66 FLOKA OF JA:\1AICA Pilea 



truncate ; cymes small, subsessile, shorter than the petiole : 

 segments of female perianth subequal ; achene roundish-ovate. 

 (PI. 1, B, f. 7.) 



Union Hill, near Moneague, Prior ! Union Hill, Britton, 2813 ! 



Brandies virgate (slender, straight, erect), covered with minute cysto- 

 liths. Leaves at each node subequal, 1*2-2 cm. br., with very small 

 punctiform cystoliths on both sides; petioles at each node sometimes very 

 unequal, 8-2*8 cm. 1. Female fioivers stalked, pedicels 1*2 mm. 1. 

 Achene roundish-ovate, '8 mm. 1., median segment '8 mm. 1., dorsal 

 appendage tuberculate, lateral segments apiculate, a little shorter than the 

 median segment. 



8. P. alpestris sp. nov. ; dioecious, shrubby, branches glabrous, 

 except for the cilia betw^een the petioles, or with very few short 

 hairs ; leaves of the same pair equal or unequal ; limbs ovate- 

 elliptical to narrowly elliptical, more or less acuminate, base 

 obtuse, 1-2 cm. 1., '5- '8 cm. br. ; cystoliths on upper surface 

 minute, prominent, conspicuous, underneath minute, somew^hat 

 conspicuous ; petioles 5-2 mm. 1. ; stipules triangular-acuminate, 

 about 1 mm. 1.; inflorescence *5 1 cm. 1., male bearing 13 

 clusters, female more lax ; segments of female perianth subequal ; 

 achenes ' 7 mm. 1. P. Parietaria var. alpestris Urh. Symh. Ant. i. 

 295 (1899). (PI. 1, B, f. 8.) 



Blue Mt. Peak, about 7200 ft., Harris ! Fl. Jam. 5273, 5424 ; Hansen. 



A low, much branched shrub, growing in patches and forming a dense 

 undergrowth in the forest. 



Male perianth '5 mm. 1., stalked, pedicels to '7 mm. 1.; segments 

 separate to base, dorsal appendage continuous with segment and equal 

 in length. Female floicers, median segment with small conical dorsal 

 appendage, lateral long acuminate. 



9. P. Weddellii Fawc. (( Bendle in Journ. Bot. I. 177 (1912) ; 

 monoecious, somewhat shrubby ; stem ascending, simple or 

 branched, glabrous ; leaves of the same pair of unequal size, 

 elliptical or narrow-ly elliptical, shortly or long acuminate, acute, 

 base emarginate, entire, 3-nerved, glabrous on both sides or 

 sparsely pilose on upper surface, pubescent on nerves beneath, 

 margin glabrous or sparsely ciliate ; cystoliths on both surfaces 

 minute (above prominent and conspicuous, beneath inconspicuous) ; 

 stipules deciduous, short, semilunar ; cymes paniculate, andro- 

 gynous ; peduncle shorter than the petiole, sometimes a little 

 longer ; lateral segments of female perianth one-half to one-third 

 as long as the median. P. ciliaris var. Rivoriae Wedd. in DC. 

 Prodr. xvi.pt. 1, 114 (1869) (in part). P. Parietaria Griseb. op^ 

 cit. 156 (as regards the Jamaican specimens). (PI. 2, f. 2.) 



Wright ! Masson ! Sivartz ! Bancroft ! McNab ! Bath, Purdie ! Wilson ! 

 Blue Mts., Priori J.P. lUl, Morris [ Catherine's Peak, 4000 ft., Eggersl 

 Portland Gap, 5500 ft.; near Morse's Gap, 4800 ft.; Harris I Fl. Jam. 

 5426, 7351. 



Stem to 9 dm. high. Leaves 1*5-7*5 cm. 1., 1-2*5 cm. br. Stipules 

 5-1 mm. 1. Cymes 1 ox 2 in axils, rose-coloured, Male hud 75 mm. 1.^ 



