242 C;ONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Perianth glabrous or nearly so. 

 Involucres in heads or cymes. 



Leaf blades si)atulate or rounded-rhombic, densely tonientose on both 



sides, the margins not revolute 4. E. pondii. 



Leaf blades linear, oblong, or oblanceolate, glabrate on the upper sur- 

 face, the margins strongly revolute 5. E. fasciculatum. 



Involucres racemose or spicate. 



Involucres 1 -flowered 6. K taxifolium. 



Involucres several-flowered. 



Branches erect, slender 7. E. wrig-htii. 



Branches divaricate, very stout 8. E. nodosum. 



1. Eriogonum orcuttianum S. Wats. Proc. Amer. Acad. 20: 371. 1885. 

 Baja California ; type from Cantillas Mountains. 



Shrub, about a meter high, with tortuous branches, the bark brownish and 

 fissured ; leaves rounded-obovate ; branches of the inflorescence divaricate, the 

 flowers whitish. 



2. Eriogonum undulatum Benth. in DC. Prodr. 14: 7. 1856. 

 Chihuahua to San Luis Potosf and Hidalgo. 



Low depressed shrub; leaves oval to oblanceolate, white-tomentose beneath, 

 long-petiolate ; involucres umbellate or solitary; flowers white, showy. 



This has been reported from Mexico as E. jamesii Benth., a name probably 

 synonymous with E. undulatum. - ^ 



3. Eriog'onum molle Greene, Pittonia 1: 207. 1888. 



Known only from the type locality, Cedros Island, Baja California. 

 Erect shrub, 30 to 60 cm. high; leaves oval or ovate, thick, wliite beneath; 

 involucres in a dense long-pedunculate cyme. 



4. Eriogonum pondii Greene. Pittonia 1: 267. 1889. 

 Baja California ; type from Cedros Island. 



Low depressed shrub ; leaves about 1 cm. long : flowers w lute or pink. 



5. Eriogonum fasciculatum Benth. Trans. Linn. Soc. Bot. 17: 411. 1837. 

 Baja California. California (type locality). Nevada, and Arizona. 



Shrub, 0.6 to 1 meter high; leaves short, often fascicled, white-tomentose 

 or glabrate; flowers white. 



The Coahuilla Indians of southern California use a decoction of the leaves 

 for pains in the head or stomach, and a decoction of the flowers as an eye 

 wash. 



6. Eriogonum taxifolium Greene, Pittonia 1: 2G7. 1889. 

 Known only from Cedros Island, Baja California. 



Low, slender, much branched shrub; leaves linear; fiowei-s white, the invo- 

 lucres in long interrupted spikes. 



7. Eriogonum wrightii Torr. ; Benth. in DC. Prodr. 14: 15. 18.56. 

 Chihuahua and Sonora to San Luis Potosl ; Baja California (?). Western 



Texas (type locality) to southern California. 



Cespitose shrub, 30 to 60 cm. high, white-tomentose throughout ; leaves oval 

 to oblong ; flowers white. 



8. Eriogonum nodosum Small. Bull. Torrey Club 25: 49. 1898. 

 Northern Baja California. Southern California ; type from Dos Cabezas. 

 Densely tomentose shrub, 0.3 to 1 meter high. 



2. HARFORDIA Greene & Parry. Proc. Davenport Acad. 5: 27. 1888. 

 Low, densely branched shrubs, with stitT gray branches; leaves very small, 

 fleshy, spatulate; flowers axillary, the sepals in fruit large, reddish, conspicu- 

 ously veined. 



