1921] NATURAL SCIENCES OF PHILADELPHIA. 529 



Sepals of each side distally free. Posterior lobes of corolla with 

 narrow membranous margins, anterior lobes relatively 

 developed (over one third length of posterior) and distally 

 thin. Leaf-blades pinnatifid-lobed, and like the calyx 

 more or less pubescent. 

 Corolla 40-50 mm. long. Sepals attenuate, acutish to acute. 

 Capsule 15 mm. long. Stem tomentose. Bracts and 

 calyx distally j^ellowish. 1. C. sessilifiora. 



Corolla shorter. Sepals broader. Capsule 10-13 mm. long. 

 Stem appressed-lanate. 

 Corolla 35-40 mm. long, its anterior lobes 5-7 mm. long, 

 yellow and much longer than the slightly thickened 

 green base. Sepals acute to acuminate. Stigma about 

 1 mm. wide. Leaves 3-7 cm. long. Bracts and calyx 

 yellowish. 2. C. labiata. 



Corolla 30-35 mm. long. Seeds 1.5-1.8 mm. long, brown. 

 Leaves 5-8 cm. long. 

 Anterior corolla-lobes 5-7 mm. long, purple, evidently 

 longer than the thickened green base. Sepals acutish 

 or acute. Bracts and calyx distally violet-purple. 

 Stigma nearly 1 mm. wide. 3. C. purpurea. 



Anterior corolla-lobes 3-4 mm. long, pinkish, little if at 

 all longer than the thickened green base. Sepals 

 obtuse. Bracts and calyx distally orange-red. Stigma 

 about .5-.7 mm. wide 4. C. lindheimeri. 



Corolla 18-23 mm. long. Seeds 1.2 mm. long, blackish- 

 brown. Leaves 3-6 cm. long. Bracts and calyx distally 

 lemon-yellow. 5. C. citrina. 



Sepals of each side united throughout, broadly rounded. Posterior 

 lobes of corolla with broad membranous margins, anterior 

 lobes green, thickened nearly throughout, and less than one 

 fourth length of posterior. Leaf-blades entire. 

 Stems, leaves and calyces densely white-lanate. Leaves 



linear; the bracts usually trifid. 6. C. lanata. 



Stem, leaves and calyces finely pubescent, green. Leaves 

 oblong-lanceolate ; the bracts broad, entire. 7. C. laiehracteata. 

 Root annual. Sepals of each side united throughout, expanding 

 distally to the broadly rounded apex. Seeds with lighter 

 pale-brown reticulations enclosing slightly elongated areas. 

 Bracts and calyx distally red. Stem loosely pubescent. 

 Anterior corolla-lobes developed, distally thin, yellowish. Leaf- 

 blades pinnatifid-lobed. Plant forming a flat basal rosette 

 of leaves, which persist until after anthesis. 8. C. coccinea. 



Anterior corolla-lobes very short, thickened, green. Leaf -blades 

 entire or occasionally slightly pinnatifid-lobed. Basal rosettes 

 less definitely formed, not persisting. 9. C. indima. 



