786 SCROPHULARIACEAE 



Calyx about equally cleft in front and behind. 



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



middle lobe. IV. INTEGRAE. 



Stem strigose or hirsutulous-canescent ; bracts 3-cleft, with linear lobes. 



V. SUBCINEREAE. 

 Stem glabrous or pubescent, but not canescent. 



Leaves entire, rarely the uppermost slightly 3-lobed; corolla-lip very short 



and callous. 

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



with a broad middle lobe. 



Bracts tinged with crimson or rose. VI. RHEXIFOLIAE. 



Bracts yellow with the very tips brown or red. 



VII. LUTESCENTES. 



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



VIII. LANCIFOLIAE. 



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

 lip not callous, larger. IX. 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. X. PALLIDAE. 



Leaves pinnately divided, at least the upper ones. 



Bracts slightly 3-lobed or entire; lobes truncate or rounded at the apex. 



XI. LUTEAE. 



Bracts deeply divided into lanceolate or linear-lanceolate lobes. 



Whole plant white-woolly. XII. LINEATAE. 



Plant not white-woolly. 



Calyx about equally cleft in front 'and behind or deeper cleft behind. 

 Lip of the corolla scarcely more than half as long as the galea, not 



decidedly saccate. XIII. FASCICULATAE. 



Lip at least two-thirds as long as the galea, decidedly saccate. 



XIV. PALLESCENTES. 

 Calyx much deeper cleft in front than behind. 



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



XV. BRACHYANTHAE. 

 Corolla 45 cm. long, almost twice as long as the calyx. 



XVI. SESSILIFLORAE. 



I. STENANTHAE. 



One species. 1. C. exilis. 



II. COCCINEAE. 



One species. 2. C. coccinea. 



III. LlNARIAEFOLIAE. 



Bracts crimson or pink. 



Plant low, cespitose, with several stems, about 23 dm. high; leaves and bracts pin- 

 nately divided; inflorescence short and head-like. 3. C. collina. 

 Plant tall, 410 dm. high, with a single or sometimes 23 stems; leaves entire or the 



upper with 2-3 lobes; inflorescence elongate. 



Leaves all narrowly linear. 4. C. linariaefolia. 



Upper leaves lanceolate. 5. C. Crista-galK. 



Bracts yellowish or brownish. 



Bracts cream-color; inflorescence villous-hirsute, with yellowish hairs. 



6. C. cognata. 

 Bracts brownish; inflorescence villous, with short white hairs. 



7. C. arcuata. 



IV. INTEGRAE. 

 Leaves entire. 



Bracts oblong. 8. C. Integra. 



Bracts obovate. 9. C. gloriosa. 



Leaves pinnatifld. 10. C. Lindheimeri. 



V. SUBCINEREAE. 



One species. 11. C. subcinerea. 



VI. RHEXIFOLIAE. 



Corolla 4-5 cm. long, nearly twice as long as the bracts. 12. C. magna. 



Corolla 1.5-3.5 cm. long, little if at all surpassing the bracts. 

 Bracts scarlet or crimson, rarely pink. 



Corolla about 3 cm. long; stem 3-5 dm. high. 



Leaves narrowly lanceolate; bracts acute and usually deeply cleft. 



13. C. confusa. 



Leaves, at least the upper ones, broadly lanceolate or oblong-ovate; bracts 

 rounded at the apex, entire or with a very broad middle lobe and small 

 lateral ones. 14. C. rhezifolia. 



Corolla 1.5-2 cm., rarely 2.5 cm. long; plant 2-3 dm. high. 

 Leaves lanceolate to linear. 



Stem and leaves glabrous or puberulent. 15. C. lauta. 



Stem and leaves viscid-pubescent. 16. C. pinetorum. 



Leaves oblong, elliptic, or ovate-lanceolate. 



Stem and leaves densely pubescent. 17. C. Leonardi. 



