106 Premna. 



0.3 cM., lobes pubescent and glandular, tube glabrous 



without 4. P. parasitica p. 112. 



b. Leaves 8—17 by 3—12 cM.; petioles 1—3 cM.; calyx 

 4-toothed or subtruncate 37. 



37. a. Calyx distinctly, acutely 4-toothed, qot or indistinctly 



4-ribbed, sparsely pubescent and glandular; leaves 10 — 

 17V2 by 5-15V2 cM.; petioles 1.5— 2.3 cM.; style with 

 shortly bifid stigma . . 25. P. thrichostoma p. 128. 

 b. Calyx often truncate or indistinctly 4-toothed, teeth obtuse ; 

 subglabrous, 4-ribbed; leaves 8 — 14 by 3 — 5 cM.; petioles 

 1—3 cM.; stigma long bifid, lobes 0.1 cM. . . .38. 



38. a. Leaves areolate beneath . . 21. P. areolata p. 124. 

 b. Leaves not areolate beneath 26. P. Williamsii p. 129. 



39. a. Calyx hardly 4-toothed or subtruncate; stigmatic lobes 



0.1 cM 38. 



b. Calyx with large teeth, which are '/i or V2 °^ ^^^ tube; 

 stigmatic lobes shorter 41. 



40. a. Calyx coriaceous, teeth 4, obtuse, ciliate 



27. P. oblongifolia p. 129. 



b. Teeth of the calyx acute, sometimes subobtuse, not 



ciliate; one lip 2-toothed, the other 2-toothed or entire 41. 



41. a. Calyx subquadrangular ; leaves 4 — 7V2 by 2 — 4 cM., 



6 — 7-nerved; corymbs 4. — 12 cM. long; corolla with 4 



subequal lobes 28. P. Ridleyi p. 130. 



b. Calyx not quadrangular; leaves 4 — 6-nerved and larger, 

 or, if as large, then 4-nerved; corolla 2-lipped , .21. 



42. a. Leaves 4—10 by 2—4 cM.; petioles 1— 2V2 cM.; ovate, 



base and apex acute. . . . 29. P. rufidula p. 131. 

 b. Leaves 9-24 by eSg- 14 cM.; petioles 2—9 cM. 43. 



43. a. Lobes of the corolla subequal, tube 0.1^ — 0.3 cM. . 44. 

 b. Corolla 2-lipped, tube 0.2 cM.; leaves long acuminate, 



often serrate towards the apex 9. P. Curranii p. 116. 



44. a. Corolla-tube as long as or shorter than the calyx, 0.1 



cM. ; leaves obovate-oblong . 24. P. oblongata p. 127. 

 b. Corolla-tube longer, 0.2 cM. or more; leaves broader 45. 



45. a. Corolla-tube 0.2 cM.; calyx 0.1 cM.; stigmatic lobes 



short, capitate; ovary pubescent and glandular at the top 



30. P. regularis p. 131. 



