262 UMBELLIFER/K. Osmonhiza. 



sulcate on the iaco or with margins contiguous and enclosing a central cavity. 



Carpophore i-clel't. — Perennials, witli thick aromatic roots, more or less hirsute ; 



leaves large, 2-3-ternately compound; involucre small or none; umbels fuw, few- 

 rayed and few-fruited ; lluwers wliit(j. 



A genus of liiilf ii doziii species. Tlio two species of Eastern America extend to Asia, wliiln 

 tlie two of California are conlined to the western coast. 



1. O. nuda, Torrey. Eather slender, 2 or 3 feet high, more or less pubescent 

 with spreading hairs : leaves twice ternate ; leatiels ovate, an inch or two long, 

 acute or obtusisli, rather deeply cleft and toothed: umbel long-peduncled, 3-5- 

 rayed, naked or witli small caducous involucre and involucels ; rays 2 or 3 inches 

 long : pedicels 3 to i) lines long : fruit slender, G or 7 lines long and a line broad or 

 less, acutely ribbed ; the style and «tyh)podium very short ; the attenuated base 2 

 lines long : seed terete, sulcate on the inner face. — Pacif. li. Pep. iv. 93. 0. bre- 

 visti/lls, Hook. PI. i. 272 in part, t. U7. 



In the mountains from 8an Diego ()o. to Alaska and eastward to Colorado. It is doubtful if 

 the allied O. brcvi.slylis extends so far west as the Rocky Mountiiins. That s[)ecies is distinguished 

 by its larger and more acuminate leaflets, involucrate umbels, and larger fruit, and the seed more 

 angular and involute. 



2. O. brachypoda, Torrey. About a foot high: leaves 2-3-ternato; leadets 

 ovate, an inch long or li;.s.s, acute, laciniuLely lobeil and tootiied : rays rather shorter; 

 involucre of one or few and involucels of \ to linear-acuminate bracts, the latter 

 equalling the llowcrs ; pedicels very short : fruit strongly and acutely ribbed, G 

 lines long by 1^ broad, the stout base but a line long ; stylopodium depressed and 

 styles very short : seed strongly 5-angled, the margins contiguous and closing the 

 deep central sulcus. — Pacif. P.. Pep. iv. 93. 



A strongly marked species, seemingly confined to Central California ; Nevada Co. {Bigelow, 

 Prattcn), Santa Clara Valley (Goudulc), and Monterey, Parri). 



15. GLYCOSMA, Nutt. 



Characters as in Osmorrhlza except as regards the fruit, which is linear but not 

 attenuate to a narrow base, and usually glabrous ; stylopodium depressed and styles 

 very short : seed sennterete or angled, witli a rather broad sulcus on the face. In- 

 volucre and involucels wanting. 



A group of plants of Western Ameiica, moi'e nearly allied to Osmnrrhiza than to Myrrhis of 

 the Old World, to whicii it is referred by IJcnthani k Hooker. The simcies are very much alike. 



1. Qt. OCCidentale, Nutt. Rather stout, 2 feet high or more, linely puberulent 

 throughout, exce]»ting the inllorescenco: leaves 2-ternate, the leallets oblongdanceo- 

 late, H to 2| inches long, serrate : rays somewhat erect ; pedicels 2 to 4 lines long, 

 exceeding the sterile llowers : fruit 7 or 8 lines long, rather acutely angled. — Torr. 

 & Gray, Fl. i. 639 ; Gray, Proc. Am. Acad. viii. 38G. Myrrhis occidentcdis, Benth. 

 & Hook. Gen. PI. i. 897 ; Gray, Proc. Am. Acad. vii. 346. 



In the mountains from Oregon to Mono Pass, and eastward to the Wahsatch ; S. Utah, Parry. 



2. G-. ambiguum, Gray. Glabrous, or somewhat hairy near the nodes: leaflets 

 rather smaller and more deeply gash-toothed, an inch or two long, ovate-oblong, 

 acute : rays more spreading ; pedicels a line or two long, not exceeding the barren 

 flowers : fruit 6 or 7 lines long, rarely bristly on the ribs at base. — Proc. Am. 

 Acad. viii. 386. 



Collected by KeUotjr/ & Harford in shady woods at Cahto, California, and by Hall at the foot of 

 the Cascade Mountains, Oregon. 



3. G-. Bolanderi, G.ray. iStout, .somewhat puberulent : leaflets ovate, acute, 

 rather deeply gash-tuotlicd and lobcil : rays spreading ; pedicels 1 or 2 lines long, 



