86 THE BOTANICAL MAGAZINE. [Vo i. xxm. No. ess. 



dicans Wedd. in which the leaves are much larger and more 

 attenuated at the apex. The male plant is yet unknown. 



Pilea Hamaoi Makino in Bot. Mag., Tokyo, X. (1896) 

 p. 364. 



A monoecious annual, 6—30 cm. in height. Stems divided 

 from the ascending rooting base and often branched below, 

 obtusely tetragonous, glabrous, succulent, smooth, shining, 

 fleshy, greenish-pellucid ; internodes elongated. Leaves op- 

 posite, long-petiolate, subrhombeo-ovate, obtuse, broadly 

 cuneate towards the base, crenate, triplinerved and veiny, 

 green above, paler beneath, very sparingh- piloso-pubescent 

 above or glabrous, distributed with gracile and linear cystoliths, 

 thin, 1—4 cm. long, §-3 cm. wide ; petiole gracile, shorter than 

 the blade, \— 2 cm. long ; stipule small, oval, rounded at the 

 apex, entire, hyalino-membranaceous, persistent. Cj-me dense, 

 axillary, shorter or longer than the petiole, sessile, mixed with 

 male and female clusters ; peduncle ramose, secundly flowered ; 

 bracts deltoid-ovate, obtuse or acutish, hyaline ; bracteoles 

 minute, subulate, hyaline. Male-flowers minute, pedicellate, 

 about 1mm. long. Perianth-segments 2, hyalino-membrana- 

 ceous, rotundate, concave, rounded at the apex. Stamens 2, 

 scarcely exserted ; filament subulato-filiform. Female-flowers 

 shortly but stoutly pedicellate. Perianth-segments 3, hyaline 

 towards the margin, 2 of them much larger than the other 

 one, the larger ones scarcely unequal, ascending-erect, recurved 

 above, ovato-elliptical or oblong, acute at apex and mucronate 

 under it, concave, green and maniefstly carinate dorsally, about 

 3mm. long in fruit, the smaller one ovato-lanceolate, acuminate. 

 Staminodes 3, much shorter than the perianth-segments, ob- 

 ovate to oblong, obtuse, inflexed in or above the middle. 

 Ovary narrowly ovate, compressed, smooth, spotted, shorter 

 than the larger 2 perianth-segments ; stigma minute, penicillate. 

 Nut sessile, ovate, shortly attenuated towards the apex, com- 

 pressed, smooth, mottled with brown, slightly shorter than the 

 persistent perianth-segments, lf-2mm. long. 



