XCr. GESNERIACEiE. 277 



Corolla wylelj-ringent, witli a large lower lobe ; cap- 

 sule 2-horned 1. Pretkea.. 



Corolla tubular-funnelshaped, subequally 5-lobed. 



Fruit beaked, shortly spiny at base 2. RoGEElA. 



Fruit angularly wing-lobed, the lobes rigid, spiny, 



and armed with recurve-hooked spines .... 3. Uncaria. 

 Fruit subcircular, broadly 2-winged round the 



mai'gin ; seeds solitary 4. Pteeodiscus, 



Tribe 2. Sesames. Fruit capsular, membranous, dehiscent. Seeds nu- 

 merous, oily, often wdnged. — Erect, leafy annuals. 



Capsule oblong, 2-1-lobed, acuminate 5. Sesamopteris. 



Capsule oblong 4-lobed, shortly 4-horned at apex . 6. Sporledera. 



Tribe 3. Didymocarpe.e. Ovary 1-celled, with projecting parietal pla- 

 centas. Capsule 2-ceiled, dehiscent, membranous. Seeds numerous, mi- 

 nute, mostly nude, pendulous. — Stemless perennials. 



Capsule pod-Hke, long and slender, spirally twisted , 7. Streptocaepus. 

 TeIBE 1. PEDALINEiE. (GrCn. 1-4.) 



1. PRETREA, Oay. 



Calyx 5-parted, the lobes linear, subfalcate. Corolla cam- 

 panulate-ringent, very gibbous at base, the limb broad, 5-lobed, 

 the lowest lobe ovate, much the longest, 7- striate. Stamens 

 4, didynamous ; anthers oblong, incumbent. Ovary globose, 

 2-horned, pubescent ; stigma forked. Fruit hard, 2-horned, 

 4-lobed ; nuclei 1-celled, 1-2-seeded. Embryo minute. — De- 

 caisne in Ann. Sc. Nat. ser. 5, iii. 333. 



P. eriocarpa, Dene., found- by the Rev. P. Lemuc near Litakun, is thus de- 

 scribed: — " Branches pubescent-hairy ; leaves obtusely lobulate or coarsely 

 toothed, petioled ; peduncles twice as long as leaves ; 2-glanded at base ; 

 bracts setaceous ; calyx-lobes lanceolate ; corolla broadly riugent, downy ; 

 fruits cupidate, nerved, horned, pubescent-hairy." {Bene.) — Unknown to 

 me. 



2. ROGERIA, aay. 



Calyx 5-fid, persistent. Corolla tubular, somewhat funnel- 

 shaped, gibbous on the upper side at base, with a short, 

 5-lobed, sub-2-labiate limb. iStamens 4, included, didynamous, 

 inserted in the base of corolla-tube ; a minute rudiment of a 

 5th ; anthers oval, 2-celled. Style filiform ; stigma 2-3- 

 lamellate. Fruit hard, opening at the apex, beaked, having 

 near the base 2-5 unequal spines, 2-3-valved, with 4-6 un- 

 equal cells, the larger several-seeded, the smaller abortive or 

 1-seeded. Seeds pendulous, 3-angled, with a muricated testa. 

 —DC. Prod. ix.p. 256 ; Thes. Cap. t. 118. 



22. longiflora. Gay, is a strong-growing, procumbent, glabrous and 

 glaucous annual, growing to the north of tlie Orange River. Leaves on 

 long petioles, opposite, broadly-ovate, 2-2^ inches long. Tube of corolla 

 nearly 3 inches long, the lobes obtuse. 



