﻿NOTES ON CONVOLVULACEjE, CHIEFLY AFRICAN. 85 



laribus, deciduis suffulti ; sepala ovato-suborbicularia, magna, 

 intus glabra, dorso et margine dense albo-lanata; corolla tubuloso- 

 campanulata, glabra, 5 poll, longa, roseo -purpurea vel albido-rosea. 

 Pungo Andongo, "in pascuis montosis oum Cisso rubiginoso nob. et 

 Cyclonematu sp. freq." Welwitsch, 61821—7. Buchingeri Peter, /3. 

 tomentosa Hallier in Engl. Bot. Jabrbuch. xviii. 152. 



6. Buchingeri. — Caulis glaber, folia apice acuta utrinque glabra, 

 bractese glabrae. — I. Buchingeri Peter in Engl. Pr. Nat. Pfi. iv. 8, 29. 



Tbe diagnosis given by Welwitsch is very brief (as indeed is the 

 one published by Dr. Peter), but sufficient to separate the plant from 

 I. verbascoidea Chois., to which he thought it might possibly be 

 referred. 



Ipomoea Welwitschii Vatke MSS. ex Hallier, I. c. 146.— This, 

 for which Dr. Hallier cites no Welwitsch number, was based by Vatke 

 upon our specimens of Welw. 6120, to which he has attached a 

 ticket—" I. Welwitschii Vatke, pi. Hoepner ined." A form of this 

 (Welw. 6120b) is the type of Mr. Baker's I. aspericaulis (Bulletin, 

 1894, 70, cited as " 6120 "). This has leaves half an inch or more 

 in breadth, but the specimens under 6120 show a tendency towards 

 broadening, and the plants agree in other characters. If the 

 broad-leaved form require a name, it may be called latifolia, and 

 the plant will stand as : — 



Ipomoea Welwitschh Vatke, (3. latifolia. — Leaves linear-oblong 

 to ovate-lanceolate, acuminate, 2-3 in. long, in. broad. I. 

 aspericaulis Baker, 1. c. 



I refer to I. Welwitschii a plant collected by Buchanan (134) in 

 the Shire Highlands; Welwitsch's specimens are from Huilla 

 (LopoUo). 



The following plants described as new have already been 

 published : — 



I. megalochlamys Baker, I. c. 72 = I. pyramidalis Hallier, I. c. 

 152; both authors base their descriptions upon Welw. 6113, and 

 the British Museum specimens go far to reconcile the apparent 

 discrepancies in the two. 



I. bmguellensis Baker, I.e. 69 = Hewittia bicolor W. & A. 



I. xiphophyUa Baker, I. c. 69 = I. UnotepaU Hallier, I. c. 130. 

 Mr. Baker cites Welw. 6101 for this species, but the right number 

 is 6191, as given by Hallier.* 



The following specific names are preoccupied, and I propose to 

 substitute others : 



I. shirensis Baker, I. c. 74, non Oliv. in Ic. PI. 1474 (1884) 



= I. KlRKIANA. 



/. discolor Baker, I. c. 69, non G. Don, Gen. Syst. iv. 270 

 (1837) = I. Bakeri. 



I. acuminata Baker, I. c. 72, non Koem. & Schultes, Syst. iv. 



228 (1819) = I. ZAMBESIACA. 



