Mack-] XLI. CELASTRACE^: (OLIVER). 377 



IMPERFECTLY KNOWN SPECIES. 



14. S. rufescens, Hook.f. M. Nigrit. 283. The only specimen which 

 I have seen is scarcely sufficient for examination. It is not* identifiable with 

 any other. Glabrous with verruculose bark. Leaves coriaceous, reddish 

 when dry, oblong-elliptical to oblanceolate, obtusely acuminate, narrowed to 

 a cuneate base, distantly and obscurely denticulate, coarser reticulation sub- 

 prominent beneath, 2-3 in. long, f-1 \ in. broad ; petiole 1-2 lines. Flowers 

 1 or 2 in an axil, on short simple pedicels. " Calyx-lobes roundish ; petals 

 shortly clawed. Disk flat, ample. Filaments very short ; anthers transversely 

 elongate, cylindrical." 



Upper Guinea. Sierra Leone, T. Vogel '! 



15. S. erecta, Walp. Rep. i. 402. I have not seen flowering specimens. 

 Uur specimens in leaf and fruit are glabrous ; leaves lanceolate or oblong- 

 ■ iptical, obtusely acuminate, rounded or narrowed to the base, regularly 

 serrulate, with subprominent reticulation beneath, 1^—3 in. long, f-1 in. 

 ,I- oad ; petiole 1-2 lines. Fruit subsessile or very shortly stalked, subglo- 

 "ose.— Calypso erecta, Don, Gard. Diet. i. 629. 



Upper Guinea. Sierra Leone, Don ! Bartei' ! 

 **ower Guinea. Ambaca, Angola, Br. Welwitsch ! 



16. S. Ducis-Wurtembergiae, Hochst. in Flora, 1844, 307 (adnot.). 



iru b. Branches subterete, with ashen bark. Leaves obovate, obtusely serrate, 

 lairc-wed at the base into a short petiole, coriaceous, glabrous, copiously reti- 

 culate especially beneath. Axillary panicles dichotomous, six times shorter 

 Aan the leaves. 



NUeLand. Nubia, Sennar. 

 Unknown to me. 



obf a f rica ". a > D0 - Prod. i. 570 {Totusella, Willd. Sp. PI. i. 194), described as with " Leaves 

 "*' s P a ringly glandulose-deuticulate ; anthers sessile," I 



have no means of identifying. 



Order XLII. RHAMNE53 (by Mr. W. B. Hemsley). 



■flowers regular, hermaphrodite or polygamous. Calyx campanulate urceo- 

 e or cylindrical; the tube generally more or less united with the ovary or 

 2 anf ' P er sistent ; limb 5-lobed ; lobes valvate, deciduous or rarely per- 

 cent, often with a raised line or keel down the middle internally. Petals 

 0r 5, hood-shaped or involute, often enclosing the stamens, inserted on the 

 r ° at °f the calyx and alternating with its lobes, rarely absent. Stamens 4 

 dil ♦ °PP osite the petals when the latter are present; filaments filiform, rarely 

 in tl 5 anthers sma H. 2-celled or rarely with the 2 cells confluent, enclosed 

 5 th « petals or rarely protruding beyond them. Disk large, fleshy, filling 

 e , c :% x -tube, annular or cup-shaped and free or lining the calyx-tube, entire 

 lobed, glabrous or tomentose. Ovary sessile, free or imbedded in the disk, 

 short"* ° r more or less adherent t0 the calyx-tube, 2-, 3- or 4-celled ; style 

 rt » entire or divided into as many lobes as ovary-cells ; stigmas terminal, 



