MATERIALS FOE A FLOE A OF FOEMOSA. 233 



Hab. Giochi, leg. G. Nakahaea, Aug. 1905, (No. 300). 



DisTEiB. Central and Eastern Himalaya and the Khasia 

 mountains. China : Hupeh. 



This is near P. pedunculare Wall., 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 Hayata 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-punetata, membranacea, vaginis tubulosis 3 mm. 

 longis hyalinis basi pilis retrorsis instructis. Flores capitellati, capi- 

 tulis bracteis involucralibus 1 suffultis, vel bracteis involucralibus 0, 

 (floribus 1-15, 4 mm. longis), pedunculis 2 mm. longis vel longioribus, 

 apice pilosis glandulosis retrorsis instructis, bracteis (floralibus) ovatis 

 3J mm. longis 2 mm. latis hyalinis pauce glanduloso-punctatis, pedi- 

 cellis h mm. longis, 1-bracteolatis, bracteolis hyalinis ovatis. Perian- 

 thium campanulatum 2 J mm. longum, 4-lobum, lobis ovatis obtusis 

 1 mm. longis. Stamina 5, eglandulifera. Ovarium ovatum f mm. 

 longum, stylo 1^ mm. longo, apice 2-fido, stigmate capitellato. 

 Achœnium l)iconvexum orbiculare vel late ovatum, apiculatum 

 Ig mm. longum, IJ mm. latum, minute tuberculatum nigrum. 



Hab. in monte Morrison, ad 6500 ped. alt., leg. T. Kawakaäu 

 et U. MoEi, Oct. 1906, (No. 2032). 



Near P. glaciale Hook. f. from whicli the present plant differs 

 in liavin'f biconvex nuts. 



