Rhamnus smithii

Greene

Pittonia 3: 17. 1896.

Common names: Smith's buckthorn
Endemic
Treatment appears in FNA Volume 12. Treatment on page 49. Mentioned on page 46.

Shrubs, 1–3 m, unarmed. Branchlets greenish to brown, 5 cm, minutely puberulent, glabrescent. Bud-scales pale golden to yellowish, thin, glossy. Leaves deciduous, usually alternate, rarely subopposite; petiole 3–6 (–8) mm; blade green abaxially, glossy green or yellow-green adaxially, usually lanceolate, sometimes elliptic-lanceolate or oblong-lanceolate, 3–8 cm, herbaceous to subcoriaceous, base cuneate, margins crenulate to serrulate, apex acute to obtuse or rounded, both surfaces glabrous; secondary-veins 7–11 pairs, all diverging at nearly same angle. Inflorescences axillary fascicles or flowers solitary. Pedicels (0–) 0.5–2.5 mm. Sepals 4. Petals 4. Drupes black, globose or slightly elongate, 4–6 (–8) mm; stones 2.


Phenology: Flowering May–Jun.
Habitat: Dry, grassy hillsides, gravelly terraces, shale knolls, mesic slopes, rocky meadows, sandy alluvium, sagebrush, conifer forests.
Elevation: 2100–2600(–3000) m.

Discussion

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Rhamnus smithii"
perigynous +  and epigynous +
acute +  and obtuse or rounded +
Guy L. Nesom +  and John O. Sawyer† +
Greene +
cuneate +
yellow-green +, green +  and glossy +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
oblong-lanceolate;elliptic-lanceolate;lanceolate +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
herbaceous +  and subcoriaceous +
glabrescent +  and puberulent +
5 cm50 mm <br />0.05 m <br /> (?) +
pale golden;yellowish +
Smith's buckthorn +
Colo. +  and N.Mex. +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
elongate +  and globose +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2100–2600(–3000) m. +
bisexual +  and unisexual +
Dry, grassy hillsides, gravelly terraces, shale knolls, mesic slopes, rocky meadows, sandy alluvium, sagebrush, conifer forests. +
circumscissile +
free +  and adnate +
campanulate +  and cupulate +
unisexual +  and bisexual +
subopposite +  and alternate +
deciduous +
crenulate;serrulate +
intrastaminal +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
not fleshy +
perigynous +  and epigynous +
yellowish +  and cream +
adnate +  and distinct +
not clawed +  and spatulate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering May–Jun. +
2-4-carpellate +
oblong-obovoid +  and obovoid +
greenish white +  and white +
distinct +
crested;not keeled;ovate-triangular +
opposite +  and subopposite +
4 +  and 5 +
2 +  and 4 +
Rhamnus smithii +
species +
deciduous +  and evergreen +
spreading +  and erect +
polygamous +, dioecious +  and synoecious +