206 SCROPHULARIACEAK (FIGWORT FAMILY) 



F. Calyx 16-20 mm. long; plant 2-3 dm. high, pubescent to base; corolla 2.5-3 

 cm. long. E. C. elmeri 



FF. Calyx 20-30 mm. long; plant 5-10 dm. high, glabrous below; corolla 4-5 

 cm. long. E. C. linearifolia 



EE. Calyx more deeply cleft behind than in front. E. C. covilleana 



EEE. Calyx cleft to about the same depth behind as in front. 



G. Corolla tube about 3 times as long as its upper lip. E. C. rubida 

 GG. Corolla tube 1-2 times as long as its upper lip. 



H. Stems glabrous below; bracts crimson or white. W. C. E. C. oreopola 



HH. Stems not glabrous below; bracts scarlet. 



I. Plants ashy-pubescent. E. C. pruinosa 



n. Plant not ashy-pubescent. 



J. Plant densely glandular; leaves lanceolate to obovate. E. C. applegatei 

 JJ. Plant net glandular or only sparingly so. 

 K. Leaves all entire. 



L. Stems 3-4 dm. high; leaves oblong-linear, 5-10 cm. E. C. pinetorum 

 LL. Stem 2-3 dm. high; leaves lanceolate. 



M. Leaves 2-4 cm. long; bracts entire or merely few-toothed near the 

 apex. C. C. crispula 



MM. Leaves 5-15 cm. long; bracts cleft into linear lobes. (See NN.) 

 KK. Leaves or some of them deeply lobed. 



N. Middle lobe of bracts wide and rounded; halves of the calyx each with 

 2 very shallow lobes or merely emarginate or entire. E. C. camporum 



NN. All segments of the bracts linear; halves of the calyx each with 2 lan- 

 ceolate or ovate-lanceolate lobes. W. C. E. C. angustifolia 

 GGG. Corolla tube much shorter than its upper lip. 

 O. Stem 1-2 dm. high, from stout caudices; bracts with linear lobes. C. 



C. rupicola 



OO. Stem 3-6 dm. high, from slender rhizomes; bracts with short lobes. C. 



C. suksdorfil 



AA. Upper bracts of the inflorescence green or white or yellowish. 

 P. Bracts of the inflorescence lobed or cleft. 

 Q. Calyx 10-20 mm. long. 



R. Plant ashy-pubescent or -puberulent; corolla 10-20 mm. long. 

 S. Inflorescence more or less pilose. E. C. fasciculata 



SS. Inflorescence not pilose. 



T. Upper leaves lobed; inflorescence not glandular; upper lip of the corolla 

 twice as long as the lower. E. C. pallescens 



TT. All the leaves often entire; inflorescence somewhat glandular; upper lip 

 of the corolla 4 times as long as the lower. E. C. rustica 



RR. Plant glabrous or pubescent or pilose, but not ashy. 

 U. Calyx 2-cleft, the lobes 2-toothed or -cleft. 

 V. Upper lip of the corolla more than twice as long as its tube. 

 W. Pubescence soft, pilose. W. C. laevisecta 



WW. Pubescence harsh, stiff. E. C. lutescens 



W. Upper lip of the corolla less than twice as long as its tube. (Sec KK.) 

 UU. Calyx cleft into 4 almost equal lobes; corolla 12-15 mm. long. E. 



C. longispica 



QQ. Calyx 25-40 mm. long. 

 X. Upper lip of the corolla nearly as long as the corolla tube; corolla 25-50 mm. 



long. (See KK.) 



XX. Upper lip of the corolla about J as long as the corolla tube; corolla about 



25 mm. long. E. C. pilifera 



PP. Bracts of the inflorescence all entire. E. C. cusickii 



