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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 from slender taproot, +- hairy (but appearing glabrous). Stem: generally simple or branching proximally, erect, generally flexible, glabrous to hairy, green to +- red. Leaf: generally narrowly linear, ciliate, green. Inflorescence: heads radiate, disciform, or discoid, nodding in bud, 1 or in open, +- flat-topped cluster; peduncle slender; involucre 3--7 mm, generally bell-shaped; phyllaries in 2--3(4) series, graduated or +- equal, lanceolate to (ob)ovate, green, margins widely scarious; receptacle flat to slightly convex, epaleate. Ray Flower: present or 0, or corolla reduced to tube; corolla white, yellow, 2-colored yellow and white, or +- red. Disk Flower: 4--90+; corolla yellow to +- red or maroon; style tips linear, acute. Fruit: 1.5--3 mm, oblong-fusiform, generally compressed, generally hairy; pappus of 0--20 fragile, slender bristles.
Species In Genus: 6 species: California, northwestern Baja California. Etymology: (Greek: five bristles, from pappus) Note: Similar, closely related to Rigiopappus, Tracyina.
eFlora Treatment Author: David J. Keil & Meredith A. Lane
Jepson Online Interchange
Key to PentachaetaPrevious taxon: Pectis papposa var. papposa
Next taxon: Pentachaeta alsinoides
Citation for this treatment: David J. Keil & Meredith A. Lane 2016. Pentachaeta, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=546, accessed on April 28, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 28, 2016.