root. Synonyms: Jatropha arizonica, Jatropha macrorhiza var. septemfida Editor: LCrumbacher 2012, FSCoburn 2015
Jatropha macrorhiza image
Liz Makings  
Jatropha macrorhiza image
E. Makings  
Jatropha macrorhiza image
Liz Makings  
Jatropha macrorhiza image
Sue Carnahan  
Jatropha macrorhiza image
Sue Carnahan  
Jatropha macrorhiza image
Patrick Alexander  
Jatropha macrorhiza image
Patrick Alexander  
Jatropha macrorhiza image
Sue Carnahan  
Jatropha macrorhiza image
Patrick Alexander  
Jatropha macrorhiza image
Patrick Alexander  
Jatropha macrorhiza image
Sue Carnahan  
Jatropha macrorhiza image
Thomas Van Devender  
Jatropha macrorhiza image
Sue Carnahan  
Jatropha macrorhiza image
Thomas Van Devender  
Jatropha macrorhiza image
Thomas Van Devender  
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Liz Makings  
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
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Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Liz Makings  
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
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Jatropha macrorhiza image
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Jatropha macrorhiza image
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Jatropha macrorhiza image
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Jatropha macrorhiza image
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Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Frank Rose  
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image
Jatropha macrorhiza image