Rhamnus pilosa

(Trelease ex Curran) Abrams

Bull. Torrey Bot. Club 37: 153. 1910.

Common names: Hairyleaf redberry
Endemic
Basionym: Rhamnus crocea var. pilosa Trelease ex Curran Proc. Calif. Acad. Sci., ser. 2, 1: 251. 1888
Synonyms: R. crocea subsp. pilosa (Trelease ex Curran) C. B. Wolf
Treatment appears in FNA Volume 12. Treatment on page 48. Mentioned on page 46, 47.

Shrubs, 1–3 m, unarmed. Branchlets gray, flexible, sparsely to densely softly hirtellous. Leaves persistent, alternate; petiole 2–5 mm; blade dull green abaxially, darker green adaxially, ovate to broadly oblong or orbiculate, 1.5–2 cm, distinctly coriaceous, base cuneate to nearly truncate, margins spinulose, apex rounded, both surfaces sparsely to densely softly hirtellous; secondary-veins 5–7 pairs, all diverging at nearly same angle. Inflorescences fascicles or flowers solitary. Pedicels 2–4 mm. Sepals 4. Petals usually 0, rarely 4. Drupes red, globose, 5–6 mm; stones 2.


Phenology: Flowering Apr–Jun.
Habitat: Granitic substrates, clay soils, sandstone, woodlands, chaparral, coastal sage scrub.
Elevation: 100–1700 m.

Discussion

Rhamnus pilosa is known only from San Diego County and extreme southwestern Riverside County. The species has been reported from Arizona and Mexico (Baja California) (USDA Plants Database, based on L. Abrams and R. S. Ferris 1923–1960, vol. 2), but no specimens have been found to support this claim.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Rhamnus pilosa"
perigynous +  and epigynous +
rounded +
Guy L. Nesom +  and John O. Sawyer† +
(Trelease ex Curran) Abrams +
cuneate to nearly +
Rhamnus crocea var. pilosa +
darker green +  and green +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
ovate;broadly oblong or orbiculate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
coriaceous +
Hairyleaf redberry +
globose +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
100–1700 m. +
bisexual +  and unisexual +
Granitic substrates, clay soils, sandstone, woodlands, chaparral, coastal sage scrub. +
circumscissile +
free +  and adnate +
campanulate +  and cupulate +
unisexual +  and bisexual +
persistent +
intrastaminal +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not fleshy +
perigynous +  and epigynous +
yellowish +  and cream +
adnate +  and distinct +
not clawed +  and spatulate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Apr–Jun. +
2-4-carpellate +
Bull. Torrey Bot. Club +
oblong-obovoid +  and obovoid +
greenish white +  and white +
distinct +
crested;not keeled;ovate-triangular +
opposite +  and subopposite +
4 +  and 5 +
2 +  and 4 +
R. crocea subsp. pilosa +
Rhamnus pilosa +
species +
deciduous +  and evergreen +
spreading +  and erect +
polygamous +, dioecious +  and synoecious +