BUCKWHEAT FAMILY 



393 



Fig. 68. CHORI- 



ZANTHE BEEVI- 



COENU Torr. ; 

 involucre, x 5. 



in 1907 (Herb. Pac. Grove Mus.). This material is scanty but seems distinct (as is too often 

 the case when one is dealing with single sheets instead of ample series of specimens) from 

 any of the forms referred to C. pungens. C. douglasii has long remained obscure and has 

 rarely been honored with the citation of definite material. Dr. Parry accepted and described 

 it as a species (Proc. Davenp. Aead. 5: 175), citing as typical his specimens from the valleys 

 back of Santa Cruz near Felton and Ben Lomond. These plants have purple membranes to 

 the involucral teeth as described for the type, but we should, however, not regard them as 

 specifically distinct from C. pungens. 



Ref. CHORIZANTHE DOUGLASII Benth. Trans. Linn. Soc. 17: 418 (1837), type from Cali- 

 fornia (probably Monterey Co.), Douglas. 



6. C. brevicornu Torr. (Fig. 68.) Stems several from the base, 

 erect, repeatedly and shortly dichotomous, yellowish, 3 to 8 

 inches high, excessively fragile; herbage minutely pubescent; 

 leaves in a basal tuft, linear-oblanceolate, narrowed to a petiole, 

 y 2 to 2 inches long; involucres in the forks and along the 

 branchlets, 1-flowered, cylindric, 2 to 2y 2 lines long, acutely 

 3-angled or 3-ribbed, with 3 smaller ribs between, minutely cor- 

 rugated between the ribs; teeth 6, hooked, the 3 alternate 

 smaller; flowers white, glabrous, sessile; calyx-tube long and 

 slender, its lobes oblong, nearly equal, truncatish and erosulate 

 at apex, barely exserted ; stamens 3, at base. 



Arid stony hills, Colorado and Mohave deserts north to Inyo 

 Co. Nevada, Arizona. More fragile than any other species, the 

 specimens usually disjointing completely when dry. 

 Locs. Bishop Creek, Hall $ Chandler 7262; Argus Mts., Purpus 5318; Barstow, Jepson 

 5377; Sheephole Mts., Uall 6056; Borego Spr., Brandegee; Pinto Mts., Hall 6029; Palm 

 Canon, Mt. San Jaeinto, Jepson 1389; San Felipe Creek, Brandegee. , 



Eef. CHORIZANTHE BREVICORNU Torr. Bot. Mex. Bound. 177 (1859), type loc. Gila River, 

 Parry. 



1. C. breweri Wats. Similar to C. staticoides but more diffuse; herbage 

 canescent but reddish ; involucres acutely 6-ribbed and reticulated, constricted 

 a little below the spreading teeth, the alternate teeth somewhat smaller; calyx 

 white, exserted, its lobes oblong to elliptic, obtuse, entire, subequal, at least 

 when fully developed. 



Hillsides at Chorro near San Luis Obispo, K. Brandegee. Insufficiently known 

 and perhaps only a variety of the next. 



Ref. CHORIZANTHE BREWERI Wats. Proc. Am. Acad. 12: 270 (1877), type spms. from San 

 Luis Obispo, Brewer 461, and Santa Margarita Valley, Brewer 501. No. 501 has scariously 

 margined involucres; otherwise it appears to be the same as no. 461. The type specimens 

 are young. The following description is taken wholly from a duplicate specimen of the 

 type no. 461. Diffuse, 3 or 4 inches high, somewhat canescent; leaves round-ovate, 4 to 6 

 lines long, abruptly drawn down to a petiole as long; involucres in terminal clusters on the 

 branchlets, cylindric, 6-ribbed, 6-toothed, the 3 alternate teeth smaller; flowers whitish, very 

 shortly pedicelled, included; calyx cleft over half-way, the outer lobes elliptic, the inner 

 oblong, shorter, all the lobes entire. 



8. C. staticoides Benth. Stems 1 or several from the base, erect or ascend- 

 ing, cymosely dichotomous, 4 to 10 (or 18) inches high, fragile at the joints, 

 the sessile involucres solitary in the forks or congested at the end of the 

 branchlets; herbage characteristically reddish, soft-pubescent, the under sur- 

 face of the leaves white-woolly; leaves obovate to elliptic, 3 to 9 lines long, 

 the petioles 1 to 3 times as long; involucres cylindric, 6-ribbed, 2 to 2y 2 lines 

 long, the teeth spreading, hooked at tip, 3 much larger than the 3 alternate or 

 the latter obsolete; calyx white, rose-pink or deep rose, exserted, the lobes 

 narrowly oblong, mostly entire, hairy on the back, the inner smaller and 

 shorter; stamens 9 or 6. 



Dry sandy plains : Southern California in the coastal region, north to Mon- 

 terey Co. and east to the foothills and the floor of the upper San Joaquin Valley. 

 Not known in the Mohave or Colorado deserts. 



