Sunday, May 28, 2017

Rosa california (California Wild Rose)

5/19/17 William Heise County Park, Laguna Mountains, San Diego County, CA


COMMON NAME: California Wild Rose

SPECIES: Rosa california

FAMILY: Rosaceae (Rose Family)

LIFE LIST DATE: 5/19/2017

LOCATION: William Heise County Park, Laguna Mountains, San Diego County, CA


Treatment from Jepson eFlora:

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

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