Isocoma acradenia

Taxobox
name = "Isocoma acradenia"


regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Asterales
familia = Asteraceae
tribus = Astereae
genus = "Isocoma"
species = "I. acradenia"
binomial = "Isocoma acradenia"
binomial_authority = (Greene) Greene
synonyms =
*"Bigelowia acradenia" Greene
*"Haplopappus acradenia" (Greene) S.F.Blake

"Isocoma acradenia" is a species of flowering plant in the daisy family known by the common name alkali goldenbush. It is native to the southwestern United States and Baja California, where it grows in dry, sandy areas, particularly mineral-rich areas such as alkali flats and gypsum soils. This is a bushy or scraggly subshrub reaching maximum heights of just over a meter. It produces erect, branching stems which are a shiny pale yellowish white, aging to a yellow-gray. Along the tough, hard-surfaced stems are linear or oval-shaped glandular leaves 1 to 6 centimeters long, sometimes with stumpy teeth along the edges. They are gray-green and age to pale gray or tan. The inflorescences along the top parts of the stem branches are clusters of four or five flower heads. Each head is a capsule encased in bumpy, glandular greenish phyllaries bearing many golden yellow disc florets at its mouth. Each disc floret is somewhat cylindrical and protruding. The fruit is an achene a few millimeters long with a yellowish pappus adding an additional few millimeters.

External links

* [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,1449,1450 Jepson Manual Treatment]
* [http://plants.usda.gov/java/profile?symbol=ISAC2 USDA Plants Profile]
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Isocoma+acradenia Photo gallery]