Frangula obovata
Phytologia 91: 302. 2009.
Shrubs, 1–2.5 m. Stems red to brown or gray-brown, glabrous or pubescent. Leaves deciduous; petiole 5–14 mm; blade usually equally green on both surfaces, not glaucous, obovate to oblong-obovate or oblong, (4–)5–9 × 3.2–6 cm, 1.2–1.8(–2.5) times longer than wide, subcoriaceous to distinctly coriaceous, base truncate to subcordate, margins serrulate to nearly entire, apex obtuse to truncate or rounded, both surfaces minutely puberulous to hirtellous, glabrescent; secondary veins (5–)6–8(–9) pairs. Inflorescences umbels, pedunculate, 2–12-flowered. Pedicels 3–10 mm. Stigmas 3-lobed. Drupes black, globose, 5–8 mm; stones 3.
Phenology: Flowering Apr–Jun.
Habitat: Hanging gardens, cliff faces, talus, canyon bottoms, seepage below cliffs, stream and creek banks.
Elevation: 1300–2400 m.
Distribution
Ariz., Colo., Nev., Utah.
Discussion
Frangula obovata is known from Clark County, Nevada, across northern Arizona and southern Utah to southwestern Colorado; its distribution does not overlap that of F. betulifolia.
Selected References
None.