300 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
some fine pubescence towards the base and with scattered glandular hairs, beneath 
very pale, rugose and more pubescent than aboye, deeply cordate at base; racemes 
rather short and compact, 4 to 8 cm. long, many-flowered, nodding; bracts large, 
longer than the pedicels, pubescent both with soft and glandular hairs; bractlets 
minute, deciduous; pedicels pilose, 4 to 7 mm. long; calyx 8 to 9mm. long, greenish 
White, the lobes acute, shorter than the tube, softly pubescent without, persistent 
on the fruit; ovary and fruit smooth, the latter shining, rather dry. 
Common on all the high mountains of Mexico ranging from 8,000 to 3,900 meters. 
Speciinens examined: 
Orizaba: Rose and Hay, July 25 and 26, 1901 (no. 6375). 
Ixtaccihuatl: ©. A. Purpus, January, 1908 (no, 53), 
Popocatepetl: Rose and Hay, August 7 and 8, 1901 (no. 6009), 
Toluca: C.G. Pringle, September 6, 1892 (no. 4253); Rose and Painter, October 
15, 1903 (no. 7934). 
Tancitaro: E.W. Nelson, February 24, 1904 (no. 6896), 
Colima: M. EK. Jones, July 18, 1892 (no. 10). 
Ribes rugosum Coville & Rose, sp. nov. PLare LXNVI, 
A large bush, unarmed; leaves orbicular, 2.5 to 3.5 em. in diameter, 3-lobed, the 
lobes obtuse, doubly crenate, above glabrous, beneath pale, somewhat rugose and 
pubescent; petioles shorter than the blade, pubescent; stipules broad, usually ciliate 
but nearly hidden by the large bud seales; racemes drooping, 7 to 12-flowered; 
bracts longer than the pedicels; ovary 2 mim. long, glabrous; calyx tube broad, -£ tm. 
long, pubescent avithout; sepals greenish, 2 to 3 min. long, oblong, rounded and 
apiculate; petals nearly orbicular, scant 2mm. long, narrowed at base into a short 
claw; style 2 or 38-lobed, scarcely exserted. 
Collected by Bourgeau near Santa Fé in the Valley of Mexico in July, 1865-66 
(no. 302) and at the same locality by Mr. C. G. Pringle, 1899 (no. 6999, type). 
EXPLANATION OF PLATE LXVI.—Flowering branch, natural size. 
Ribes orizabae Rose, sp. nov. For description see p. 339, 
Ribes grande Rose, sp. nov. For description see p. 339. 
MIMOSACEAE. 
A NEW SPECIES AND A NEW NAME. 
Neptunia microcarpa Rose, sp. nov. 
A delicate plant with perennial and much branehed base, glabrous and smooth 
except fora few glandular protuberances; stem 30 to 50 em. long; leaves bright green, 
glabrous or sometimes with a few short hairs on rachis and leaflets: stipules at first, 
green, becoming brown and. scarious, broadly ovate. acuminate, 5 mm. long; pinnse 
3 pairs or occasionally 4; leaflets 7 to 13. pairs, lincar-oblong, 4 to 5 mm. long, 
obtuse; peduncles slender 4 to 6 em. long; heads globular, small, few-flowered: 
bracts. subtending the flowers persistent, ovate, acuminate; calyx lobes small, 
slightly pubescent on the margin; corolla greenish: stamens 10, in the lower flowers 
petaloid; ovary glabrous; pod subsessile, orbicular to shortly oblong, .8 to 1.5 em. 
long, 8 mm. broad, 2 to 4-seeded. 
Collected by Mr, C. G. Pringle near Guadalajara, Jaliseo in 1902 (no. 8626). 
Very different from NV. lutea in its pods, heads, and pubescence, 
Acacia sericocarpa Rose. 
Acacia ambigua Rose, Contr. Nat. Herb, 8: 31. 1905, not Hoffmge. 1826. 
Miss Mary A. Day has called my attention to the fact that my AL aimbigua isa 
homonym. 
