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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual, biennial [perennial herb] from strong taproot; herbage +- glabrous in California; sap milky. Stem: branches few, stiffly ascending. Leaf: basal and cauline, alternate, sessile, sheathing, entire, grass-like. Inflorescence: heads liguliflorous, 1, generally closed by mid-day; peduncle long, bractless; involucre cylindric, urn-shaped, or narrowly conic in bud, +- bell-shaped in flower; phyllaries in 1 series, linear to lanceolate, acute, reflexed in fruit; receptacle flat to convex, pitted, epaleate. Flower: corolla yellow to bronze or purple; ligules readily withering. Fruit: 2.5--3 cm, cylindric or +- fusiform, 5--10-ribbed, ribs generally roughened; beak stout, > body; pappus of stout plumose bristles, 2° bristles tangled, tips of a few 1° bristles exceeding others, unbranched; fruits spreading, forming spheric ball 4--5 cm diam.
Species In Genus: +- 150 species: Eurasia, Mediterranean, northern Africa, widely naturalized (hybrid species have evolved from aliens in western North America). Etymology: (Greek: goat's beard)
Unabridged Note: Allotetraploid hybrid species Tragopogon mirus Ownbey (Tragopogon dubius × Tragopogon porrifolius) and Tragopogon miscellus Ownbey (Tragopogon pratensis × Tragopogon dubius) have originated (apparently multiple times) in western North America. Neither has yet been reported from California, but may be expected, especially where parental species co-occur. Hybrids variably combine features of parents.
eFlora Treatment Author: David J. Keil & G. Ledyard Stebbins
Jepson Online Interchange
Key to TragopogonPrevious taxon: Tracyina rostrata
Next taxon: Tragopogon dubius
Citation for this treatment: David J. Keil & G. Ledyard Stebbins 2017. Tragopogon, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=641, accessed on March 29, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 29, 2017.