* 
NEW OR NOTEWORTHY SPECIES. 99 
CRATHGUS SALIGNA. Slender tree 10 to 18 feet high, with 
rather few branches and long willowy more or less drooping 
branchlets: leaves firm, glabrous, those of sterile branches 
rhombic-lanceolate, acuminate at both ends, crenate-toothed 
in the middle, about 2 inches long including the very short 
petiole, those of the fruiting twigs oblong-ovate, mostly ob- 
tuse, rather evenly crenulate except near the base; stipules 
lunate; thorns few, slender, very slightly curved: fruits in 
rather ample corymbs, small, black but distinetly glaucous, 
the pulp greenish, dry, mealy and insipid. 
Plentiful along the lower Cimarron River, Colorado, in 
ripe fruit 30 Aug., 1896. Allied to C. rivularis, but strik- 
ingly distinct in habit as well as foliage. 
MENTZELIA DENSA. Perennial, low, compactly branched 
from the base, seldom a foot high, the whole plant forming 
an almost hemispherical tuft; the numerous whiteand hispid 
branches and branchlets short-jointed and flexuous: leaves 
small, sinuate-pinnatifid, very hispid: flowers solitary or in 
threes at the ends of the branchlets, golden-yellow, about 
lj inches broad; the 10 to 15 petals subequal, spatulate- 
lanceolate, acute: mature capsule oblong, striate, the linear- 
subulate teeth about half the length of the body: seeds 
round-ovoid, thin and flat, strongly winged. 
Common in the Cafion of the Arkansas in southern Colo- 
rado, and elsewhere among the foothills; apparently referred 
to M. multiflora by some, though that is a biennial of alto- 
gether different mode of growthy and with larger straw- 
colored flowers. 
MENTZELIA LUTEA. Stoutish biennial 2 or 3 feet high, 
narrowly and almost thyrsoidly paniculate from below the 
middle; plants of the first season with a very long slender- 
fusiform fleshy root, and a dense tuft of sinuate-pinnatifid 
succulent leaves: cauline leaves large, sinüate-dentate: 
EG" ae oda cn, BA 
Prrronta, vol. III. - Pages 99-106 issued 16 Nov., 1896. — 
