BUCKWHEAT FAMILY 397 



20. C. corrugata T. & G. (Fig. 69.) Stems several 

 from the base, erect or ascending, 1 to 4 inches high, 

 slightly villous; leaves roundish ovate, woolly or gla- 

 brate above, 2 to 9 lines long, on slender petioles; bracts 

 subulate, small; involucres solitary in the forks and 

 along the branches but numerous; involucral tube cylin- 

 drical, not angled or ridged but strongly corrugated, 1 

 to 11/^ lines long; involucral lobes 3, equal, ovate, as 

 long as the tube, woolly above, reticulate below, short- 

 awned, uncinate; cal.yx white, included; "stamens 6 

 Fig. 69. Chorizanthe or 9, on middle of tube." 



CORRUGATA T. & G. ; Eastcru .Alohave Desert and southward along the 



mvolucre, x 6. Colorado River to the Colorado Desert and Lower 



California. 

 Loes. — Amboy, K. Brandegee ; Ludlow, Jepson 5503, 5507; Chuckawalla Spr., Hall 5905; 

 Coachella, Grcata; Santa Maria Mts., Schellenger; Signal Mt., Brandcgee. 



Befs. — Chorizanthe corrugata T. & G. Proc. Am. Acad. 8: 198 (1870). Acantliogonum 

 corrugatum Torr. Pac. R. Rep. 5=: 364 (1857), type loc. Ft. Yuma. 



21. C. watsonii T. & G. Stems erect or ascending, several from the base, 

 dichotomous, 1 to 4 inches high ; herbage canescent ; leaves basal, narrowly 

 oblanceolate ; bracts in pairs, at length setaceous; involucres solitary in the 

 forks and clustered towards the ends of the branchlets, canescent; involucral 

 tube slender cylindric, not ribbed, obscurely corrugated, 2 to 3 lines long, its 

 teeth 5, one foliaceous and usually much larger than the other four, especially 

 on involucres solitary in the forks; flower pedicelled, included; calyx yellow, 

 hairy externally; stamens 9, inserted at mouth of tube. 



Eastern Mohave Desert, north to Inyo and Lassen cos. Nevada to "Wash- 

 ington. Foliaceous lobe of the involucre 3 to 4 lines long. 



Locs. — Lancaster, Davidson; Victor, Ball 6213; Barstow, K. Brandegee; Mt. Pinos, Hall 

 6355; KernviUe and Lone Pine, Brandegee; Bishop Creek, Hall ^ Chandler 7247; Honey 

 Lake, Brandegee. 



Refs. — Chorizanthe wat.sonii T. & G. Proc. Am. Acad. 8: 199 (1870), type specimens 

 from Humboldt, Reese River and Grass valleys, Nev. ; Wats., Bot. King, 313, pi. 34, figs. 

 4-6 (1871). 



22. C. vortriedei Brandegee. Stem divaricately trichotomous at the first 

 node, then dichotomous, 4 to 7 inches long, the internodes relatively long and 

 the involucres solitary in the forks; herbage glabrous or a little glandular; 

 leaves in a basal rosette, spatulate, i/t to 1 inch long; bracts small, perfoliate, 

 3 (or 4) -lobed, the lobes triangular or otilong; involucres l\-2 lines long, 

 the tube 4-sided or 4-angled, the angles at base somewhat gibbous or ridge- 

 like; involucral teeth 4, short, ovate or triangular, cuspidate; flowers 2, long- 

 pedicelled; calyx yellowish-green, 5-cleft, each short yellowish division bearing 

 two white oblong lobes; stamens 9, inserted at base; seed black, globose, 

 apiculate. 



Local species of the southern Santa Lucia Jits. In aspect suggestive of 

 being a starved form of C. perfoliata, and yet a very distinctive species, par- 

 ticularly in its peculiar calyx. 



Ref. — Chorizanthe vortriedei Brandegee, Zoe, 4: 158 (1893), type loc. Sauta Lucia 

 Mts., Vortriede, Eastwood. Also collected on the Burro Trail, K. Brandegee. 



23. C, perfoliata Gray. Stem branching at or near the base, diffuse with 

 numerous branchlets, 8 to 13 inches high; leaves spatulate, 1 to 2 inches long; 

 herbage sparingly pubescent or a little glandular; bracts perfoliate, orbicular 

 or 3-lobed, spine-tipped at the angles ; involucres strongly and acutely 4-angled, 

 2 or in age 3 or 4 lines long, mostly one at each node, wrinkled between the ribs, 

 the 4 divergent teeth spine-tipped; angles or ribs sometimes swollen into a 

 small gibbous projection at base; calyx pedicelled; stamens 6. 



