Pilea.] 
TTRT1CACEJE. 
275 
4. P. urticifolia, Blume , .Botf. Lug , Bat. ii. 47. A monoicous 
perennial, with firm erect branched csespitose stems 1-lf ft. long, 
naked in the lower half. Leaves opposite or the upper whorled, ovate 
or oblong-rhomboid, membranous, acuminate, rounded or cuneate at 
the base, broadly inciso-crenate, triplinerved or penninerved, f-lf in. 
long, often purplish beneath; petiole £ in. long; stipules minute, 
deltoid. Cymes few-flowered, usually lax and peduncled, sometimes 
clustered and sessile. Male perianth T x ¥ in. long, with hyaline segments 
distinctly mucronate below the tip. Achene ovoid, compressed, ex- 
ceeding the female perianth, wrinkled, distinctly bordered. Urtica 
pendula Willd. ; Bojer , Sort. Maur. 293. Boehmeria urticsefolia, 
Spreng. ; Bojer, Hort. Maur. 294, Pilea rupipendia, Wedd. in DC. 
Prod. xvi. 123. 
Mauritius, common in forests throughout the island. Also Bourbon and East 
Tropical Africa. I have ascertained, by inspection of the type specimen from 
Bourbon, gathered by Thouin, now in the Smithian herbarium, that this is Barietaria 
urticifolia , Linn. fil. Suppl. 434. 
5. P. luicens, Wedd. in DC. Prod. xvi. 130. A dioicous glabrous 
perennial, with erect stems 4-5 feet high. Leaves opposite, the 
upper internodes |-1 in. long, ovate, membranous, scabrous, acute or 
acuminate, distinctly triplinerved, 3-4 in. long, with numerous broad 
teeth ; petiole 1 -2 in. long ; stipules minute, deltoid. Cymes 1-2 
in. long, usually in pairs, with lax spreading slender branches bearing 
small clusters of flowers. Male perianth under in. long, the whitish 
segments mucronate below the tip. Achene brown, glabrous, com- 
pressed, very small Urtica cuspidata, Willd.; Bojer, Sort. Maur. 
293. U. triplinervia, Poir. ; Bojer, loc. cit. 
Mauritius, in the forests of the Pouce range, etc. Also Bourbon and Malay 
isles. 
6. P. cuneiformis, Wedd. in DC. Prod. xvi. 133. A monoicous glab- 
rous perennial, with densely tufted branched stems, varyingfrom a couple 
of inches to a foot long.’ Leaves crowded, opposite, subcoriaceous, 
oblanceolate-rhomboid, varying from £ in. to 3 in. long, distinctly tri- 
plinerved, obtuse or acute, toothed in the upper half, cuneate and 
entire in the lower half ; petiole very short ; stipules deltoid, very 
minute. Cymes many-flowered, dense, deltoid, sessile in the axils of the 
leaves. Male flowers pedicillate, T x ¥ in. long, the segments mucronate 
below the tip. Achene ovoid, smooth, rather longer than its 
perianth. Urtica cuneiformis, Poir. ; Bojer. Sort , Maur. 293. 
Mauritius, in rocky woods of the Pouce range, etc. Endemic. 
7. P. atroviridis, Baker. An erect monoicous perennial, with 
tufted wiry branched stems a foot long. Leaves opposite or the upper 
4-nate, oblong-rhomboid, subobtuse, dark green, distinctly triplinerved, 
f-J in. long, inciso-crenate in the upper half, crenate and entire in the 
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