OF ARTS AND SCIENCES. 293 
CotyLepon Lineuta. Much like the last: leaves oblong, acute, 
2 or 3 inches long by an inch broad: stems 14 to 2 feet long, the 
branches of the cyme less spreading and short: pedicels very short 
(a line or less): sepals narrower and longer: carpels 3 lines long, 
somewhat spreading, with straight styles. — From the same region 
and collector. Described from living specimens, as also the last. 
CENOTHERA AMBIGUA. Annual, with a short leafy stem and send- 
ing out naked horizontal branches from the base, the epidermis white 
and smooth: leaves oblanceolate, sinuately toothed or nearly entire, 
3 or 4 inches long, with short appressed pubescence, as also the in- 
florescence: flowers nodding in the bud, white or cream-color becom- 
ing purplish; tips of the calyx free; petals 9 to 15 lines long: 
capsules linear, thickest toward the base, spreading or reflexed, an 
inch long or more: seeds linear, smooth, a line long.— Near St. 
George, S. Utah; Dr. E. Palmer (n. 162, 1877); also Dr. Parry in 
1874, distributed as @. albicaulis, var. decumbens. It is closely allied 
to that species, but Dr. Palmer’s specimens show it to be clearly 
distinct in habit, foliage and duration; the seed is also longer and 
narrower. 
LiGusTICUM TENUIFOLIUM. Stem slender, 12 to 18 inches high, 
naked above the base or with a single sessile leaf, and bearing a single 
naked umbel with rarely a lateral sterile one: leaves small (2 or 3 
inches long), ternate and pinnately decompound, finely dissected with 
laciniately divided leaflets, the ultimate segments linear, a line or two 
long: rays few (7 to 11), an inch long or less: involucels of 1 or 2 
narrowly linear bracts: fruit (scarcely mature) oblong, 2 lines long, 
narrowly ribbed, with narrow disk and conical styliphore: seed con- 
cavo-convex. — Mountains of Colorado ; Hall & Harbour (n. 216, in 
part); Wolf & Rothrock, n. 721. Leaves much more finely divided 
even than in ZL. filicinum, and fruit very different. 
Prvucepanum Geyer. Low and acaulescent or nearly so, gla- 
brous ; root moniliform with 2 or 3 small globose tubers (a half-inch 
thick or less) : leaves ternate-quinate, the leaflets linear, 4 to 9 lines 
long: flowers white, in small unequal-rayed umbels: involucel of 
several linear acuminate bracts: mature fruit unknown. — Collected 
by Geyer (n. 458), and on the Clear Water, Idaho, by Rev. Mr. 
Spalding, who gives the Indian name “ Lakaptat.” — P. FarrNosuM, 
Geyer, is a similar dwarf white-flowered species, having a solitary 
small globose tuber with frequent clusters of fine rootlets over its 
surface: fruit oblong-elliptic, 2 or 3 lines long, with numerous dorsal 
vitte (3 or 4 in each interval) and 4 on the commissure. It ranges 
