ROSE——-MEXICAN AND CENTRAL AMERICAN PLANTS. 295 
Echeveria walpoleana Rose, sp. nov. 
Acaulescent or becoming in age shortly caulescent; leaves forming a dense rosette, 
at first pale green with reddish margins but becoming deeply tinged with red 
throughout, thickish, rounded on the back, boat-shaped above, sharply acute, 6 to 8 
em. long, 2 to 2.5 em. broad, glabrous; flowering stem 30 to 40 em. long, its leaves 
thickish, acute; inflorescence two-branched, each branch a secund raceme of 8 to 10 
flowers; pedicels very short; sepals spreading, ovate, acute, green; corolia about 
14 mm. long, deeply orange-colored, the fobes erect, very thick, triangular in cross 
section, acute; stamens about half the length of the corolla lobes and attached near 
the top of the corolla tube; carpels erect. 
Collected by Dr. KE. Palmer near Las Canoas, San Luis Potosi, November, 1903, and 
flowered in Washington in August, 1903 (Rose’s no, 506, Walpole’s drawing no. 116 
ined. ). 
This species is named for the talented botanical artist Frederick A. Walpole, who 
died at Santa Barbara, Cal., May 11, 1904, at the age of 48. Mr. Walpole was not 
only anartist of great promise, but was no mean botanist. In 1896 he was appointed 
artist in the Department of Agriculture, where he was employed continuously until 
his death, excepting one year when he served as artist of this Division. He wasa 
prodigious worker and had prepared more than 1,000 botanical drawings, most of 
which are unpublished. He had prepared for the writer 125 drawings, many of them 
in color, and about 200 lead-pencil sketches. Giood examples of his work may be 
found in this pubtication, in the Proceedings of the Washington Academy of Sciences, 
and in the narrative of the Harriman Alaskan expedition, 
GROSSULARIACEAE. 
A SYNOPSIS OF THE MEXICAN SPECIES OF RIBES. « 
No synopsis of the Mexican species of Ribes has ever been published, 
but a bare list was given by Mr. Hemsley in the Biologia in 1880. Only 
6 species were mentioned, one of these being without specific name. 
Of these 5 named species 4+ had been collected by Humboldt. In 
this list was not included the old 22. fortvoswm from Lower California. 
Since Mr. Hemsley’s list appeared the following species have been pub- 
lished: 22. wthurn/folfim Gray in L882, 2. quercetorum Greene in 1885, 
and /2. duges¢/ Greenman in 1903, If to these we add the 7 species pro- 
posed here, we have a total of 16 species. Two of these, viz, R. quer 
cetorum and ff. long forum, ave United States species extending just 
into the northern border of Mexico. The two Lower Californian 
species, 2. ahurnifolinm and 2. tortuosuim, may yet be found in south- 
ern California, although it is doubtful. A. nelsoni and R. ceriferum 
should be looked for in the mountain ranges of southern Arizona. A 
species has been found in Costa Rica, but its identification is uncertain. 
The facilities for preparing this synopsis have been the very best. 
I have had before me the largest series of Mexican Ribes ever brought 
together. In the National Herbarium we have 53 sheets, and in addi- 
tion to these I have examined 29 sheets from the Gray Herbarium, 
including the types of 2. ofhurnsfoliin and BR. duges/i. I have also 
seen the type of 2. qgucreetormim in Doctor Greene’s herbarium and 
examined material of 22. for/vosui from San Quintin, its type locality. 
“For an extension of this paper see p, 338, 
