314 



RHINANTHACEAE. 



12. GERARDIA L. 



I. Gerardia Besseyana Britton. On prairies and river bottoms from Iowa 

 and Wyo. to La. and Colo. — Alt. 4000-5000 ft. — Boulder; Platte River, Den- 

 ver; Ft. Collins; Longmont ; along the Poudre; Longmont ; Cherry Creek. 



13. CASTILLEJA Mutis. Painted Cup, Painter's Brush. 



Annuals or biennials. I. Stenantiiae. 



Perennials. 



Galea several times longer than the very short lip, usually at least Yi as long 

 as the corolla-tube ; bracts in most species tinged with scarlet, crimson 

 or rose. 

 Calyx cleft much deeper in front than behind. II. LiNARi.tFOLiAE. 



Calyx about equally cleft in front and behind. 



Stem villous-canescent ; bracts entire, or trilobed with broad, rounded 



middle lobe. III. Integrae. 



Stem glabrous or pubescent, but not canescent. 



Leaves entire or the uppermost rarely slightly 3-Iobed ; corolla-lip very 

 short and callous. 

 Bracts usually entire and obtuse, oblong to obovate, if 3-lobed with 



a broad middle lobe. IV. Rhexifoliae. 



Bracts 3-cleft with lanceolate lobes, if entire very acute. 



V. Lancifoliae. 

 Leaves, at least the upper, piniiately cleft ; bracts also cleft ; lower corolla- 

 lip not callous, larger. VI. Hispidae. 



Galea less than 3 times as long as the lip, rarely half as long as the corolla- 

 tube ; bracts in most species tinged with yellow or brown. 

 Leaves entire ; bracts also entire or slightly 3-lobed. VII. Pallid.\e. 

 Leaves pinnately divided, at least the upper ones. 



Whole plant white-woolly. VIII. Lineatae. 



Plant not white-woolly. 



Corolla 1.5-3 cm. long, slightly exceeding the calyx. 



IX. Braciivanthae. 

 Corolla 4-5 cm. long, almost twice as long as the calyx. 



X. Sessiliflorae. 

 I. Stenantiiae. 



One species. 



Bracts crimson or pink. 



Leaves all narrowly linear. 



Upper leaves lanceolate. 

 Bracts yellow. 



Leaves entire. 



Bracts oblong. 



Bracts obovate. 

 Leaves pinnatifid. 



I. C. exilis. 



II. L1NARI.EFOLIAE. 



III. Integrae. 



IV. Rhexifoliae. 



C. Hilar ice folia. 

 C. Crista-galli. 

 C. cognata. 



5. C. Integra. 



6. C. gloriosa. 



7. C. Lindheimeri. 



Upper stem-leaves at least broadly lanceolate or oblong-ovate. 



8. C. rhexifolia. 

 Leaves all narrowly lanceolate. 



Bracts acute and usually deeply cleft, scarlet or crimson. 9. C. confiisa. 

 Bracts rounded at the apex, entire or with a short tooth on each side. 



Bracts brownish or yellowish ; leaves lanceolate, acute, densely puberulent. 



10. C. brunnescens. 

 Bracts crimson or rose-color ; leaves linear-lanceolate, acuminate, glabrous 

 or nearly so at maturity. 11. C lauta. 



