Rubus costaricanus Liebm.

Rubus costaricanus Liebrn. Vidensk. Meddel. 1852: 159. 1853
Stems perennial, subterete or obtusely angled, 3 m. high or more, densely grayish shortpilose, more or less glandular-setose with short hairs, scarcely more than twice as long as the pubescence, armed with scattered, curved prickles, which are 4-6 mm. long, pubescent and strongly flattened below; leaves digitately quinate, or the upper ternate; stipules linearsetaceous, 5-8 mm. long; petioles 5-10 cm. long, their pubescence and armature the same as that of the stem; leaflets broadly ovate, acuminate at the apex, rounded or rarely subcordate at the base, sharply double-serrate, dark-green and sparingly pubescent, in age glabrate above, grayish-velutinous beneath, rather firm, with strong veins beneath; middle leaflet 6-10 cm. long, on a petiolule 2-4 cm. long; panicle terminal, rarely axillary, pyramidal; bracts lanceolate, acute, grayish-tomentose; peduncle, its branches, pedicels, and hypanthium tomentose as well as glandular-hispid; sepals ovate, acute or short-acuminate, tomentose, rarely if at all glandular, reflexed in fruit; petals obovate, emarginate, glabrous; fruit hemispheric; drupelets 10-20, large, ovate, glabrous.
Type locality: Cartago, Costa Rica. Distribution: Costa Rica and Panama.

Rubus irasuensis Liebm. Vidensk. Meddel. 1852: 160. 1853
Stems perennial, slender, subterete, densely fuscous-pubescent, with short, dark-purple, glandular bristles, sparingly prickly with flat recurved prickles puberulent at their bases ; leaves digitate-quinate or the upper ternate; stipules linear, pubescent; petioles 4-5 cm. long, pubescent, glandular-setose and prickly; leaflets oval, acuminate at the apex, obtuse at the base, sharply double-serrate, dark-green above, puberulent above, densely fuscous-pubescent below, the midvein somewhat prickly; middle leaflet somewhat larger, 4-5 cm. long, its petiolule 1.5-2 cm. long; panicles 1-1.5 cm. long, terminal, and lateral, unarmed, with spreading branches; bracts linear-lanceolate, acute; sepals acute, ovate, reflexed; petals obovate, usually pinkish, longer than the sepals, often emarginate; receptacle cylindric; fruit 1-1.5 cm. long,
4
8-9 mm. thick; drupelets small, numerous, ovoid, pubescent at the apex.
Type locality: Volcano Irasu, Costa Rica. Distribution: Guatemala to Costa Rica.

Rubus pittieri Rydberg, sp. nov
Stem perennial, angled, villous-tomentose, armed with short, more or less recurved prickles, 3-5 mm. long, slightly if at all compressed; leaves quinate or on the upper part ternate; stipules subulate, 8-10 mm. long; petioles, petiolules, and midveins villous-tomentose and more or less prickly; petioles 5-10 cm. long; leaflets firm, oval to elliptic-lanceolate, 5-10 cm. long, acuminate at the apex, acute, rounded or subcordate at the base, closely and sharply serrate with irregular or double, lanceolate teeth, pilose above, densely villous, almost velutinous beneath; lateral veins rather prominent on the lower surface, 12-15 on each side; inflorescence dense, leafy-bracted, densely shaggy-velutinous, as well as somewhat glandular and somewhat prickly; flowers numerous; sepals ovate, apiculate, about 6 mm. long, tomentose on both sides; petals white, 7-8 mm. long, oval; fruit small, globose, purple; drupelets 12-20; putamen about 3 mm. long, strongly reticulate.
Type collected on the paramos of the Abejonal, Costa Rica, May 4, 1890, Pittier 2281 (herb. John Donnell Smith).
Distribution: Known only from the type locality; there collected also by Tonduz.

Rubus pittieri is an uncommon Central American species of brambles in the rose family. It has been found only in Costa Rica.

Rubus pittieri is a perennial with curved prickles. Leaves are compound with 3 or 5 leaflets. Flowers are white. Fruits are purple.