UMBELLIFEK^:. (PARSLEY FAMILY.) 117 



10. GLYCOSMA, Nutt. 



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

 sulcus. Involucre and involucels wanting. 



1. G. OCCidentale, Nutt. 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 pinnately 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 iucisely lobed ; cauline leaves ternate, upon a short dilated 

 sheath : fruit 1\ 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 subalpine. 



3. L. filicinum, Watson. Rather slender, 1^ feet high: leaves broadly 

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

 natifid with linear acute lobes : sti/lophore obscure : seed obscurely ridged on the 

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

 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. TH AS PI TIM, 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. 



