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|Jepson eFlora: Taxon page
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|Family: Orobanchaceae||View Description||Dichotomous Key|
|Genus: Castilleja||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Castilleja ambigua Hook. & Arn.
Habit: Annual 10--30 cm, generally much-branched, decumbent, puberulent. Leaf: 10--50 mm, > 3 mm wide, lanceolate to oblong; lobes 0--5. Inflorescence: 3--12 cm, 3--4 cm wide, often dense; bracts 15--25 mm, oblong to ovate, tipped yellow (cream) to rose-purple, lobes 3--9, central lobe generally rounded. Flower: calyx 12--20 mm, divided 1/2 abaxially and on sides, 2/3 adaxially, lobes linear; corolla 14--25 mm, pale yellow or rose-purple, beak 4--5 mm, straight, puberulent, lower lip 3--4 mm, pouches 3--7 mm wide, 1--2 mm deep, generally purple-dotted at base; filaments glabrous; stigma generally +- exserted. Fruit: 8--12 mm. Seed: coat shallowly netted, tight-fitting. Chromosomes: 2n=24.
Note: Highly variable and difficult; many local, +- ecological forms; needs study.
eFlora Treatment Author: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard
Jepson Online Interchange
Previous taxon: Castilleja affinis subsp. neglecta
Next taxon: Castilleja ambigua subsp. ambigua
Citation for this treatment: Margriet Wetherwax, T.I. Chuang & Lawrence R. Heckard 2016. Castilleja ambigua, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=18158, accessed on October 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on October 25, 2016.