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|Jepson eFlora: Taxon page
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|Family: Rosaceae||View Description||Dichotomous Key|
|Genus: Rosa||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Rosa californica Cham. & Schltdl.
Habit: Shrub or thicket-forming, 8--25 dm. Stem: prickles few to many, paired or not, 3--15 mm, thick-based and compressed, generally curved (straight). Leaf: axis +- shaggy-hairy (+- glabrous), hairs to 1 mm, glandless or glandular; leaflets 5--7(9), +- hairy, sometimes glandular; terminal leaflet generally 15--50 mm, +- ovate-elliptic, generally widest at or below middle, tip rounded to acute, margins single- or double-toothed, glandular or not. Inflorescence: (1)3--30(50)-flowered; pedicels generally +- 5--20 mm, generally +- hairy, glandless. Flower: hypanthium 3--5.5 mm wide at flower, glabrous to sparsely hairy, glandless, neck 2--4.5 mm wide; sepals glandular or not, entire, tip generally +- = body, entire; petals generally 15--25 mm, pink; pistils 20--40. Fruit: generally 8--15(20) mm wide, generally (ob)ovoid; sepals generally erect, persistent; achenes generally 3.5--4.5 mm. Chromosomes: n=14.
Ecology: Generally +- moist areas, especially streambanks; Elevation: < 1800 m. Bioregional Distribution: CA-FP (exc CaRH, SNH, Teh); Distribution Outside California: southern Oregon, northern Baja California. Flowering Time: Feb--Nov Note: Variable; needs study.
Unabridged Note: The author has indicated that all range and most elevation extension vouchers now have been annotated as other species
eFlora Treatment Author: Barbara Ertter
Jepson Online Interchange
Previous taxon: Rosa bridgesii
Next taxon: Rosa canina
Citation for this treatment: Barbara Ertter 2017. Rosa californica, in Jepson Flora Project (eds.) Jepson eFlora, Revision 2, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=41631, accessed on April 26, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 26, 2017.