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|Family: Rhamnaceae||View Description||Dichotomous Key|
|Genus: Ceanothus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Ceanothus papillosus Torr. & A. Gray
Habit: Plant erect, occasionally mound-like, +- dense, 1--3.5 m. Stem: ascending to erect; twigs flexible, not thorn-like, green to gray-brown. Leaf: alternate, evergreen; stipules scale-like; petiole 1--3 mm; blade 11--50 mm, 6--15 mm wide, oblong to narrowly elliptic, flat, thick, adaxially dark green, not furrowed, glandular-papillate, abaxially paler, generally densely hairy, 1-ribbed from base, tip +- obtuse to notched, margin rolled under, minutely gland-toothed, teeth 17--31, glands spheric. Inflorescence: raceme-like, 2--6 cm. Flower: deep blue. Fruit: 2--3 mm, sticky, +- ridged distally; horns 0. Chromosomes: 2n=24.
Ecology: Open sites, chaparral, woodland; Elevation: 90--1500 m. Bioregional Distribution: SnFrB, SCoR, WTR, nw PR; Distribution Outside California: northern Baja California. Flowering Time: Mar--May Note: Were they to be recognized taxonomically, mound-like plants with arched stems from western WTR would be assignable to Ceanothus papillosus var. roweanus McMinn; study needed.
eFlora Treatment Author: Dieter H. Wilken
Jepson Online Interchange
Previous taxon: Ceanothus palmeri
Next taxon: Ceanothus parryi
Citation for this treatment: Dieter H. Wilken 2016. Ceanothus papillosus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=18484, accessed on July 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on July 30, 2016.