|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. Stem: erect; branches ascending. Leaf: basal and alternate, simple, sessile or petioled, entire or dentate, 3-veined from base. Inflorescence: heads radiate or discoid, 1 or in few- to many-headed cyme-like or panicle-like cluster; peduncle +- elongated; involucre hemispheric; phyllaries +- equal or weakly graduated in 2--3 series, free, green; receptacle paleate, palea folded around and falling with fruit. Ray Flower: 0 or 10--21, sterile; style 0; ray yellow. Disk Flower: many; corolla yellow, tube slender, throat gradually expanded, lobes triangular; anther tips ovate, +- acute; style tips triangular. Fruit: strongly compressed, narrowly wedge-shaped; edges +- white, long-ciliate; faces black, +- hairy; pappus of 2 narrow awns.
Species In Genus: 2 species: southwestern United States, northwestern Mexico. Etymology: (Greek: old, from white-haired involucre)
eFlora Treatment Author: David J. Keil & Curtis Clark
Jepson Online Interchange
Key to GeraeaPrevious taxon: Gazania linearis
Next taxon: Geraea canescens
Citation for this treatment: David J. Keil & Curtis Clark 2017. Geraea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=447, accessed on January 17, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 17, 2017.