788 SCROPHULARIACEAE 



stems solitary from a creeping rootstock ; corolla usually margined with yellow ; 



plant darkening in drj-ing. 46. C. luteovirens. 



Stems growing in clumps, with a short caudex; plant rarely darkening In dry- 

 ing. 

 Upper leaves broadly lanceolate or ovate; all leaves 3-ribbed. 



47. C. sulphurea. 

 Leaves all linear, 1-ribbed, or the uppermost linear-lanceolate and Indis- 

 tinctly 3-ribbed. 48. C. wyomingensis. 



XI. LUTE.^E. 



Plant seldom over 1 dm. high; bracts green or tinged with brownish rose; calyx with 

 short obtuse lobes. 

 Stem less than 2 dm. high, sparingly villous; bracts tinged with brown. 



49. C. pulcheUa. 

 Stem 2-3 dm. high, hirsutulous; bracts tinged with rose. 43. C. Bennittii. 



Plant 2-4 dm. liigh; bracts pale yellow. 



Stems \allous; leaves lanceolate. 50. C. lutea. 



Stems pUose; leaves hnear or lance-linear. 41. C. Cusickii. 



XII. LiNEATAE. 



One species. 51. C. lineata. 



XIII. FASCICUL.A.TAE. 



Bracts rhombic-obovate or broadly cuneate in outline, almost pectinately divided. 



52. C. Pecten. 

 Bracts ovate or lanceolate in outline, pinnatifld. 



Upper leaves and bracts, only 3-fld at or above the middle. 48. C. wyomingensis. 



Leaves and bracts deeply divided into hnear divisions. 53. C. fasciculata. 



XIV. Pallescentes. 



Plant low, less than 2 dm. liigh, finely puberulent. 54. C. pallescens. 



Plant 1.5-3 dm. lugh, hirsute or villous as well as puberulent. 



Lateral divisions of the calyx deeply cleft into two subulate lobes; corolla 12-15 mm. 



long. 55. C. longispica. 



Lateral divisions of the calyx merely 2-toothed. 



Lower hp two-thirds as long as the galea; corolla about 2.5 cm. long. 



50. C. lutea. 

 Lower hp almost equalUng the galea; coroUa about 2 cm. long. 



56. C. pilifera. 



XV. Br.\chyanthae. 



Corolla 2-3 cm. long ; stem glabrous or nearly so. 6. C. cognata. 



Corolla 1..5-2.5 cm. long; stem pubescent. 



Lower hp of the corolla fully half as long as the galea; plant less than 1 dm. liigh. 



57. C. pubcrula. 

 Lower lip one-fifth to one-tliird as long as the galea; plant 3-4 dm. liigh. 



Lower hp about one-third as long as the galea, its lobes lanceolate, acuminate. 

 Stem 5-6 dm. lugh, finely puberulent; bracts minutely puberulent. 



58. C. cervina. 



Stem 2-4 dm. high, more or less hirsute- villous ; biacts shortly villous-liirsute. 



59. C. brachyantha. 

 Lower lip one-fifth to one-fourth as long as the galea, its lobes ovate, acute. 



60. C. flava. 



XVI. Sessiliflorae. 



One species. 61. C. sessili flora. 



1. C. exilis A. Ncls. Stem strict, 3-8 dm. high, 'more or less glandular- 

 hirsute or villous; leaves linear-lanceolate or lanceolate, long- attenuate, 3-10 cm. 

 long, 3-nerved, more or less glandular-hirsute; inflorescence long, sjiike-Uke; 

 bracts hnear-lanceolate, attenuate, only the uppermost tipped with scarlet or 

 crimson; calyx more deej)ly cleft above than below, about equalling the corolla; 

 lobes linear-lanceolate; corolla about 2 cm. long, yellowish or tinged witli i)ink 

 on the margins; galea about 7 mm. long, obtuse; li]) less than 2 mm., 3-cleft, with 

 obtuse lobes. C. stricta Rydb., not DC. In swampy places, especially in saline 

 soil: Wash. — Nev.— Colo. — Mont. Plain — Mont. Jl-Au. 



2. C. coccinea (L.) Spreng. Stem usually simple, 3-6 dm. high, more or less 

 short-villous; leaves of the basal rosette, oblong or obovate, entire, 2-5 cm. long; 

 stem-leaves 3-8 cm. long, with 3-7 linear, obtuse divisions; bracts 3-5-cleft, 

 tipped with crimson; lateral lobes usually lanceolate, acute, or obtuse, the middle 

 one broadly oblong, romided at the apex; calyx 1.5-2 cm. long, almost equally 

 deeply cleft above and below, into two oblong, truncate or retuse divisions; 

 corolla greenish yellow, about 2 cm. long; galea about 8 mm. long, roimded at 

 the apex; lower lip about 3 mm. long. Meadows and thickets: Me. — N.C. — 

 Tex.— Sask. Plai7i. My-Jl. 



