|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual, perennial herb, glabrous or hairy. Stem: generally branched, generally erect, < 60 cm. Leaf: opposite (or distal-most alternate), < 20 cm, entire to pinnately cut. Inflorescence: heads radiate (disciform), 1 or in cyme-like cluster; involucre cylindric to obconic, bell-shaped, or hemispheric; phyllaries 4--18 in 1(2) series, free or +- fused; receptacle narrowly conic to hemispheric, smooth, pitted, or rough, epaleate. Ray Flower: 4--16; ray generally yellow (short or 0). Disk Flower: generally many; corolla generally (4)5-lobed, generally yellow to +- orange; anther tip awl-shaped to triangular; style tips triangular or dome-shaped, generally hair-tufted. Fruit: < 5 mm, cylindric to obovoid, black to gray; pappus of awns, scales, or 0.
Species In Genus: 18 species: western North America, Chile. Etymology: (Greek: female student of Plato who dressed as a man) Note: Generally self-sterile.
eFlora Treatment Author: Raymund Chan & Robert Ornduff
Jepson Online Interchange
Key to LastheniaPrevious taxon: Lasiospermum bipinnatum
Next taxon: Lasthenia burkei
Citation for this treatment: Raymund Chan & Robert Ornduff 2016. Lasthenia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=500, accessed on May 24, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 24, 2016.