Landolphia.] lxxxiv. APOCYNACEiE (staff). 33 



middle and the nioutJ', rarely at tl.e middle; lobes Ig-S liu. long, not ciliate. Ovary 

 hairy or glabrous. Style very t-hort, not or scarcely exceeding the cal3x. Fruit 

 globose to pear-slijiped, with a hard rind, having a concentric sclerenchymatous layer. 

 Leaves 3-6 in. by 1-2.] in. 



Tall sR^ubs or t-litnbers ; secondary nerves 10-15 

 on each side. 

 Calyx fulvo-toineutose; corolla over 2 liii. 

 long; ovary-top very finely tomentose. 

 Leaves al)rnptly or obscurely acuminate; 

 corolla-tube 3 lin. long; fruit 1-3 in. 

 indiain. . . . . . . 19. X. oioariensis. 



Leaves gradually tapering into a distinct 

 acumen; corolla-tube 2^ lin. long; 

 fruit 6-10 in. in diam. . . . 20. L. Klainei. 



Calyx glabrous except on theciliolate margins, 

 shining ; corolla-tube 2 lin. long; ovary- 

 top Jong villous ..... 21. L. Deivevrei. 



Dwarf shrubs, ofte i with subherbaceous shoots ; 



secondary nerves 6-7 on each side . . 22. L. htimilis. 



Leaves ^-3 in. (rarely more) by ^-\\ iu. 



Erect tall shrubs, long climbeis or ramblers; 

 leaves 1-3 in. (rarely more) by f-1^ in. 

 Secondary nerves 7-10 on each t^ide ; corolla- 

 tube 3-3i lin. long; ovary finely tomen- 

 tose . ' 23. i. Heudelotii. 



Secondary nerves 10-12 on each side ; corolla- 

 tube l|-3 lin. long; ovary glabrous . 24. L. Kirkii. 

 Dwarf shrubs ; leaves ^-2h in. by 5— | lin. 

 Secondary nerves 10-12 on each siUe, very 



faint; calyx almost glabrous, shining . 25. L. parvifolia. 

 Secondary nerves 17-20 on each side, distinct; 



calyx pubescent or tomentose . . 26. L. Thollonii. 



1. li. watsoniana, Vogtherr in Kohler, Mediz. Pfl. iii. No. 14, with 

 plate. A very long climbing shrub with long, hook-branched tendrils 

 from the branch-forks, quite glabrous ; young branches brown, rough 

 with numerous lenticels. Leaves ovate to ovate-lanceolate, more or 

 less obtusely acuminate, subacute or rounded at the base, 2-4 in. long, 

 ^-2 J in. broad, chartaceous or thinly coriaceous, glossy above ; midrib 

 very slightly channelled or flat, moderately prominent below ; secondary 

 nerves 8-10 on each side, very slender, rather spreading, straight, 

 connected by fine arches 1-1 J lin. within the margins ; reticulation 

 delicate, inconspicuous, faintly impressed above; petiole IJ lin. long. 

 Corymbs few-flowered, rather loose, very shortly peduncled, terminal, 

 shorter than the leaves ; bracts small, ciliate ; pedicels up to H lin. long. 

 Calyx j to almost 1 lin. long ; sepals ovate, subacute, conspicuously 

 ciliate. Corolla yellowish-white ; tube subcylindric, widest just above 

 the middle, 2J-3 lin. long, villous within above the stamens; lobes 

 narrow, linear-lanceolate, 3J lin. long. Stamens inserted above the 

 middle ; anthers lanceolate, alcute. Ovary subglobose, sulcate, glabrous; 

 style filiform; stigma cylindric from a thickened base.— Van Romburgh 

 in 's Lands PI. Buitenz. 1892, 438 (name only); Dew^vre, Caoutch. Afr. 

 Monogr. Landolph. 57 (description of sterile cultivated specimens) ; 



