Pilea URTICACEiE 65 



5. P. flavieaulis Urh. & Britfon Symh. Ant. vii. 194, dioecious (?), 

 glabrous, when dry white with cystoliths ; leaves oblanceolate, 

 3-8 cm. 1., apex acute or obtuse, base obtuse, sometimes sub- 

 cordate, entire, 3-nerved or triplinerved, stalked ; stipules 

 lunar ; cymes (male only seen) generally shorter than the leaf, 

 long-stalked, paniculate. (PI. 1, B, f. 5.) 



In crevices of limestone rocks, Peckham woodland, Upper Clarendon, 

 2500-2800 ft., Harris ! Fl. Jam. 10,881. 



SufErutescent ; stem procumbent, and rooting at nodes below, sending 

 up simple erect branches to 6 dm. high. Leaves 1-1*7 cm. br., nerves 

 reaching to upper quarter of leaf , sometimes with two or three minute teeth 

 near apex, cystoliths linear and fusiform, large and conspicuous on upper 

 surface ; petioles 3-8 mm. 1. Stipules 1-2 mm. 1. Male flowers crowded, 

 small, sessile or subsessile, perianth of young flower about '5 mm. 1., 

 opposite pairs of segments unequal; dorsal appendage continuous with 

 segment, broad, obtuse at apex, of larger segments '2 mm. 1. 



6. P. Parietaria Blume Mus. Bot. Lugd. Bat. ii. 48 (1856) ; 

 a monoecious suffrutescent herb ; stems ascending, simple, glabrous ; 

 leaves of same pair somewhat unequal in size, petioles more 

 unequal, elliptical, acuminate, acute, base obtuse, sometimes 

 acute, entire, 3-nerved, upper surface with scattered pellucid 

 hairs, underneath glabrous or with hairs on midrib and nerves, 

 margin ciliate ; cystoliths on upper surface small, linear, incon- 

 spicuous, not prominent, on lower surface conspicuous, large, 

 linear and fusiform ; stipules very deciduous, short, triangular ; 

 cymes paniculate, clusters separate, androgynous, peduncle shorter 

 than the petiole. P. ciliaris Griseh. op. cit. 156 (as regards 

 Jamaica) (non Wedd.). P. ciliaris Fawc. Fl. PL Jam. (non Wedd.). 

 Parietaria foliis ex ad verso &c. Shane Cat. 50 ife Hist. i. 144, 

 /. 93./. 1. Urtica Parietaria L. Sp. PI. 985 (1753). (PI. 1, B, 

 f. 6.) Type in Herb. Mus. Brit. 



On shady rocks, " Sixteen-mile walk," Sloane Herb. ii. 120 ! Houstoun ! 

 Broughtonl Macfadyenl McNabl St. Thomas in the Vale, Priori 

 Cinchona, J.P. 1256, Hartl near Whitfield Hall Works, Harris \ Fl. 

 Jam. 5173. 



Leaves 3-7 cm. 1., 1*2-2 5 cm. br. Stipules about 1 mm. 1. Cymes 

 1 or 2 in axils. Male bud 6-"7 mm. 1., subglobose, flat-topped; dorsal 

 appendages short, mucronate, patent. Achene "6- -7 mm. 1., ovate- 

 elliptical, smooth, projecting beyond the median segment by about one- 

 third ; median segment '5 mm. 1., dorsal appendage somewhat tumid or 

 keeled, ending above in a small mucro ; lateral segments acuminate, more 

 than half as long as the median. 



There is in Herb. Kew. a specimen collected by Dr. Wright in Jamaica 

 with long-stalked leaves nearly 1 dm. 1. and 6 cm. br. which probably 

 belongs here. 



7. P. virgata Wedd. in DC. Prodr. xvi. pt. 1. 112(1869); 

 dioecious, glabrous, leaves 3-6 cm. 1., oblong-lanceolate or narrowly 

 elliptical, acutely acuminate, base emarginate, entire, tripli- 

 nerved ; cystoliths not conspicuous beneath ; stipules very short, 



F 



