WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 301 
in every respect, there is practically no doubt that the two are part of the same col- 
lection from near the type locality of P. argyrocalyx. Evidently some mistake was 
made in sending out the specimen which became the type of the new species, resulting 
in the mixing of labels. 
4. Philadelphus argenteus Rydb. N. Amer. FI. 22: 171. 1905. 
Type Locauity: Fort Huachuca, Arizona. 
Rance: Southeastern Arizona and southwestern New Mexico. 
New Mexico: Burro Mountains; Santa Rita; Animas Peak. 
62. GROSSULARIACEAE. Gooseberry Family. 
Erect or spreading shrubs, often with bristly or spiny stems; leaves alternate, 
simple, petiolate, broadly ovate to rotund, usually palmately veined, more or less 
jobed and toothed; inflorescence terminal on short, lateral, sometimes leafless branches, 
racemose, or the raceme reduced to a single flower; flowers regular, perfect (rarely 
unisexual); hypanthium elongated, short, or obsolete; sepals, petals, and stamens 5, 
alternate; ovary l-celled; fruit a berry. 
KEY TO THE GENERA. 
Stems without spines or bristles (except in Rk. montigenum) ; 
pedicels jointed beneath the ovary; fruit breaking 
from the pedicel..........-------2.----- 22 e-eee- 1. Rises (p. 301). 
Stems with nodal spines, with or without extranodal 
bristles; pedicels not jointed beneath the ovary; 
fruit not breaking from the pedicels............-.. 2. GROSSULARIA (p. 303). 
1. RIBES L. Currant. 
Unarmed shrubs (R. montigenum spiny and bristly) with palmately veined, mostly 
lobed leaves; flowers in several-flowered racemes; pedicels jointed beneath the ovary; 
ovary not spiny, sometimes glandular; hypanthium tubular to campanulate, sometimes 
obsolete; fruit breaking from the pedicel. 
KEY TO THE SPECIES. 
Stems armed with spines; leaves pubescent or glandular-hairy; 
berries bright red........--------- 2-22 - eee eee eee eee eee 1. R. montigenum. 
Stems unarmed; leaves pubescent or glabrous; berries red or black. 
Hypanthium obsolete, the sepals slightly united at the base... 2. R. coloradense. 
Hypanthium evident (very short in R. wol/fi). 
Anthers with a conspicuous cup-shaped apical gland. 
Hypanthium 3 or 4 times as long as broad; fruit red.. 3. R, inebrians. 
Hypanthium less than twice as long as broad; fruit 
black. ......-- 2-2-2 ee ce eee eee eee ce eee 4, R. mescalerium. 
Anthers with at most a mere callus at the apex. 
Hypanthium smooth, 3 or more times as long as thick; 
leaves involute in vernation..........-.+.+++-- 5. R. aureum. 
Hypanthium hairy, less than 3 times as long as broad; 
leaves plicate in vernation. 
Leaves with amber-colored glands on both sur- 
faces; hypanthium and calyx together 10 
mm. long........--202 2-2 e ee eee ee ee eee eee 6. R. americanum. 
Leaves without glands on the upper surface; 
hypanthium and calyx together 5 mm. long 
0) ae Co . 7, R. wolfii, 
