34 



NORTH AMERICAN FLORA 



[Volume 22 



oo 



24. 

 25. 



26. 

 27. 



Calyx-seg:ments linear-lanceolate, nearly 4 times as long 



as wide. 

 lycaves broadly oblong, pale-green. 



Inflorescence compact ; leaves of flowering stems 



small. 20. 



Inflorescence open ; leaves of flowering stems large. 21. 



Leaves linear-oblong, white-farinose. 22. 



tt Calyx-segments acuminate. 23. 



** Calyx-segments ovate, ovate -lanceolate or triangular-ovate. 



t Pedicels slender, some of them often as long as the flowers 

 or longer. ^ 



J Flowers yellow to orange or pinkisli. 



Basal leaves ovate, rhombic-^vate or rhombic-obovate, 

 acute to acuminate. 

 Leaves of flowering branches cordate to sagittate. 

 Corolla twice as long as the calyx. 



Leaves of flowering branches cordate. 

 Leaves of flowering branches strongly sagittate. 

 Corolla three times as long as the calyx. 

 Flowers few, pinkish or deep-orange. 

 Flowers numerous, pale-orange to yellow. 

 Leaves of flowering branches neither cordate nor sag- 

 ittate. 

 Leaves of flowering branches small, ovate. 

 Leaves of flowering branches lanceolate to linear- 

 lanceolate. 

 Leaves thick, dark-green, not glaucous. 

 Leaves thin, pale-green, glaucous. 



Leaves oblanceolate, long-acuminate. 

 Leaves rhomboid, abruptly acuminate. 



Flowers reddish-orange. 31. 



Flowers bright-yellow. 32. 



Basal leaves lanceolate to oblong-lanceolate, acuminate. 

 Calyx and pedicels very glaucous or farinose ; leaves 



of flowering branches 3--4 cm. long. 

 Calyx and pedicels green ; leaves of flowering branches 

 small. 

 Pedicels short ; leaves weak. 



Flowers orange. 34. 



Flowers yellow. 35. 



Pedicels long ; leaves rigid. 



Calyx-segments ovate -lanceolate ; basal leaves 

 glaucous. 



Calyx-segments ovate ; basal leaves light green, 

 shining. 



Xt Flowers red. 



Flowers small, 8 mm. long. 

 Inflorescence flat-topped. 

 Inflorescence elongated, one-sided. 



Calyx -segments acute. 39. 



Calyx-segments obtuse. 40. 



Flowers large, 10-12 mm. long. 



Calyx-segments sharply acuminate. 

 Calyx-segments obtuse or merely acutish. 



Inflorescence many-branched ; caudex stout, erect. 

 Inflorescence simple or forked ; flowering branches 

 long, ascending. 



if Pedicels stout, short, mostly shorter than the flowers. 

 X Leaves lanceolate to ovate. 



Leaves long-lanceolate, acuminate. 

 Leaves glaucous. 



Corolla reddish-yellow. 44. 



Corolla deep-yellow. 45. 



Leaves not glaucous ; corolla lemon-yellow. 

 Pedicels 6-12 mm. long. 

 Pedicels very stout, 1.5-4 mm. long. 



Corolla pale-yellow ; leaves dull-green. 47. 



Corolla reddish-yellow ; leaves bright-green. 48. 

 Leaves ovate, ovate-oblong or oblong-lanceolate, acute. 

 Leaves not glaucous. 

 Inflorescence compact. 

 Corolla-segments acute. 



Basal leaves oblong-lanceolate, acute ; those 



of flowering branches cordate, ovate. 

 Basal leaves rhombic-lanceolate, acuminate 

 those of flowering branches triangular. ' 50. 

 Corolla-segments obtuse. ' 51. 



Branches of the inflorescence elongated. 



Leaves of flowering branches strongly sagittate 



jD. Bryceae. 

 D. ingens. 

 D. Candida. 

 D. rigtdiflora. 



D. Lax a. 



D. bernardina 



D. Goldmani, 

 D. minor. 



28. D. ovatifoliq.. 



29. D. nevadensis. 



30. V. Plaiiiana. 



D. Purpusi. 

 D. Sheldoni. 



33. D, robusta. 



D. Parishii. 

 D. cymosa. 



^6. D. Brandegei. 

 37. D. lurida. 



38. D. paucijiora 



D. nubigena. 

 D. Xanti. 



41. D. rubens, 



42. D. gigantea 



43. D. rigida. 



D. lanceolaia, 

 D. delicaia. 



46. D. Palmeri. 



D. Brauntoni. 

 D. brevipes. 



49. D. compacta. 



D. congesia. 

 D. Eastwoodiae. 



