644 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



1. Osmorhiza brachypoda Torr. in Durand, Acad. Nat. Sci. Phila. 



Jour. ser. 2, 3: 89. 1855. 

 Mazatzal Mountains, Gila County {Harrison 7815, 7830, Collom 

 866) . Central Arizona and California. 



2. Osmorhiza nuda Torr., U. S. Rpt. Expl. Miss. Pacif. 4: 93. 1857. 



Osmorhiza divaricata Blankinship, Mont. Agr. Col. Sci. Studies 

 Bot. 1: 91. 1905. 



Oak Creek, Coconino or Yavapai County (Fulton 9678), Pinaleno 

 Mountains, Graham County (Peebles et al. 4483), Santa Catalina 

 Mountains, Pima County, 7,500 feet (Peebles et al. 2581). Quebec 

 and New Hampshire to British Columbia, Arizona, and California. 



3. Osmorhiza obtusa (Coult. and Rose) Fernald, Rhodora 4: 154. 



1902. 



Washingtonia obtusa Coult. and Rose, Contrib. U. S. Natl. 

 Herbarium 7: 64. 1900. 



Baldy Peak, Apache County (Peebles and Smith 12507), San Fran- 

 cisco Peaks (MacDougal 397, Leiberg 5707, Tourney 39), Mormon Lake, 

 Coconino County (MacDougal 101), 7,000 to 10,000 feet. Labrador 

 and Newfoundland to the Rocky Mountains, south to northern 

 Arizona. 



5. CAUCALIS 



Plants annual, caulescent, branching, hispid; leaves pinnately de- 

 compound, the segments short, linear to filiform; peduncles axillary 

 and terminal; umbels compound or occasionally simple by reduction; 

 involucre of foliaceous bracts shorter than the rays; bractlets of the 

 involucel foliaceous, entire or pinnately divided, mostly shorter than 

 the fruits; calyx teeth prominent; corolla white; stylopodium conic; 

 fruit ovate-oblong, 3 to 7 mm. long, laterally compressed, the carpels 

 with 5 filiform bristly prominent ribs and 4 prominent winged sec- 

 ondary ribs bearing hooked bristles, the oil tubes solitary in the 

 intervals, 2 on the commissure, the seed face deeply sulcate. 



1. Caucalis microcarpa Hook, and Arn., Bot. Beechey Voy. 348. 1840. 

 Mohave County to Gila, Santa Cruz, and Pima Counties, 3,500 

 feet or lower. Idaho to British Columbia, south to Arizona and Baja 

 California. 



6. CORIANDRUM. Coriander 



Plants annual, caulescent, glabrous; leaves biternate to ternate- 

 pinnate, the leaflets mostly cuneate, doubly lobed at apex, the upper 

 leaflets linear; peduncles axillary or terminal; umbels compound; in- 

 volucre absent; bractlets of the involucel few, inconspicuous, lan- 

 ceolate ; calyx teeth acute, unequal ; corolla white or roseate, the petals 

 conspicuously unequal; stylopodium conic; fruit subglobose, about 

 3 mm. long, not constricted at the commissure, the ribs prominent, 

 the oil tubes solitary in the intervals, few on the commissure, the seed 

 face concave. 



1. Coriandrum sativum L., Sp. PL 256. 1753. 



Tucson, Pima County (G. A. Wilcox in 1905), probably only a 

 chance escape from cultivation. Sparingly naturalized from Europe 

 in various parts of North America. 



