dcsimg

Comprehensive Description

provided by North American Flora
Rubus glaucus Benth. PL Hartw. 173. 1845
Stems biennial, 1-3 m. high, terete or nearly so, glabrous, more or less glaucous-pniinose, armed with rather small, recurved, flat prickles; leaves usually all pinnately trifoliolate; stipules setaceous; petioles, petiolules, and midveins recurved-prickly; petioles 5-10 cm. long; terminal leaflets petioluled, ovate or ovate-lanceolate, 6-15 cm. long, glabrous and dark-green above, often blackening in drying, white-tomentose beneath, finely double-serrate, obtuse, rounded or subcordate at the base, abruptly acuminate; lateral veins 9-12 on each side; petiolules 1-5 cm. long; lateral leaflets sessile or subsessile, or those of the main stem petioluled, similar or a little more lanceolate, acute to rounded at the base; inflorescence rather few-flowered, rounded, terminal or in the upper leaf-axils; branches more or less tomentose and sometimes glandular; sepals lanceolate, gradually acuminate, densely tomentose, 6-7 mm. long, in fruit strongly reflexed; petals white, about equaling the sepals; fruit dark-purple, 12-20 mm. long, 8-15 mm. thick; drupelets numerous, tomentose when young.
Type locality: Mount Pichincha, Ecuador. Distribution-: Southern Mexico to Ecuador.
"Riibus eriocarpus Liebm. Vidensk. Meddel. 1852: 162
Rubus sp. occidentalis prox. Schlecht. & Cham. Linnaea 5: 571. 1830.
Rubus occidentalis Sdhlecht. Linnaea 13: 271. 1839. Not R. occidentalis L. 1753.
Rubus occidentalis. eriocarpus Focke, Abh. Nat. Ver. Bremen 4: 147. 1874.
1853.
armed
flattened, slightly recurved prickles; leaves all ternate, or those of the turions palmately quinate; stipules cetaceous, pubescent; petioles, petiolules, and midveins glabrous, prickly; petioles on the turions often 1 dm. long; terminal leaflets 6-10 cm. long, ovate, finely double-serrate, abruptly long-acuminate at the apex, rounded or cordate at the base, puberulent above, white-tomentose beneath; lateral veins 12-16 on each side; petiolule 2-3 cm. long; lateral leaflets ovate, lanceolate, rounded at the base, short-petioluled ; leaflets on the floral hranrhes Shorter and less acuminate, the median one with a petiolule 5-15 mm. long, the lateral 443
ones sessile; corymbs terminal, few-flowered, rarely also axillary in the upper axils, tomentose and with weak prickles; sepals lanceolate, longacuminate, 5-6 mm. long, strongly reflexed in fruit; petals elliptic, white, shorter than the sepals, erect; fruit oblong, rarely subglobose, 10-12 mm. long, 6-8 mm. thick; drupelets numerous, villous-tomentose.
Type locality: Chinautla, Puebla.
Distribution: Central and southern Mexico to Panama.
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bibliographic citation
Per Axel Rydberg. 1913. ROSACEAE (pars). North American flora. vol 22(5). New York Botanical Garden, New York, NY
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