OF ARTS AND SCIENCES. 293 



Cotyledon Lingula. Much like the last : leaves oblong, acute, 



2 or 3 inches long by an inch broad : stems 1 ^ 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. 



(Enothera ambigda. 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 CE. 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 tenuifoltum. 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 L. Jilicmum, and fruit very different. 



Peucedandm Geyeri. 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. farinosum, 

 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 

 vittae (3 or 4 in each interval) and 4 on the commissure. It ranges 



