|University of California, Berkeley|
|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] perennial herb to subshrub from taproot or woody caudex, glabrous or tomentose, often glandular-sticky. Leaf: simple, alternate, generally not fleshy, entire, crenate, serrate, or pinnately lobed, gland-dotted. Inflorescence: heads generally radiate (discoid); involucre obconic to hemispheric, generally gummy; phyllaries in 4--10 graduated series; receptacle flat to convex, +- pitted, epaleate. Ray Flower: 0--60; corolla yellow. Disk Flower: corolla yellow; anther tip lanceolate; style-branch appendages linear to lanceolate, generally >= stigmatic portion. Fruit: cylindric or swollen-obconic, shiny-white to +- brown, smooth or ridged, glabrous; pappus of 1--6 narrow awns (occasionally construed as bristle-like) [25--40 bristles], +- < disk corolla, generally entire, deciduous.
Species In Genus: +- 60 species: central and western North America, South America. Etymology: (D.H. Grindel, Latvian botanist, 1776--1836) Note: Variable. Morphologically intermediate plants common where species ranges overlap. Strother & Wetter treated all California species except Grindelia squarrosa and Grindelia fraxinipratensis in Grindelia hirsutula. Grindelia ciliata (Nutt.) Spreng. [Prionopsis ciliata (Nutt.) Nutt.], with pappus of many united bristles (falling as a unit), is an historical waif from northern CCo, northern SCo.
eFlora Treatment Author: Abigail J. Moore
Jepson Online Interchange
Key to GrindeliaPrevious taxon: Gnaphalium palustre
Next taxon: Grindelia camporum
Citation for this treatment: Abigail J. Moore 2016. Grindelia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=451, accessed on September 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on September 29, 2016.