CXXIX. URTICACEA2. 
361 
Pilea.] 
Male cymes few-branched; peduncles 2 in. long; branches 1*25 in. 
long or less. Flowers in small remote clusters 12 in. through, 
white. Females small sessile. Achenes very minute. Hab. Lime¬ 
stone rocks, Perak, Goping (Kunstler). 
(2) P. Grifiithii Bl. Mus. Lugd. Bat. ii. 55; Weddell , Monog. 
231. 
Herbaceous or shrubby. Leaves long-petiolate opposite, one 
rather smaller elliptic or elliptic-oblong blunt acuminate, base 
round blunt or sub-cordate; 3-nerved acute serrate glabrous, 
2- 4 to 3-5 in. long, 1*2 to i*8 in. wide; petioles *6 to 1*4 in. long. 
Panicles axillary peduncled in pairs shorter than the leaves. Hab. 
Malacca (Griffith). 
Only known fromBlume’s description. I have not seen it. 
(3) P. calcarea Ridl. Joarn. Roy. ^ 4 s. Soc. S. Br. 82, p. 196. 
Fleshy herb ascending branched, glabrous, about 12 in. tall, 
intemodes -5 in. long. Leaves fleshy, thin elliptic-ovate blunt 
acuminate, base narrowed often unequal, slightly crenate serrate, 
3- nerved, 1*5 in. long, 75 in. across; petioles 75 to 1 in. long, 
slender. Male cymes -4 in. long or less; peduncle very slender. 
Flowers crowded in very small heads sessile. Perianth-lobes 
oblong, green. Achene oblong-ovoid flattened very shortly beaked 
•05 in. long. Hab. On limestone rocks, Selangor, Batu Caves 
(Ridley). 
(4) P. muscosa Lindl. Collectanea , pi. iv. 
Small fleshy creeping ascending plant, 2 to 8 in. tall. Leaves 
spathulate fleshy, elliptic or ovate, *1 to -3 in. long, blunt; petioles 
short. Flowers in minute axillary cymes very short. Male flowers 
few, very small. Achenes minute. Hab. A garden weed occurring 
in shady spots in Singapore, Malacca, Kwala Lumpur, Penang 
Waterfall, etc. Native of South America. " The Artillery plant." 
20 . PELLIONIA, Gaud. 
Herbs. Leaves alternate chartaceous or fleshy. Male flowers 
in open branched or contracted peduncled cymes. Females usually 
denser. Perianth longer than the compressed tubercled achene. 
Species about 15, Indo-Malaya, Polynesia. 
Half shrubby herbs, leaves petiolate. 
Stem rooting at base only; male cymes peduncled 
branched . . . . . . . . (1) P. Helferiana 
Stem creeping its whole length; male cymes pedun¬ 
cled branched . ..(2) P. javanica 
Stem ascending; male cyme capitulate sessile . . (3) P. Curtisii 
Slender creeper; leaves sessile oblong blunt . . (4) P. Duvauana 
(1) P. Helferiana Wedd. in DC. Prod. xvi. i. 170; Hook. fil. 
F.B.I . v. 561. 
Stem erect rooting only at base, nearly 1 ft. tall. Leaves 
elliptic or ovate acuminate cuspidate, base slightly narrowed, 
