riGWORT FAMILY 787 



iwn 



puberulent. 



18. C. humilis, 



19. C. brunnescens. 



VII. LUTESCENTES. 



Leaves linear; corolla 2-3 cm. long. 



Stem 2-3 dm. high; corolla scarcely longer than the calyx. 20. C. dubia. 

 Stem 3-5 dm. liigh; corolla decidedly longer than the calyx. 



Calyx-lobes obtuse. 21. C. deseriorum. 



Calyx-lobes acute or acuminate. "22. C. lutescens. 



Leaves lanceolate; corolla nearly 4 cm. long; calyx-lobes acute. 23. C variabilis, 



m 



VIII. Lancifollve. 



Corolla 3.5-4 cm. long; galea 1.5-2 cm. long; leaves lanceolate. 



Bracts brick-red or yellowish; leaves usually more or less pubescent. 



23. C variabilis. 



Bracts crimson ; leaves glabrous or nearly so. 24. C. Vreelandii. 



Corolla 3 cm. long or less. 



Calyx and upper part of the stem densely white- villous, 25. C tnnervis. 



Calyx and upper part of the stem sparingly hirsu be-villous . 



Plants growing more or less in clumps, with a sliort caudex. 

 Corolla 2-3 cm. long; bracts usually more or less crimson. 

 Plant tall, 4-6 cm. high; calyx-lobes acute or acuminate. 



Galea 15-18 mm, long. 13. C\ confusa. 



Galea about 10 mm. long. 26. C. Tweedyi, 



Plant low, 1-3 dm. high; calyx-lobes obtuse. 27. C. subpurpurascens. 



Corolla less than 2 cm. long; bracts brick-red. 28. C. mineata. 



Plants A\-ith sohtary stems from horizontal or ascending rootstocks. 



29. C. lancifolia, 



IX. HiSPIDAE. 



Calyx-lobes rounded at the apex; bracts piirplish, much exceeding the flowers. 



30. C obtusiloba. 



Calyx-lobes acute or rarely obtuse at the apex; bracts if at all only sUghtly exceeding the 



flowers. 



Corolla about 4 cm. long. .,, ^i. „ * v. 



Plant simple, with a horizontal rootstock; galea longer than the corolla-tube. 



31. C. Suksdorfii- 



Plant cespitose, with a short caudex; galea not longer than the corolla-tube. 



13. C. confusa. 



Corolla 1.5-3' cm. long; plant more or less cespitose. with a short caudex. 

 Stem more or less pubescent, 3-6 dm. liigh. 



Lobes of the calyces and bracts lanceolate or oblong; bracts usually crimson. 

 Body of the leaves lanceolate; lobes directed forward. 



Plant decidedly glandular- or \Tscid-pubescent. 32, C. viscida. 

 Plant scarcely viscid, but puberulent and hirsute. 



Corolla much exceeding the bracts; galea equalling or exceedmg the 



tube. 33. C. amplifolia. 



Corolla slightly if at all exceeding the bracts ; galea shorter than the 



tube. , , . _ 



Bracts \vith very short lobes or merely toothed; stem sparingly 



hirsute or merely puberulent. 34. C. Bradburyi, 



Bracts with long narrow lobes; stem copiously hirsute. 



35. C. hispida. 



Body of the leaves linear, the lobes linear, divergent. 



Galea shorter than the corolla-tube. 36. C. angustifoha. 



Galea longer than the corolla-tube. 37. C. chromosa. 



Lobes of the calycas and bracts narrowly hnear; bracts brick-red. ^ 



38. C. liTiearis, 



Stem glabrous up to the inflorescence. 1-2 dm. high. 39. C. Haydeni. 



X. Paludae. 



UDDer leaves long-acuminate, caudate-falcate. , i. ^ 



^^tem up to the mflorescence and leaves puberulent or glabrate. ^ ^^^^.^^ 



Stem and leaves pilose. 41.* C." CusickU. 



ITr>T>pr leaves neither caudate, nor lalcate. , , „ , 



•^Scte not pale-j-eUow ; coroUa tisually less than 2 cm long. 

 Qt^m.5l(indpr 2-4 dm. high; bracts rose or brownish. 



^^StSmm a ro^stoclc. sparingly ^iUou^. . . 42. C. gractllrma. 



SteSs from a caudex. hirsutulous. or villous m the "^Ao^^-^^^^^e.^ .^^^-^.^ 



"^^^r^'t^'puberSfnt 'S br'oSf scTlet " ^^- C panula ' 



iS SS: varj-ing from hght brownish crimson to gr^eemsh^yelJow. 



i'ianc u.o ^ ^^^-.^^ 'ij«u+K. if- o*- qU viiinns in the inflorescence. 



