334 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
2 to3 mm. long, ovate-acuminate, serrulate on the margin; bractlets very slender, 
like the bracts in size and shape, nardly extending beyond the flowers; sepals ovate, 
acute; styles slender, a third longer than 
the sepals; fruit about 3 mm. long, covered 
with small ovate overlapping scales. 
Collected by C. G. Pringle in alkaline 
meadows, Hacienda de Angostura, San 
Luis Potosi, July 10, 1891 (no, 3759). Type 
in U. 8. National Herbarium (no. 461279). 
It was distributed as 4. deppeanum, from 
which it differs greatly. 
Eryngium puberulentum Hemsley & Rose, sp. nov. 
Perennial from a slender rootstock; stems slender, 90 to 100 em. high, nearly 
simple, rather pale; basal and lower stem leaves long and narrow (60 cm. long by 
4 to 8mm. broad), the margin bearing paired unequal setie closely set in the lower 
part, more distinct above; inflorescence a simple or somewhat compounded umbel; 
rays (peduncles) usually slender, about 3 cm. long; heads globular, 5 to 6mm. in 
diameter; bracts 5 or 6, ovate, acute, small, 3 min. long; bractlets similar, puberu- 
lent; sepals broadly ovate, mucronate; styles elongated. 
Collected by C. G. Pringle in the Sierra Madre above Monterey, Nuevo Leon, 
August, 1903 (no, 11461, type) and by Dr. E. Palmer in the Caracol Mountains 
southeast of Moncloya in 1880. Doctor Palmer’s plant was distributed as ‘‘ KE. 
yuccaefolinm var 1? 
Fig. 19.—Eryngium pringlet. 
under which name it has ever since rested. 
Eryngium stenolobum Hemsley, Hook. Ic. 28: under p/. 2766. 1903, 
Collected by Rose and Hough near Cuernavaca, Morelos, in 1899 (no. 4393). 
Type specimen in U.S. National Herbarium (no. 346355). 
Eryngium watsoni Coulter & Rose, sp. nov. 
Rather slender perennials, very pale but not glaucous, 30 to 40 em. high, some- 
what branching above; basal and lower stem leaves elongated, linear, 60 to 70 em. 
long, 10 to 12 mm. broad, parallel-veined, banded down the center, the margin bear- 
ing short weak spines; inflorescence a compound umbel or an umbel-like cluster; 
heads oblong in outline, 12 mm. long; bracts few, linear-ovate, about 7 mm. long, 
usually entire, pungent, strongly 3-nerved; bracts similar but smaller; sepals ovate, 
acute; styles slender, 3 times as long as the sepals. 
Collected by C. G. Pringle in mountains near Lake Chapala, Jalisco, Oetober 18, 
1895 (no, 6197). Type specimen in U. 8. National Herbarium (no, 244270). 
This species although long ago recognized as new has remained unpublished. = In 
the meantime several other species have been confused with it. Mr. W. B. Hemsley 
suggests a relationship with /. longifolium Cav. 
FIVE NEW SPECIES OF PRIONOSCIADIUM. 
Prionosciadium diversifolium Rose, sp. nov. 
Perennial, 1 to 2 meters high, loosely branching, glabrous and somewhat glaucous 
below; leaves ternately divided; rachis winged, either entire or toothed; leaflets 
ovate, acute or obtuse, 8 em. or less long, sharply serrate, glabrous except a little 
scabrosity along the veins; peduncle short (8 to 6 em. long), slender; involucre none; 
involucel bractlets few, linear, about the length of the fruiting pedicels; rays about 
equal, 2 cm. long, scabrous; pedicels 2 or 3 mm. long; fruit oblong, 10 mm. long, 
glabrous. 
Collected by Mr. C. G. Pringle on mountains above Iguala, Guerrero, September 
14, 1900 (no, 8420). 
