156 URTICACE.E. 



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

 places : a in all islands ; /3 was sent from Antigua !, Wullschl. ; y from Jamaica !, Wils., both 

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



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

 heteromorphous, the larger serrate (or pinnatifid), the smaller usually entire : r hap hides on 

 both sides oblique, 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 cuneate, subsessile, the larger (3"'-4"' long) bijugal-pinnatifid, with blunt lobes, 

 the smaller (1"'-2 W long) usually quite entire. — Urtica lucida, Sw. ! 



j8. cuneifolia, Wedd. Leaves cuneate or obovate, 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. ! 



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

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

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



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



§ 2. Leaves 3 (-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. nudicaulis, Wedd. Glabrous ; leaves linear-lanceolate or lanceolate, acumi- 

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

 cymes dioecious, $ peduncled, contracted, with the peduncle 2-3 times exceeded by the leaf, 



? interruptedly spiciform, subsessile, as long as or exceeding the petiole. — Urtica, Sw. I — 

 Stem erect, l'-2' high; leaves l£"-2^" long. 



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



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

 Urtica lanceolata, Poir. 



Hab. Jamaica !, Sw. (a, 0), Mac/., on limestone rocks; [Cuba !, Haiti], 



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

 shortly acuminate, cuneate or rouuded at the base, 3-nerved, quite entire, or repand, usually 

 glabrous above, subcdiate, pubescent beneath or glabrate on the nerves : (one of the pair usually 

 smaller, ovate) -. vhaphides on the upper side punctiform, none linear ; cymes dioecious, $ 

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

 expauded, subsessile, as long as the petiole. — Urtica, L., Sw. ! Obs. P. Rivoerise, 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 !, Pd., Bancr., 

 Al., Wils., common in the mountains, alt. 3000'-400Q'; [Martinique]. 



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

 3-nerved, quite entire, usually hairy above, ciliate, 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. Bur?n. t. 120./. 2. — Leaves 

 5"-l£"long, 2"-f"broai: petiole 24"'-8"' long.— Hab. Jamaica!, Mac/., Wils., in moist 

 places; Domiuica!, Imr. ; [Portorico!, Martinique!, Sieb. Mart. 210, Venezuela!]. 



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

 f 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 dioecious, contracted, 

 twice exceeded by the slender petiole, <J corymbiform-branched, ? spiciform: peduncles in 

 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. 



