UMBELLIFERJ2. (PARSLEY FAMILY.) 117 



10. GLYCOSMA, Xutt. 



Stylupodiura depressed : seed semiterete or angled, with rather a broad 

 sulcus. — Involucre and involucels wanting. 



1. G. OCCidentale, Xutt. Rather stout, 2 feet high or more, finely 

 puberulent throughout, excepting the inflorescence : leaves 2-ternate ; leaflets 

 oblong-lanceolate, serrate. — Torr. & Gray, Fl. i. 639. Myrrhis occidentalis, 

 Benth. & Hook. Head-waters of Snake and Yellowstone Rivers to Oregon 

 and California. 



11. LIGUSTICUM, L. Lovage. 



Calyx-teeth obsolete. Stylopodium usually conical ; margin of the disk 

 undulate. Fruit with a broad commissure. — Smooth perennials, usually 

 tall: leaves piunately or ternate and pinnately decompound: umbels many- 

 rayed, naked or involucrate. 



* Flowers white. 



1. L. apiifolium, Benth. & Hook. Stems 2 to 4 feet high, leafy or 

 naked, with 2 to 4 umbels on long peduncles : leaves pinnately decompound, 

 the segments incisely lobed ; cauline leaves ternate, upon a short dilated 

 sheath : fruit 2^ lines long, with a conical stylophore: seed with a central longi- 

 tudinal ridge on the concave face. — Probably the Conioselinum Canadense of 

 Hayd. Rep. 1872. Colorado and northward into Montana, but more abundant 

 westward. 



2. L. SCOpulorum, Gray. Very similar, but the fruit larger, 4 lines 

 long, more broadly winged and ovate, and the seed more depressed, almost reni- 

 form in section. — Proc. Am. Acad. vii. 347. Colorado, alpine and subalpiue. 



3. L. filieinum, Watson. Rather slender, l£ feet high: leaves broadly 

 triangular in outline, ternate, the divisions bipinnate, and the segments deeply pin- 

 natifd with linear acute lobes: stylophore obscure: seed obscurely ridged on the 

 back. — Loc. cit. xi. 140. L. apiifolium, of Bot. King's Exp. In the Wasatch 

 and Uinta Mountains and Wyoming. 



* * Flowers yellow. 



4. L. montanum, Benth. & Hook. Very smooth : stem slender, 1 to 2 

 feet high : leaves 2-ternately divided ; leaflets cuneiform, trifid ; lobes oblong 

 or lanceolate, sometimes linear, entire, or the larger ones incised. — Colorado 

 and Arizona. 



12. THASPIUM, Nutt Meadow Parsnip 



Calyx-teeth obsolete or short. — Perennial herbs, with 1 to 2-ternately 

 divided leaves (or the root-leaves simple) : umbels with no involucre and 

 minute few-leaved involucels. 



1. T. trifoliatum, Gray. Glabrous, stems somewhat branched : root- 

 leaves or some of them round and heart-shaped ; stem-leaves simply ternate 

 or quinate, or 3-parted ; the divisions or leaflets ovate-lanceolate or roundish, 

 mostly abrupt or heart-shaped at the base, crenately toothed : flowers deep 

 yellow. — Manual, 195. Colorado and northward into Montana, and east 

 ward to the Atlantic States. 



