SUPPLEMENT TO THE FLORA OF" MONTANA. 91 



from this species by its low, subcaulescent habit, shorter leaves, the 

 wider, obtuse bracts of the involucels, smaller heads, smaller, dark 

 purple flowers, shorter mericarps with fewer oil-tubes in the inter- 

 vals and its alpine situation. 



Mt. Hyalite, Gallatin Co., 10,000 ft. alt., Aug. I, 1902; Black Butte, 

 Tobacco Root Range, 10,000 ft. alt., Aug. n, 1902; Bridger Mts. 

 9,000 ft. alt., Aug. 29, W. W. Jones. [PLATE III.J 



Carum montanum, n. sp. 



Roots fusiform, fascicled, fleshy: stems erect, 8-12 dm. high, 

 glabrous and channeled: leaves with wide inflated, clasping petioles, 

 2-3 dm. long, odd-pinnate with about 5 pairs of leaflets ; leaflets ir- 

 regularly cleft into several lanceolate or oblanceolate, acuminate di- 

 \ergent divisions, 4-8 cm. long and 5-10 mm. wide; uppermost usual- 

 ly simply pinnate with linear-lanceolate leaflets; umbels 13-17 rayed; 

 primary rays 2-4^ cm. long, secondary 4-8 mm. ; involucre of 2-4 

 filiform bracts, 5-10 mm. long; involucels of short linear bractlets, 

 as in C. Gairdneri: petals prominent and sepals evident, as long as 

 the stylopodium, the latter depressed conical and style I mm. long: 

 the oil-tubes large and solitary in the intervals: fragrant. 



Distinguished from C. Gairdneri, Gray by its larger size, larger 

 leaves and pinnately incised leaflets with lanceolate or oblanceolate 

 segments, its larger fruit and longer styles. Near C. Oreganum f 

 Wats, from which it is separated by its long, lanceolate incised leaf- 

 lets, short linear bractlets of the involucels and its larger size. 



In low thickets, Bozeman, Aug. n, 1898; Flathead-Brackett Cr.> 



Divide, Aug. 18, 1899; Hills of Lapwai, Clearwater Valley, Idaho, 



June 18, 1895, L. F. Henderson, 4868 (Gray Herb.). [PLATE IV]. 



Conioselinum scopulorum, Coult. & Rose ; Ligusticum scopulornm. 

 Gray. Borax, Coeur D'Alene Mts., 5500 ft., Aug. 8, 1901, in low 

 ground. 



Cymopterus Parryi, Jones; Coulter & Rose, Cont. Nat. Herb. 7: 

 182. "Gallatin Co., Tweedy, May, 1888". 



Cymopterus tcrebinthinus, Rydberg, Flora, 292, is Pterixia thap- 

 soides, Nutt. 



Glycosma ambigua, Gray; Washingtonia ambigua, Coult. & Rose. 

 Broadwater swamp, Helena, June u, 1898, E. N. Brandegee. 



Osmbrrhisa divaricata, (Rydberg) ; Washingtonia divaricata, 

 Rydberg, Flora, 290, is 0. obtusa, Fernald (Wash- 

 ingtonia obtnsa, Coult. & Rose, Cont. Nat. Herb. 7:64). 



