Walkeriane. N. O. Dilleniacez.. 
LAB. CLViIE 
ACROTREMA UNIFLORUM. 
Foliis obovato-oblongis serratis, pedunculis calycibusque unifloris 
longe hirsutis. 
Has. Adam’s Peak, Ceylon. Mrs. Col. Walker (n. 16). 
Radiz perennis. Caulis perbrevis, erectus, simplex, rarius divisus 
vel subproliferus. Folia subradicalia, 8—12, stellatim dispo- 
sita, digitalia ad spithamzeam oblongo-obovata, obtusa, serrata, 
membranacea, basi attenuata, majora petiolata, costata, ner- 
vosa, nervis parallelis fere horizontalibus: pagina superior 
intra nervos, inferior in costa nervisque, marginibus ubique 
longe pilosis. Petioli vaginantes, hirsuti. Pedunculi plurimi, 
axillares, uniflori, graciles, folio multo breviores. Calya e 
foliolis 5 ovalibus hirsutis. Corolla 5-petala, petalis ovalibus 
calyce longioribus. Stamina 5. Anthere poris duobus. Ger- 
men ovale; styli 3. Capsula 3-locularis. Semina numerosa, 
reniformia, punctata. 
This is a very different species of Acrotrema from either of the 
two yet described, A. costatum Jack, from Penang, and 4. 
Wightianum Wall. from Travancora; both of which have many- 
flowered scapes or peduncles. A fourth species has been also 
sent to me from Ceylon, by Mrs. Walker, which may be called— 
A. lanceolatum ; foliis lanceolatis acutis sinuato-dentatis oblique 
nervosis adultis glaberrimis, pedunculis unifloris. 
Has. Adam’s Peak, Ceylon. Mrs. Col. Walker, (n. 15).— 
This appears to have an annual root: and the plant is not 
more than half the size of A. uniflorum, 
Fig. 1. Flower, scarcely expanded. f 2. Expanded flower. 
J. 3. Front and f, 4. back view of astamen. f. 5. Pistil. f. 6. 
The same cut through vertically. 7. Capsule. J. 8. Seed :— 
magnified, 
