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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 1--15(20) cm, gray to green, cobwebby to woolly or tomentose. Stem: 1, erect, or 2--10, ascending to prostrate, generally +- forked, +- leafless between forks. Leaf: generally opposite (distal +- alternate), +- sessile, linear to ovate or obovate, entire; distal leaves subtending heads, crowded, largest > proximal leaves. Inflorescence: heads disciform, sessile, single or 2--4 per dense group, generally spheric; involucre 0, simulated by paleae and leaves; receptacle length 1--2 × width, +- obovoid, glabrous (generally not lobed); paleae of pistillate flowers each enclosing flower, deciduous with fruit, +- obovoid or cylindric, length generally < 3 × width, obtuse, bulged out and hood-like distally, tomentose to woolly abaxially, prominently net-veined, veins 5+, margin +- reflexed distally as scarious wing, wing adaxially lateral, generally at >= 2/3 palea, projected inward, hidden in head, +- beak-like; paleae of disk flowers 0. Pistillate Flower: (8)20--100+, all subtended by paleae; corolla obscure, narrowly cylindric. Disk Flower: staminate, 2--10; pappus 0; corolla 4--5 lobed; anther base tailed, tip +- triangular; style tips +- linear-oblong. Fruit: each enclosed by palea, +- club-shaped (then +- compressed laterally) to +- cylindric, smooth, shiny, corolla scar +- terminal; pappus 0.
Species In Genus: 5 species: western North America, southern South America. Etymology: (Greek: slender chaff) Note: Species sometimes appear to intergrade where ranges overlap; needs study.
eFlora Treatment Author: James D. Morefield
Jepson Online Interchange
Key to PsilocarphusPrevious taxon: Pseudognaphalium thermale
Next taxon: Psilocarphus brevissimus
Citation for this treatment: James D. Morefield 2016. Psilocarphus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=576, accessed on August 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 30, 2016.