106 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
GROSSULARIACEAE. 
A NEW SPECIES OF RIBES FROM THE VENEZUELAN ANDES. 
Ribes canescens Pittier, sp. nov. 
A shrub with erect stems, the young shoots more or less cano-pubescent. 
Leaves with petioles 1.5 to 2 cm. long, these white-tomentose; blades emargi- 
nate at the base, distinctly 3-lobate, about 3.5 cm. long and 4 cm. broad, mem- 
branous, glabrous above, whitish felted tomentose beneath, irregularly toothed 
on the margins, the median lobe larger, the teeth glandular-mucronate. 
Male racemes pendulous, 6 to 9 cm. long, the rachis slender, more or less 
tomentose, and covered with pedicellate glands. Bracts lanceolate, cano- 
pubescent, glandular on the margins, 6 to 7 mm. long; bractlets lanceolate, 
clasping at the base, pubescent, 3 to 3.5 mm. long. Flowers about 8 mm. long, 
reddish, the pedicels about 2 mm. long. Receptacle tomentellous, eglandular. 
Sepals lance-acuminate, about 3 mm. long, 1.5 mm. broad, dark-veined, minutely 
tomentose without, flat, erect. Petals obovate-spatulate, flat, glabrous, about 
2.5 mm. long, 1.2 mm. broad. Stamens slightly shorter than the petals, ap- 
parently erect, glabrous, the anthers yellow, ovoid. Ovary rudimentary, 
glabrous, conical; style bilobate. Female inflorescence not seen. 
Fruit not known. 
Type in the U. 8. National Herbarium, no. 703585, collected on the Paéramo 
de Piedras Blancas, Andes of Mérida, Venezuela, male flowers only, March 
27, 1915, by Dr. A. Jahn (no. 414). 
Janczewski’ cites from the same region a variety of Ribes andicola, with the 
leaves whitish-tomentose beneath. This can not be the above species, which 
belongs to the section with flat petals and differs besides in the absence of 
feathery bristles at the base of the leaves and in these being eglandular or 
nearly so and the sepals not ligulate. 
ROSACEAE. 
OLD AND NEW SPECIES OF OSTEOMELES. 
Qsteomeles cuneata (Lindl.) Decaisne, Nouv. Arch. Mus. Hist. Nat. Paris 10: 
184. 1874 FIGurE 44, 
Hesperomeles cuneata Lindl. Bot. Reg. 28: under pl. 1956. 1837. 
A low, procumbent, spinescent shrub, the younger 
branchlets minutely pilosulous. 
Leaves with petioles hardly over 1 mm. long; blades 
oblong-spatulate, long-cuneate at the base, rounded at the 
apex, often subtrilobate, 5 to 20 mm. long, 4 to 7 mm. 
broad, pilosulous or glabrescent on both faces, lustrous, 
. the veins brownish, immersed, and inconspicuous above, 
Fria. 44.—Leaf of Os- : : : 
teomeles cuneata. pale brownish green and brownish-reticulate beneath, the 
Natural size. From costa prominent at the base, the angle of the main veins 
U.8. Exploring Ex- very acute (about 15 degrees); margin serrulate on the 
pedition, no num- nner half of the blade, the teeth each bearing a caducous 
ber, in U. S. Na- 
tional Herbarium. gland. 
Corymbs equal to or shorter than the branchlets. Bracts 
acicular or spatulate-lanceolate, very narrow, villosulous, up to 4 mm. long. 
Pedicels cano-pubescent, 1 to 2 mm. long. Flowers 5 mm. long. Receptacle 
subglobose, more or less grayish-hairy without, densely white-tomentose on 
*Mém. Soc. Phys. Hist. Nat. Genéve 35: 411. 1907. 
