TJRTICACEJ!. 157 



46. P. sessilifiora, Wedd. I Straight, glabrous : leaves elliptical, pointed, cuneate at 

 the base, 3-nerved (or triplinerved), serrate leyond the middle : serraturea 'pointed : rha- 

 jihides linear on the upper side (obsolete or none beneath) ; cymes monoecious, unisexual, 

 contracted, 4 times exceeded by the slender petiole, subsessile, corymbiform-branched, g 

 superior, ? inferior. — Urtica, Sw. I U. variegata, Spreng. Pilea, Seem. I — Nearly allied 

 to the preceding ; leaves 3"-2" long, 18"'-10"' broad : petiole 12"'-6"' long, dilated at the 

 top. — Hab. Jamaica I, Sw., Maef., Wils., Wullschl., in the central and western districts ; 

 [Darien!]. 



tt Cymes exserted, lax, long-pedv/acled. 



47. P. semidentata, Wedd. Straight, glabrous ; /«<sve.s lanceolate or elliptical-lanceo- 

 late (the inferior smaller, elliptical), acuminate, triplinerved, minutely repand-serrulate be- 

 yond the middle : rhaphides linear on the tipper side ; cymes dicecious, expanded, nearly 

 as long as the leaf, long-peduncled, 3 few-dustered, ? many-branched, branches filiform. 

 — TJrtica, Pair. — Stem 1' high, somewha,t succulent ; leaves 3"-4" long, 8"'-20"' broad, 

 callous on the margin ; lateral nerves disappearing in the arches towards the middle of the 

 lamina: petiole 4"'-6"' long. — HaB. Antigua!, Wullschl. ; [Portorico, S. Thomas]. 



48. P. elegans, Wedd. Straight, glabrous ; leaves ovate-oblong, pointleted, or shortly 

 acuminate, triplinerved, repand-serrate with the base entire : serratures bluntish, spreading : 

 rhaphides linear, on the upper side ; cymes monoecious, unisexual, nearly as long as the leaf, 

 long-peduncled, $ contracted, undivided, $ expanded, many-branched. — P. Gondotiana, 

 Wedd. ! — Stem 1' high ; leaves 3"-4" long, li"-l" broad, rounded or minutely subcordate 

 at the base : lateral nerves disappearing in the arches above the middle of the lainina : petiole 

 4"'-6"' long, twice as long as the oblong, deciduous stipules.^HAB. Dominica 1, Imr. ; 

 [Guadeloupe to Venezuela ! and New Granada !J. 



49. P. densiilora, Kth., Wedd. I . Straight, glabrous (or gla;brescent on the leaves be- 

 neath) ; leaves obloug-lanceolate, lanceolate or elliptical, acuminate, 3-5-nerved (or shortly 

 triplinerved), coarsely crenate-serrate with the base entire : sen'atures pointed : rhaphides 

 linear usually on loth sides ; cymes dicecious, expanded, as long as or exceeding the leaf, 

 long-peduncled (or the 3 sometimes contracted and equalling the petiole), many-branched 

 in both sexes : the branches forming interrupted spikes. — Stem 3'-4' high, sufeutescent ; 

 leaves 5"-2" long, 24"'-8"' broad, rounded or minutely cordate at the base : lateral nerves 

 (or first pair of them) disappearing in the arches near the top of the lamina : petiole 8"'-6"' 

 (12"'-2"') long: stipules oblong-lanceolate, 4'" long ; S flower-clusters diam. of a pea, $' 

 much smaller.- — ^Hab. Jamaica!, AL, Wils., March, Wullschl., common. 



50. P. ^audis, Wedd. I Straight, glabrous ; leaves large, ovate, pointleted, usually 

 minutely cordate at the base, triplinerved or 3-nerved, coarsely crenate with the base entire : 

 serratures rounded or bluntish : rhaphides small, linear, on both sides ; cymes dioecious, 

 (rarely monoecious, unisexual,) expanded, exceeding the petiole and exceeded by the leaf, 

 long-peduncled, many-branched in both sexes : the branches forming nearly contiguous 

 spikes. — SI. t. 83. /. 2. — Urtica grandifoUa, L., ex eit. SI. {non Sw.). — Stem several 

 feet high, suflrutescent ; leaves 6" long, 3" broad : lateral nerves as in the preceding, veins 

 straightish, prominulous ; petioles 2" long, nearly as long as the internodes ; stipules large, 

 ovate-oblong, 10'" long ; S spikes oblong. — Hab. Jamaica I, Macf., Jl., Pd., March, in 

 moist woods. 



*** Leaves serrate, hispid, unequal. Stem branched, suffruteseent. 



51. P. rufa, Wedd. I Branches rusty-hispid ; leaves elliptical or elliptical-lanceolate, 

 pointed, sharply serrate, hispid with scattered hairs, triplinerved : one of the pair usually 

 roundish, subsessile : rhaphides linear on the upper side and much smaller ones beneath : 

 stipules roundish, spreading, persistent ; cymes androgynous, contracted, spiciform, shortly 

 exceeding the stipules. — Uriica, Sw. ! — Stem ascending, 1' high; larger leaves 18"'-8"'long, 

 8"'-4"' bread, smaller 4"'-2"' diam. : petiole 4"'-l"' long : stipules if" diam., rusty-mem- 

 branaceous. — Hab. Jamaica!, Sw., Macf., in rocky hills. 



