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Tragia ramosa

Higher Taxonomy
Family: EuphorbiaceaeView DescriptionDichotomous Key

Habit: Annual to shrub, tree [vine, cactus-like succulent]; monoecious or dioecious; sap clear or milky. Stem: generally branched [fleshy or spiny]. Leaf: generally simple, alternate to whorled, generally stipuled, sessile or petioled; blade entire, toothed, or lobed. Inflorescence: flowers solitary or in terminal or axillary cymes, racemes, spikes, or panicles, or (in Euphorbia) 1° inflorescence a compact, flower-like cyathium with much-reduced flowers enclosed within an involucre of fused bracts, cyathia terminal or axillary, 1 or in cyme-like arrays. Flower: unisexual, +- radial; sepals 0 or 2--6, free or fused; petals generally 0(5); stamens 1--many, free or filaments fused; ovary superior, chambers (1)3(4), styles free or fused, undivided, forked, or variously lobed. Fruit: generally capsule that splits into mericarps that then dehisce, releasing seeds. Seed: 1 per chamber; knob-like appendage sometimes present at attachment scar.
Genera In Family: 217 genera, 6000+ species: +- worldwide especially tropics; some cultivated (Aleurites, tung oil; Euphorbia species; Hevea, rubber; Ricinus). Toxicity: Many species +- highly TOXIC, due primarily to latex, especially if eaten or in contact with skin, eyes. Note: Eremocarpus moved to Croton, Tetracoccus moved to Picrodendraceae for TJM2; Chamaesyce moved to Euphorbia here (key to genera revised by Thomas J. Rosatti).
eFlora Treatment Author: Mark H. Mayfield & Grady L. Webster, except as noted
Scientific Editor: Bruce G. Baldwin.
Genus: TragiaView Description 

Common Name: NOSEBURN
Habit: Perennial herb < 0.5 m; hairs stinging, nettle-like; monoecious. Stem: spreading to erect, branched, sometimes twining. Leaf: cauline, alternate; stipules persistent. Inflorescence: raceme, terminal or opposite leaf; staminate flowers distal to pistillate flowers. Staminate Flower: sepals [3]4--5; stamens 3--6[50]; nectary 0. Pistillate Flower: sepals 5[4--8]; ovary 3-chambered, styles simple, +- fused at base. Fruit: +- spheric. Seed: smooth or +- rough; scar not appendaged.
Species In Genus: +- 100 species: tropics, warm temperate worldwide. Etymology: (Tragus, name for Hieronymus Bock, German herbalist, 1498--1554)

Tragia ramosa Torr.
Habit: Plant rough-hairy. Stem: 1--3 dm. Leaf: stipules 1--4.5 mm, lanceolate to ovate; petiole 2--20 mm; blade 1--2 cm, lanceolate to ovate, base truncate to +- lobed, margin coarsely, sharply toothed. Inflorescence: 0.5--1 cm, +- spreading; pedicels 1--2 mm; staminate flowers 2--4; pistillate flower 1. Staminate Flower: sepals 4--5, +- 1 mm, recurved; stamens 3--6, filaments +- flattened. Pistillate Flower: sepals 5, 1.5--2 mm; ovary < 2 mm diam, puberulent to finely bristly, styles fused in proximal 1/3. Fruit: 3--4 mm, 6--8 mm wide, depressed-spheric, sparsely and finely bristly. Seed: 2.5--3.5 mm, +- spheric.
Ecology: Dry, rocky slopes, scrub, pinyon/juniper woodland; Elevation: 900--1900 m. Bioregional Distribution: DMtns; Distribution Outside California: to central United States, Texas, Mexico. Flowering Time: Apr--May
Synonyms: Tragia stylaris Müll. Arg.
eFlora Treatment Author: Mark H. Mayfield & Grady L. Webster
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Tragia ramosa


Citation for this treatment: Mark H. Mayfield & Grady L. Webster 2016. Tragia ramosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 03, 2016.

Tragia ramosa
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© 2015 Keir Morse
Tragia ramosa
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© 2012 Keir Morse
Tragia ramosa
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© 2010 James M. Andre
Tragia ramosa
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© 2005 James M. Andre
Tragia ramosa
click for enlargement
© 2015 Keir Morse
Tragia ramosa
click for enlargement
© 2012 Keir Morse

More photos of Tragia ramosa in CalPhotos

Geographic subdivisions for Tragia ramosa:
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.