108 Premna. 



b. Corymbs 10 — 24 cM. in diam. . 59. 



56. a. Corolla minutely pubescent without, 0.7 cM.; leaves 



10—19 by 6—10 cM.; petioles 1.5—4 cM. ; calyx 0.2 cM. 



39. P. nervosa p. 138. 

 b. Corolla glabrous without, 0.5 — 0.6 cM 57. 



57. a. Throat of corolla glabrous or nearly so; leaves 10 — 18 



by 6—12 cM.; petioles 3—8 cM. 



40, P. paulobarbata p. 138. 

 b. Throat of corolla villous 58. 



58. a. Leaves membranous; upper lip of corolla 2-lobed 



38. P. membranifola p. 137. 

 b. Leaves chartaceous; upper lip of corolla entire 



42. P. integrifolia p. 140. 



59. a. Calyx deeply 2-lipped and -toothed . . ... 60. 

 b. Calyx hardly 2-lipped, subtruncate 62. 



60. a. Calyx deeply or distinctly 2-lipped 61. 



b. Calyx with 5 subequal large teeth, one sometimes larger 



43. P. flavida p. 147. 



61. a. Lower bracts leafy; base of leaves attenuate 



41. P. Wrayi p. 139. 



b. All bracts linear; base of leaves broad, usually rounded 



or cordate 42. P. integrifolia p. 140. 



62. a. Leaves 8— 25V2 by 6-14V2 cM.; petioles 1—2 cM.; 



corymbs 8—26 cM. long, 11—24 cM. in diam.; peduncles 

 2V2 — 11 cM.; stigmatic lobes capitate; drupe with large 

 central cavity . . . . 44. P. macrophylla p. 148. 

 b. Leaves 7—15 by 4V2— 6 cM.; petioles 1—4 cM.; corymbs 

 10— I7V2 cM. in diam.; stigmatic lobes subulate 



37. P. flavescens p 136. 



63. a. Leaves 3-8 by 2—5 cM.; petioles V2— IV2 cM. . 64. 

 b. Leaves 10—35 by 7—20 cM. ; petioles 3—10 cM. . 70. 



64. a. Leaves entire 65. 



b. Leaves partly or totally crenate, serrate, or dentate . 69. 



65. a. Petioles V2— IV2 cM 66. 



b. Petioles IV2— 6 cM 68. 



66. a. Leaves 3—6 by 2— 3'/2 cM., base cordate or rounded, 



apex acute; calyx 0.3 cM.; corolla pubescent without 



45. P. depauperata p. 149. 



