156 URTICACE^. 



Hab. Jamaica 1 to Trinidad !, all collect., very common on rocks, and in waste or moist 

 places : o in all islands ; was sent from Antigua I, Wullschl. ; y from Jamaica I, mis., both 

 from Haiti 1 ; [Cuba 1 and Mexico I to Brazil aud Peru !]. 



41. P. lucida, Bl. Glabrous or glabrescent ; leaves euneate or lanceolate, uninerved, 

 heteromorphous, the larger serrate (or pinnatifid), the smaller usually entire : rhaphides on 

 both sides o*%Me, linear ; cymes minute, contracted, peduncled, mostly androgynous ; the 

 peduncle nearly as long as the leaf (sometimes reduced). — A variable, branched, delicate, 

 though suffrutescent herb, the forms of which pass into each other, though looking peculiar 

 in single specimens. 



a. Leaves cuueate, snbsessile, the larger (3"'-4"' long) bijugal-pinnatifid, with blunt lobes, 

 the smaller (l"'-2"' long) usually quite entire. — Urtica lucida, Sw. I 



j3. cuneifolia, Wedd. Leaves cimeate or ohovate, blunt, tapering into the petiole, the 

 larger (8"'-3"' long) with a few serratures towards the top, the smaller (3"'-l"' long) quite 

 entire. — Urtica cuneifolia, Sw. I 



y. serrulata, Wedd. Leaves lanceolate, tapering gradually into the subsessile or petioled 

 base, pointed or bluutish at the top, serrate beyond the middle (the larger 8"'-6"', the smaller 

 6"'-2'" long). — Urtica serrulata, Sw. ! Pilea cubensis, Wedd. I 



Hab. Jamaica!, aU collect., uncommon on rocks and in waste places ; [Cuba !]. 



§ 3. Leaves S{-5)-nerved or triplinerved. 



* Leaves quite entire ; cymes exceeded by the leaves. Stem straight, simple or few- 

 branched, somewhat contracted at the nodes. 



42. P. nutUcaulis, Wedd. Glabrous ; leaves linear-lanceolate or lanceolate, acumi- 

 nate, 3-Eerved, quite entire, shortly petioled : rhaphides on both sides divaricated, linear ; 

 cymes dioecious, S peduncled, contracted, with the peduncle 3-3 times exceeded by the leaf, 



$ interruptedly spiciform, subsessUe, as long as or exceeding the petiole. — Urtica, &>. .' — 

 Stem erect, l'-2' high; leaves 14"-2i" long. 



a. Leaves linear-lanceolate, long-acuminate (3"'-6"' broad). 



j8. lanceolata, Wedd. Leaves lanceolate (or the inferior ovate), pointed (6'" broad). — 

 Urtica lanceolata, Poir. 



Hab. Jamaica !, Sw. (o, /3), Macf., on limestone rocks; [Cuba !, Haiti]. 



43. P. Parietaria, Bl. Branches glabrous ; leaves elliptical-lanceolate or elliptical, 

 shortly acuminate, euneate or rounded at the base, 3-nerved, quite entire, or repand, usually 

 glabrous above, subciliate, pubescent beneath or glabrate on the nerves ; (one of the pair usually 

 smaller, ovate) : rhaphides on the upper side punctiform, none linear ; cymes dioecious, 3 

 contracted, minute, shortly peduncled, usually exceeded by the slender petiole, ? divaricate- 

 exnanded, subsessile, as long as the petiole. — Urtica, L., Sw. I Obs. P. Rivoeriae, Wedd. ! — 

 Stem 2'-8' high, suffrutescent, branched below ; larger ;leaves 2"-l" long, 8"'-5"' broad, 

 smaller usually 6"'-4"' long, pointed : petiole 6"'-4"' long. — Hab. Jamaica !, Fd., Bancr., 

 Al., Wils., common in the mountains, alt. 3000'-4000'; [Martinique]. 



44. P. ciliaris, Wedd. I Stem glabrous ; leaves ovate or ovate-lanceolate, acuminate, 

 3-nerved, quite entire, usually hairy above, oiliate, pubescent beneath, or glabrate on the 

 nerves : rhaphides on the under side linear ; cymes androgynous or unisexual, expanded, 

 peduncled, nearly as long as the elongated petiole. — Plum. Ed. Burm. t. 120./. 2. — Leaves 

 5"-14" long, 2"-i" broad : petiole 24"'-8"' long.— Hab. Jamaica I, Macf., Wils., in moist 

 places; Dominica!, Imr.; [Portoricol, Mai'tinique !, Sieb. Mart. 210, Veuezuela!]. 



** Leaves serrate, glabrous. Stem straight, simple or few-branched beloa. 

 t Cymes shortly peduncled, contracted. 



45. P. reticulata, Wedd. ! {exclus. syn. Sw.). Straight, glabrous ; leaves lanceolate- 

 oblong, pointed, minutely rounded at the base, triplinerved, remotely serrate only towards the 

 top : serratures truncate ; rhaphides linear on both sides ; cymes dicecious, contracted, 

 twice exceeded by the slender petiole, S corymbiform-branched, ? spiciform: peduncles ia 

 both sexes very short.— Stem 1' high ; leaves 3"-2" long, 12"'-8"' broad; petiole 8"'-4"' 

 long. — Hab. Jamaica!, Pd., Wullschl., Westmoreland to Manchester. 



