Pilca UKTICACE^ 75 



•3-2 cm. 1. Male flotvers, pedicel to 3 mm. 1.; perianth 3-3 "5 mm. 1., 

 dorsal appendage linear, "7-1 mm. 1., dotted with brown cystoliths. In 

 one specimen there are sometimes three leaves at a node. 



Var. troyana Ur^h. loc. cif. ; leaves at the base subpeltate, 

 somewhat more acuminate, triplinex'ved ; petioles glabrous. (PI. 3, 

 f. 16.) 



In crevices of rocks ; near Troy, 2000 ft., Harris ! Fl. Jam. 8532. 



Male flower, perianth subglobose, nearly 3 mm. 1. ; appendages tri- 

 angular, obtuse, conspicuously marked with linear cystoliths, about 2 

 mm. 1. 



30. P. radieans Wedd. in Ann. Sc. Nat. ser. 3, xviii. 223 

 (1852) ; monoecious (Swartz), growing and rooting along branches 

 of trees and rocks, glabrous ; leaves ovate or rhomboid-elliptical, 

 sometimes those of a pair unequal, obtuse, base cuneate, with 

 3-4 large crenatures in the upper half, triplinerved, nerves 

 about two-thirds of length of limb ; stipules minute ; rarely 

 flowering ; cymes small, androgynous (Swartz), subsessile. — 

 Griseh. op. cit. 158 ; Wedd. in DC. Prodr. xvi. pt. 1, 148. 

 XJrtica radieans Sw. in Vet. Handl. Stochh. vi. 29 (1785) & Fl. 

 Ind. Occ. 299. (PI. 3, f. 17.) 



Swartz ! Macfadycn ! Wilson ! J.P. 980, Morris ! near Mabess River j 

 Tyre, near Troy, 2200 ft. ; Harris ! between Mansfield and Devils River, 

 Harris d Britton ! Fl. Jam. 7466, 7706a, 9081, 10,574. 



Herb ; stems long (4-5 dm.), slender, branching, flexuose. Leaves 1-2 

 cm. 1., 5-12 mm. br. (sometimes smaller) ; cystoliths linear and fusiform. 

 Floivers " green " (Swartz). Male perianth 2 mm. 1. ; dorsal appendages 

 conical, -75 m. 1. Female flowers not seen. 



31. P. nummularifolia Wedd. in Ann. Sc. Nat. ser. 3, xviii. 

 225 (1851); monoecious, creeping; leaves small, round, crenate 

 ■except at the base, hairy on both sides, 3-nerved ; stipules 

 rounded ; cymes small, dense, unisexual or androgynous ; male 

 terminal about half as long as leaves, female axillary or terminal, 

 pedunculate, not or scarcely equalling the petiole. — Griseh. op. 

 cit. 158 ; Wedd. in DC. Prodr. xvi. pt. 1, 158 ; Urb. Symb. Ant. 

 iv. 204. Nummularia saxatilis &c. Shane Cat. 90 & Hist. i. 

 208, t. 131, /. 4. Urtica nummularifolia Sw. in Vet. Handl. 

 Stochh. via. 63, t. \,f. 2 (1787) & Fl. Ind. Occ. 301. (PL 3, f. 18.) 



On rocks by Hope River, Liguanea, Sloane Herb, iv, 21 ! Swartz ! 

 Shakspear ! Hope Gardens (cult, on tree-fern stems), Fl. Jam. 8360. — 

 Cuba, Porto Rico, Vieques, St. Thomas, St. Cruz. 



Herb ; stems of indefinite length, villose. Leaves 6-15 mm. 1. and 

 about as br. ; cystoliths very minute on both sides ; petiole 3-10 mm. 1., 

 pubescent-pilose. Stipules 1-2*5 mm. 1., scarious. Male flowers with 

 hirsute pedicels 3-5 mm. 1. ; perianth obovoid-globose, to 2*5 mm. 1., with 

 broadly triangular hirsute dorsal appendages (-75 mm. 1.). Female flowers 

 subsessile or pedicellate. Achenc "75 mm. 1., obliquely roundish-ovate, 

 projecting more than double beyond the median perianth-segment (•B-'4 

 mm. 1.), lateral segment less than half as long as median. , 



