RHINANTHACEAE. 315 



V. LANCIFOLIAE. 



Calyx and upper part of the stem densely white-woolly. . 12. C. trinervis. 

 Calyx and upper part of the stem sparingly hirsute-villous. 

 Plant growing more or less in clumps, with a short caudex. 



9. C. confusa. 

 Stems solitary from a horizontal or ascending rootstock. 



13. C. lancifolia. 



VI. HISPIDAE. 



Galea longer than the corolla-tube. 14. C. chromosa. 



Galea shorter than the corolla-tube. 



Bracts or their middle lobe very broad and rounded ; calyx-lobes very short 



and rounded at the apex. 15. C. obtusiloba. 



Bracts with narrow, lanceolate, oblong, or linear lobes. 



Plant glabrous up to the inflorescence, 1-2 cm. high. 16. C. Haydeni. 

 Plant more or less pubescent, 3-6 dm. high. 



Lobes of calyces, bracts and leaves narrowly linear ; bracts brick-red. 



17. C. linearis. 

 Lobes of bracts and calyces broader, lanceolate or oblong ; bracts crimson. 



1 8. C. hispida. 



VII. PALLIDAE. 



Plant 5-15 cm. high, densely villous above; corolla less than 2 cm. long; bracts 



varying from brownish-crimson to greenish-yellow. 19. C. occidentalis. 



Plant 2-4 dm. high, slightly if at all villous ; corolla usually 2 cm. long or more. 

 Stems solitary from a creeping rootstock ; plant darkening in drying. 



20. C, luteovirens. 



Stems growing in clums with a short caudex ; plant rarely darkening in drying. 

 Upper leaves broadly lanceolate ; all 3-ribbed ; plant glabrous up to the 



inflorescence. 21. C. sulphured. 



All leaves linear, i -ribbed or the uppermost linear-lanceolate and indistinctly 

 3-ribbed ; plant puberulent. 22. C. wyomingensis. 



VIII. LlNEATAE. 



One species. 23. C. lineata. 



IX. BRACHYANTHAE. 



Lower lip of the corolla fully half as long as the galea ; plant less than i dm. high. 



24. C. puberula. 

 Lower lip Ys- l /3 as long as the galea ; plant 3-4 dm. high. 



Lower lip about Yz as long as the galea ; its lobes lanceolate, acuminate. 



25. C. brachyantha. 

 Lower lip H~/4 as long as the galea ; its lobes ovate, acute. 



26. C. flava. 

 X. SESSILIFLORAE. 



One species. 27. C. sessiliHora. 



1. Castilleja exilis A. Nels. (C. stricta Rydb. ; not DC.) In wet ground 

 from Mont, and Wash, to Colo, and Nev. Las Animas; Hotchkiss. 



2. Castilleja linariaefolia Benth. In the mountains from Wyo. to N. M. 

 and Calif.; also in Mex. Alt. 6000-9000 ft. Pike's Peak; near Empire; 

 North Boulder Peak; headwaters of Clear Creek; southeast and west of 

 Ouray; Parlin; Honnold; north of Mancos; Jack's Cabin; Cascade Canon; 

 Cerro Summit ; West Indian Creek ; Elk River, Routt Co. ; Chicken Creek, 

 West La Plata Mountains; Idaho Springs; Cucharas Valley, near La Veta; 

 Twin Lakes ; Veta Pass ; Sangre de Cristo Creek ; Pagosa Springs ; La Veta ; 

 Soldier Canon; Hotchkiss; Gypsum Creek Canon; Baxter's ranch; Steam- 



