522 cm. gesnerace^e. [Didymocarpus. 
wide; petioles densely hairy, *25 in. long. Scape sub-terminal 
graceful, 9 to 18 in. long, purple. Flowers few, pendulous, racemose. 
Sepals linear acuminate pubescent, purple. Corolla 1-25 in. long, 
pale yellow, pubescent, tube straight, little dilate. Capsule 1-25 in. 
long, rather thick. Hab. Very local and now scarce, on rocks. 
Malacca, Mt. Ophir (all collectors). 
(50) D. primulina Ridl. Journ. F.M.S. Mus. x. 250. 
A herb with a short closely hairy stem about 1 to 4 in. long. 
Leaves about 6, elliptic round at the tip, base round or shortly 
narrowed, above glabrous, beneath softly densely hairy, edge 
thickly hairy; nerves 8 pairs; 4-5 in. long, 275 in. wide; petioles 
1 to 2 in. long, densely hairy. Scapes very numerous erect slender, 
in upper axils i-ilowered, 2 in. long, hairy. Calyx-lobes linear 
acuminate, *2 in. long. Corolla-tube -5 in. long, upper lobes oblong 
blunt, *2 in. long, lower lip *4 in. long, lobes broad oblong round, 
all primrose-yellow with an orange patch in the mouth. Stamens 
as long as tube. Capsule slender acuminate, 1-5 in. long, glabrous. 
Hab. Dense forest, Selangor, Klang Gates on Bukit Lompat Bayan 
(Ridley and Kloss). 
(51) D. perdita Ridl. Journ. Roy. As. Soc. S. By. 44, p. 54; 
Journ. As. Soc. Beng., l.c. 763. 
Stem creeping, woody, 4 in. long. Leaves elliptic blunt rounded, 
peltate crenulate, 3 in. long, 1-5 in. wide, above scabrid and sprinkled 
with hair, beneath glabrous except hairy nerves and edges; petioles 
1 to 2 in. long, hairy. Peduncles slender, hairy, 4 in. long. Sepals 
lanceolate pubescent. Corolla not seen. Capsule *5 in. long, 
narrowed abruptly into style. Hab. Very rare, only 2 specimens 
seen in a ravine, now probably extinct. Singapore, Selitar (Ridley). 
(52) D. puncticulata Ridl. Journ. Linn, Soc. xxxii. 510; 
Journ. . 4 s. Soc. Beng., l.c. 763. 
Nearly stemless. Leaves crowded elliptic or obcuneate or 
nearly oblanceolate inaequilateral, base truncate, crenate puncticu- 
late hispid; nerves elevate hairy beneath; 3 in. long, 1-5 in. wide. 
Peduncles 3 in. long, slender (thicker in fruit) hairy. Sepals 
lanceolate acute hairy. Corolla -25 in. long, violet; tube short 
broad campanulate, lower lip longer than upper. Stamens very 
short. Capsule -5 in. long, thick hispid. Hab. Johor, Gunong 
Pantai (Ridley). Very rare. 
(53) D. heterophylla Ridl. Trans. Linn. Soc. iii. 329; Journ. 
As. Soc. Beng., l.c. 763. 
Stem short, woolly above, root woody. Leaves crowded, very 
variable obovate oblique or lanceolate blunt, crenulate, dark green, 
centre purplish, glabrous above, reddish with elevate nerves red- 
woolly beneath; 4 in. long, 1-5 in. wide or less. Peduncles slender, 
hairy, 3 in. long, few and short branched. Flowers few. Sepals 
linear pubescent. Corolla campanulate, -25 in. long, violet pubes¬ 
cent. Capsule cylindric acuminate curved, 1 in. long. Hab. 
