Acanthonema.] xcv. GESNERACEiE (baker and clarke). 503 



reduced to rudimentary filaments. Capsule ■£- A in. long. Seeds and 

 pollen as of Streptocarpus. — C. B. Clarke in DC. Monogr. Phan. v. 157 ; 

 Fritsch in Engl. & Prantl, Pflanzenfam. iv. 3 B. 156. C'arolqfritschia 

 diandra, Engl, in Engl. Jahrb. xxvi. 362. 



Upper Guinea. Fernando Po, 200-2000 ft., Mann, 569 ! Cameroons : 

 Cameroon .Mountain, 5000 ft., Mann, 1948 ! Efulen, Bates, 391 ! near Lolodorf, 

 2400 ft., Zenker, 1381 ! Standi, 118 ! 



4. DIDYMOCARPUS, Wall. ; Benth. et Hook. f. Gen. PI. ii. 1021. 



Capsule-valves in dehiscence straight, not twisted spirally ; otherwise 

 as Streptocarpus. — In this one species of Tropical Africa, stem elongate 

 with opposite leaves ; inflorescence axillary, shorter than the petioles. 



Species 90, mostly in South-east Asia, with 3 or 4 in Madagascar, and the 

 following : 



1. D. kamerunensis, Engl, in Engl. Jahrb. xviii. 79, tt. 4-5, fig. 

 F. Stem weak, branched, 1 ft. long ; stem and branches freely 

 rooting. Leaves up to 21 by 1-|- in., ovate, subentire, obtuse at the 

 base, thin, with very few hairs ; nerves 7 pairs; petioles 1-2 in. long. 

 Pedicels axillary, £- £ in. long. Calyx 4-^ in. long ; lobes linear-oblong, 

 with many-celled white hairs. Corolla -J- by \ in., yellow, urceolate ; lobes 

 very short. Stamens 2. Ovary minutely puberulous, not hairy. 

 Capsule f in. long, linear. 



Upper Guinea. Cameroons; Barombi, Preuss, 951 ! 



The only example at Kew has no corolla; and much of the above description is 

 •copied from Engler. As regards the stigma, it appears to me shortly and unequally 

 2-lobed, as in Chirita, and not exactly as figured by Engler. The habit of the 

 species also is much as that of the small Chiritas. 



5. TRACHYSTIG-MA, C. B. Clarke in DC. Monogr. Phan. v. 131. 



Style with 2 short-oblong papillose lobes. Capsule-valves not 

 spirally twisted. Otherwise as Streptocarpus, Sect. Unifoliatce. 

 Species 1, endemic. 



1. T. Mannii, C. B. Clarke in DC. Monogr. Phan. v. 131, t. 14. 



Leaf (a permanent cotyledon ?) 1, spreading flat, sessile, cordate-ovate, 

 3-5 in. in diam., or growing out to 18 in., subentire, pubescent. 

 Peduncles 1-4, 2-4 in. long, carrying many flowers in a loose panicled 

 cyme; pedicels |— 1 in. long, glabrate ; bracts at the divisions A in. 

 long, oblong, or wanting. Calyx \ in. long ; lobes oblong, ending in a 

 gland. Corolla \ in. long, purple. Ovary glabrous ; summit of style 

 scabrid. Capsule f in. long, linear. — Rcettlera Mannii, Fritsch in 

 Engl. & Prantl, Pflanzenfam. iv. 3 B, 148. 



Upper Guinea. Gaboon: Sierra del Crystal, Mann, 1682 ! 



