VOL Il. | New Plants. 15 
cles about as long as the leaves and not elongating in fruit, flat on 
the ground; flowers very small, dirty white, in dense heads like the 
heads of mimosa flowers, 34 inch broad in flower and 1% to 2 inches 
broad in fruit, involucre none, top of the peduncle enlarged into a 
disk from which the innumerable flowers arise; fruit with generally 
thick spongy wings, almost orbicular to obovate, truncate at the top, 
4 lines long and 3 wide, wings a little over a line broad, all three 
equally developed, oil tubes 8 or more on the commissure, and 4 to 
7 in the intervals, fruit hairy at the top, and the triangular calyx 
lobes green and starlike on the top of the fruit. 
June 10, 1890, on the mesas just south of the Little Colorado, 
northern Arizona, growing in gravel. This is to be compared only 
with C. globosus and corrugatus, but is very different from either in 
the leaves and fruit as well as the size. 
LAPHAMIA GILENSIS. Shrubby at base, 6 to 1o inches high, 
glabrous; simple, striate stems tufted and erect; leaves distant, 
lower opposite, long petioled, petiole margined 1 inch long; blade 
34 inch long, ovate or broadly ovate and with a cuneate base, 3- 
nerved from the base, small, lowest entire or coarsely dentate, or 
three-lobed and coarsely dentate; upper leaves much reduced, al- 
ternate, always lobed or dentate and more or less glutinous; heads 
single, terminating the slender branches; involucral scales ovate or 
lanceolate, outer ones acute, all nerved and glandular; heads many 
flowered; rays yellow present or absent, about 4 longer than the 
disk flowers; akenes with one slender upwardly toothed bristle; 
hairs on the sides of the akene thick and bidentate at the tip. 
May 23, 1890, at Putnam’s Ranch, near the Gila River, growing 
among rocks. This is allied to LZ. /anceolata Gray. 
ERIOGONUM FLEXUM. Annual, intricately and widely branched 
from the base and upwards, 1 to 2 feet high and branches a foot or 
more long and horizontal; leaves fleshy, yellowish- green and gla- 
brous except a few scattered hairs and some scurf; petioles glandu- 
lar and hairy, 1 inch or less long; blade nearly round, g lines long, 
obtuse, cuneate at base; stem leaves generally in threes at the nodes, 
- jinear-oblanceolate, acute, lower 6 lines long, upper gradually re- 
_ duced but never minute, glabrous except at base where there is a 
glandular and hairy pubescence; lower part of the stem and nodes 
glandular and sparsely hairy, otherwise glabrous; pedicels ascend- 
ing from every node of the repeatedly dichotomous branches, 1 to 2 
