110 Premna. 



with petioles reaching 15 cM.; corymbs shorter than 



the leaves 49. P. Goeringii p. 154. 



b. Corolla pubescent without; lobes glabrous within or 

 nearly so '"• 



76. a. Leaves abruptly acuminate, 4—6-nerved, 9—20 by 7—12 



cM.; petioles 27,— 6 cM. . . 50. P. stellata p. 154. 



b. Leaves gradually acuminate, 6— 10-nerved, 10—35 by 



7—20 cM.; petioles 2Vj— 10 cM 77. 



77. a. Leaves eglandular above, 15— 35 by 7V2— 20 cM., petioles 



2'/2— 10 cM.; calyx very shortly and irregularly 5-toothed, 

 not or indistinctly 5-ribbed 51. P. pyramidata p. 155. 

 b. Leaves usually densdy glandular above, 10—28 by 7— 

 14 cM.; petioles 3 — ^10 cM.; calyx distinctly 5-toothed, 

 2-lipped, distinctly 5-ribbed . 52. P. tomentosa p. 156. 



78. a. Corolla glabrous without, lobes pubescent within; leaves 



with petioles reaching 15 cM., corymbs shorter than the 



leaves .' 49. P. Goeringii p. 154. 



b. Corolla pubescent without, lobes glabrous within; leaves 

 11—30 by 8—20 cM.; petioles P/a— 8 cM. . . . 79. 



79. a. Leaves gradually, subobtusely acuminate, often denticu- 



late, sparsely pubescent or subglabrate beneath; calyx 

 with 4 equal teeth and 1 larger one, not or indistinctly 



2-lipped, 0.2 cM 43. P. flavida p. 147. 



b. Leaves more or less abruptly and acutely acuminate, 

 entire, stellate-tomentose beneath ; calyx 2-lipf>ed, 0.35 cM. 



53. P. Cumingiana p. 157. 

 Doubtful species: 54. P. Ledermanni p. 159. 



55, P. nauseosa p. 159. 



56. P. papuana p. 160. 

 57. P. populifolia p. 160. 



Section I Gumira Hassk. 



1. P. Derryana King et Gamble. Kew Bull., 107 

 (1908); iid. Journ. As. See. Beng. LXXIV. 4, 813 — A 

 climbing (?) shrub; branchlets smooth, with large lenticels; 

 leaves membranous when dry, subsessile ; elliptic or obovate, 

 shortly and obtusely acuminate at apex, attenuate and 



