152 MR. H, N. RIDLEY ON PLANTS 
PILEA ALPESTRIS, Ridl., sp. nov. 
Fruticula, ramis lignosis 2 mm. crassis nodosis. Folia opposita, congesta, crasse 
coriacea, ovata vel elliptica, obtusa, sessilia, 3-5 mm. longa et lata, costa utrinque 
depressa, nervis obscuris, cystolithis linearibus copiosis radiantibus.  Stipule 2, 
membranacee, rufze, ovate, acute, denticulate, 1 mm. longs. Flores masculi 
singuli, axillares, bracteis stipuliformibus 2 lanceolatis denticulatis; pedicelli 
graciles, 3 mm. longi. Perianthium campanulatum, ferme 2 mm. longum, ad basin 
in lobos 4 ovatos obtusos fissum, coriaceum. Stamina 4, multo longiora, filamentis 
linearibus complanatis, antheris tenuibus ellipticis rotundatis albescentibus. 
Flores feminei non visi. 
Camp XII, 10,500 ft. 
The most shrubby of any Pilea I have seen, the habit being that of one of the small 
Vaccinia with quite woody stems and branches and densely crowded thick fleshy 
coriaceous leaves. 
PILEA THYMIFOLIA, Ridl., sp. nov. 
Fruticulus repens, ramis tenuibus vix 1 mm. crassis nodosis. Folia congesta, opposita, 
crasse carno-coriacea, oblonga, 2 mm. longa, obtusa, sessilia, cystolithis plurimis 
radiantibus, costa subtus depressa superne obscura. Stipule 2, minute, membra- 
nacez, rufescentes, lanceolate, denticulate. Flores masculi singuli, axillares, 
subglobosi, 2 mm. longi, pedicellis 0°15 mm. longis. Sepala 4, ad basin connata, 
obtusa, crassiuscula. Stamina 4, filamentis linearibus longioribus, antheris ovatis 
cordatis. Pistillodium minutissimum, conicum. Flores feminei desunt. 
Camps XIII to XIV, 10,500 to 12,500 ft. 
This small shrubby creeping species differs from P. alpestris in the much smaller 
leaves and stems. and rather larger flowers. The leaves possess large numbers of cysto- 
liths, all arranged in a radiating manner, pointing from the base towards the apex along 
the edge of the leaf at the tip, and occasionally irregularly scattered; on the underside 
are circular black depressions. (There are traces of these in P. alpestris.) 
These three species P. helxinoides, P. alpestris, and P. thymifolia, with P. Johniana, 
Stapf, might possibly constitute a distinct genus. The plants seem to be always 
unisexual, and the male flowers always solitary with the parts in fours. 
Lecantuus WIGHTII, Wedd. in Ann. Sc. Nat. sér. 4, i. (1854) 187. 
Camps VIII to IX, 4900 to 5500 ft. 
Distrib. Tropical Africa, India, and Java. 
PELLIONIA FRUTICOSA, Ridl., sp. nov. 
Fruticulus, ramis flexuosis. Folia alterna, subcoriacea, elliptica, obtuse acuminata, 
basi obtusa, ineequilateralia, margine undulata, 9 em. longa, 3:5 em. lata, nervis 
10 paribus superne inconspicuis subtus elevatis brunneis, cystolithis parvis copiosis, 
petiolis 8 mm. longis. Panicula mascula axillaris, 10 em. longa, ramis patentibus 
5 em. longis plurifloris, pedunculo angulato rufo-brunneo 4 cm. longo. Flores 2 mm. 
longi 3 mm. lati, pedicellis 1 mm. longis. Sepala 5, imbricata, oblonga, obtusa, 
