Pilea URTICACE^ 65 



5. P. flavieaulis Urb. & Britton Symb. 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 ; stipulea 

 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 ! PL Jam. 10,881. 



Sufirutescent ; 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 regai'ds 

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

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

 /. 93./. 1. Urtica Parietaria L. <S[p. PZ. 985 (1753). (PL 1, B, 

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



On shady rocks, " Sixteen-mile walk," Sloane Herb. ii. 120 I Houstoun 1 

 Broughton I Macfadyen 1 McNah ! Sir. Thomas in the Vale, Prior I 

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

 Jam. 5173. 



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

 1 or 2 in axils. Male hud •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, 



