MATERIALS FOR A FLORA OF FORMOSA. 935 
Has. Giochi, leg. G. Naxanana, Aug. 1905, (No. 300). 
Disrris. Central and Eastern Himalaya and the Khasia 
mountains. China: Hupeh. 
This is near P. pedunculare Wauu., but differs from it in having 
more slender, and more branched peduncles and shortly spicate, but 
not capitate, sessile flowers. The flowers of P. pedunculare are 
pediceled and capitate. 
Polygonum quadrifidum MHayata sp. nov. Herba_ gracilis, 
glaberrima 25 cm. alta, caulibus glabratis striatis pauce ramosis 
internodiis 4 cm. longis. Folia alterna, subsessilia oblonga, 22 mm. 
longa, 1 cm. lata, apice acuta, basi rotundata in petiolum attenuata, 
utrinque glabra margine albo-marginata, sub lente minute serrulata, 
utrinque glanduloso-punctata, membranacea, vaginis tubulosis 3 mm. 
longis hyalinis basi pilis retrorsis instructis. Flores capitellati, capi- 
tulis bracteis involucralibus 1 suffultis, vel bracteis involucralibus O, 
(floribus 1-15, 4 mm. longis), pedunculis 2 mm. longis vel longioribus, 
apice pilosis glandulosis retrorsis instructis, bracteis (floralibus) ovatis 
34 mm. longis 2 mm. latis hyalinis pauce glanduloso-punctatis, pedi- 
cellis $ mm. longis, 1-bracteolatis, bracteolis hyalinis ovatis. Perian- 
thium campanulatum 24 mm. longum, 4-lobum, lobis ovatis obtusis 
1 mm. longis. Stamina 5, eglandulifera. Ovarium ovatum # mm. 
longum, stylo 14 mm. longo, apice 2-fido, stigmate capitellato. 
Achenium biconvexum orbiculare vel late ovatum, apiculatum 
12 mm. longum, 14 mm. latum, minute tuberculatum nigrum. 
Has. in monte Morrison, ad 6500 ped. alt., leg. T. KawaKxamr 
et U. Mori, Oct. 1906, (No. 2032). 
Near P. glaciale Hoox. f. from which the present plant differs 
in having biconvex nuts. 
