1907] Hall. Compositae of Southern California. 61 



nerve : corolla-teeth lanceolate, rather long ; throat tapering 

 gradually to the tube which is only minutely and sparsely pubes- 

 cent: achenes villous: style-branches subulate-filiform, long- 

 exserted. Common in the Transition and Canadian zones, 1800 

 to 3000 m. alt. : Little Green Valley, San Bernardino Mts., alti- 

 tude 2200 m., Jul., 1904, George R. Hall, no. 34; Bluff Lake, San 

 Bernardino Mts., Grinnell, no. 94; Barton Flats, San Bernardino 

 Mts., Mrs. Wilder, no. 597; Round Valley, San Jacinto Mt. 

 (where abundant on hillsides), Hall, no. 341; in Kern and Santa 

 Barbara counties, ace. to Greene. 11 Jul.-Sept. 



Var. graveolens (Nutt.) Piper, Contr. U. S. Nat. Herb. xi. 

 559 (1906). Chrysocoma graveolens Nutt., Gen. ii. 136 (1818). 

 Bigelovia graveolens Gray, Proc. Am. Acad. viii. 644 (1873). 

 RABBIT-BRUSH. Robust shrub, commonly 1 to 3 m. high : branch- 

 lets white-tomentose when young, commonly glabrate and yel- 

 lowish-green in age : leaves 2 to 5 cm. long, linear or lanceolate- 

 linear to almost filiform, flocculent-tomentose, sometimes glabrate 

 and green in age: involucral bracts oblong to linear-lanceolate, 

 obtuse to acute: corolla-teeth short; tube nearly glabrous. A 

 common shrub in the arid Upper Sonoran of Western North 

 America : abundant in Owens Valley, Inyo Co., whence it extends 

 southward, but less plentifully, across Antelope Valley to Eliza- 

 beth Lake and through So&dad Carion to Saugus, Los Angeles 

 Co. ; also on sandy plains near Colton, San Bernardino Co., 

 coming perhaps through Cajon Pass. In Owens Valley the 

 Rabbit-brush grows in the Sagebrush belt and completely replaces 

 that shrub if the land is cleared and then allowed to lie fallow. 

 It is here indicative of good soil without excess of alkali, the 

 Rabbit-brush lands being especially suitable for such crops as 

 alfalfa, corn, and potatoes, where irrigation can be practiced. 

 Gray 's statement that it grows in * ' sterile and especially alkaline 

 soil ' ' is therefore misleading, at least in so far as it concerns our 

 California plant. 



7. C. Parryi (Gray) Greene, Eryth. iii. 113 (1895). Linosyris 

 Parryi Gray, Proc. Phila. Acad. for 1863, p. 66. Bigelovia Parryi 

 Gray, Proc. Am. Acad. viii. 642 (1873). 



11 Fl. Fr. 369 (1*97). 



