Frangula purshiana subsp. anonifolia

(Greene) J. O. Sawyer & S. W. Edwards

Madroño 54: 173. 2007.

Endemic
Basionym: Rhamnus anonifolia Greene Pittonia 3: 16. 1896
Synonyms: Rhamnus purshiana var. anonifolia (Greene) Jepson
Treatment appears in FNA Volume 12. Treatment on page 57.

Plants 1–5 m, usually treelike. Twigs red to brown, glabrescent. Leaves deciduous; blade widely elliptic or obovate, 6–15 cm, herbaceous, base usually cuneate, margins irregularly toothed or entire, apex obtuse to truncate, surfaces not papillate, sparsely hairy or glabrous, not glaucous adaxially when fresh.


Phenology: Flowering Mar–Jun.
Habitat: Coniferous forest edges, stream banks, non-serpentine substrates.
Elevation: 1000–2000 m.

Discussion

Selected References

None.

Lower Taxa

None.
perigynous +  and epigynous +
obtuse +  and truncate +
John O. Sawyer† +  and Guy L. Nesom +
(Greene) J. O. Sawyer & S. W. Edwards +
cuneate +
Rhamnus anonifolia +
protruding +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
green +  and bluish or greenish gray +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
obovate;elliptic +
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
coriaceous +  and herbaceous +
Calif. +  and Oreg. +
globose +  and depressed-globose +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1000–2000 m. +
Coniferous forest edges, stream banks, non-serpentine substrates. +
circumscissile +
free +  and adnate +
unisexual +  and bisexual +
10-25-flowered +  and pedunculate +
deciduous +
entire;toothed +
intrastaminal +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
clawed +, broadly obovate +  and obcordate +
0.6 cm6 mm <br />0.006 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Flowering Mar–Jun. +
2-4-carpellate +
not furrowed +
obovoid +  and lenticular +
yellowish +  and green or white +
distinct +
spreading +  and erect +
keeled;ovate-triangular +
red +  and brown gray or green +
hairy +  and glabrous +
2-3-lobed +
indehiscent +
glaucous +, glabrous +  and hairy +
not papillate +
Rhamnus purshiana var. anonifolia +
Frangula purshiana subsp. anonifolia +
Frangula purshiana +
subspecies +
glabrescent +
deciduous +  and evergreen +
plant +  and arboreous +
polygamous +, dioecious +  and synoecious +