ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS. YOY 
Collected by E. W. Nelson on Mount Mohinora, southwest Chihuahua, altitude 
2,550 meters, September 1, 1898 (no. 4870). It was collected along with species of 
Zygadenus, Ligusticum, Washingtonia (Osmorrhiza), ete. 
It is very unlike the other Mexican currants, being perhaps more closely related 
to the &. riscosissiinum of the United States. 
Ribes kunthii Berland. Mem. Soc. Phys. Geney. II. 3°: 60. 1826. 
Ribes multiflorum H. B. 1K. Noy. Gen, & Sp. 6: 60. 1823, not Willd. nor Kit. 
Ribes mexicanum Spreng. Syst. 4: Cur. Post. 100. 1827. 
Ribes affine II. B. K. Nov. Gen. & Sp. 6: 60, 1823. 
A rather large spreading bush, 1 to 3 meters high, unarmed; leaves ovate in out- 
line, extremely variable in size, either clustered near the top of stunted branches or 
single and distant, then larger, on the new branches; blade 1 to 6 em. long, mostly 
3-lobed, sometimes somewhat 5-lobed, usually acute but sometimes obtusish, slightly 
pubescent becoming nearly glabrate above, pale and somewhat pubescent especially 
along the veins beneath, doubly serrate; petioles slender; stipules ciliate-glandular; 
racemes usually drooping, 6 to 12-flowered; bracts pubescent and glandular, longer 
than the hairy pedicels; ovary glabrous; calyx tube 2 to 3 mm. long, slightly pubes- 
cent without; sepals somewhat longer than the tube (3 to 4mm. long) somewhat 
purplish; petals minute (1.5 mm. long), nearly orbicular; fruit smooth, bluish black, 
small, rather dry. 
Type collected ‘‘prope Moran’’ in the State of Hidalgo. 
Specimens examined: 
State of Hidalgo: Sierra de Pachuca, altitude 2,700 to 2,900 meters, C. G. Pringle, 
July 17, 1898 (no. 6904) and February 20, 1899 (no, 6996); J. N. Rose, July 
21 and 22, 1901 (no. 5557). 
Real del Monte, Rose and Hough, June 2, 1899 (no, 4482). 
This species is nearest R. rugosum but has less pubescence, and has the leaves less 
rugose and more strongly and sharply lobed, the flowers smaller and purplish, and 
the sepals longer than the calyx tube. 
Humboldt collected near Moran, near the City of Pachuca, Hidalgo, two species of 
Ribes which were described as 2. multiflorwm and R, affine. In 1899 and again in 
1901 and 1903 I visited the mountains about Pachuca with the hope of re-collecting 
these two species. I found, however, but one species, which was quite common on 
the mountain ranges both on the east and west of Pachuca. This one shows con- 
siderable variation in its foliage and inflorescence and this led me at first to the con- 
clusion that Humboldt had obtained but one species, which seemed confirmed by 
Kunth’s own doubt as to whether he had more than one species before him. In 
spite of my failure to find a second species 1 am now inclined to believe that Hum- 
boldt had two distinet species. 
Hemsley in the Biologia uses for them the names PR. mudtiflorum and R. affine, 
while the Kew Index calls them R. kunthii and BR, campanulatum. In the first coup- 
let RK. multifiorum is a homonym, as also 2. campanulatiun in the second, so that the 
proper names for these species, if there be two, are A. hunthti and FR. affine, as above. 
Ribes dugesii Greenman, Proc. Am. Acad. 89: 78. 1908, 
Type locality: Mountains of Santa Rosa near City of Guanajuata, 
Ribes ciliatum H.& B.in Roem. & Schult. Syst. 5: 500, 1819. 
Ribes jorullense HW. B. K. Nov. Gen, & Sp.6: 61. 1825, 
Forming large bushes 3 to 5 meters high; stems 7 to 13cm. in diameter; bark on old 
branches dark, on new branches light brown or sometimes reddish, softly pubescent 
and slightly glandular but on vigorous shoots bearing numerous stout glandular hairs; 
leaves either clustered at the ends of short spurs orscattered along the sterile shoots, 
somewhat variable in size, 2 to 8 em. long by 3 to 9 em. broad, 8 to 5-lobed, the lobes 
ovate, acute, doubly serrate, the upper surface somewhat glossy, glabrate or with 
