-840 111. POLYGONACER. 
P. cuspidatum, Sieb. et Zucc., but we refrain from reducing it, 
as we have not dissected the flowers. 
24. Polygonum glabrum, Willd. Sp. Pl. ii. p. 447; Meisn. in 
DC. Prodr. xiv. p. 114; Benth. Fl. Hongk. p. 288; Hook. f. 
Fl. Brit. Ind. v. p. 84; Wight, Ic. Pl. Ind. Or. t. 1799 ; Hance 
in Ann. Sc. Nat. 5™ série, v. p. 237 (var. fucatum) ; Henriques 
in Bol. Soc. Brot. ii. p. 143. 
Carna: without locality (Forbes!); Huren: Patung district 
(A. Henry!); KwaNarUNoG: various localities (Hance, 1117, 
10507 ! Callery!) ; HAtvaAN (A. Henry!). Mus. Brit. 
Tropical and subtropical regions in Asia, Africa, and America. 
/ 25. Polygonum (§ Fagopyrum) gracilipes, Hemsl., v. sp. 
Herba annua, erecta, ramulis floriferis pendulis, 6-24 poll. 
alta, parcissime hispidula, caulibus gracilibus multistriatis plus 
minusve ramosis. Folia longe graciliterque petiolata, membra- 
nacea, cordato-ovata vel cordato-hastata, vel interdum triangu- 
lari-cordata, absque petiolo usque ad 2 poll. longa, sed sepius 
breviora, obtusiuscula, interdum obscurissime pauci-lobulata, 
utrinque precipue secus venas hispidula; petiolus filiformis, lami- 
nam equans vel brevior; ochres parvi, maxime oblique, integre. 
Flores glabri, haud lineam longi, Jaxissime racemoso-spicati, 
pedunculis axillaribus elongatis fere capillaribus pendulis ; peri- 
anthii fere 5-partiti segmenta subzqualia, late obovata ; stamina 
8; styli 3, distincti, patentes vol recurvi, stigmatibus capitatis. 
Nux glabra, nitida, acute triquetra vel trialata; cotyledones 
latissime leviter convolute vel complicate. 
Huren: Patung district (A. Henry, 1807 partim, 4742, 4789, 
5057 !); SZECHUEN : mount Omei at 3000 to 4000 ft. (Faber !). 
Mus. Brit.; Herb. Kew. 
The elongated very slender inflorescence distinguishes this 
species from the rest of the section. The cotyledons are only 
slightly convolute, or hardly more than folded a little obliquely 
across each other. There scems to be every gradation between 
the very broad much-convolute cotyledons of Polygonum Fago- 
pyrum, L., and the straight narrow embryo of the majority of 
the figured Polygoni. P. Gilesii, Hemsl. (Hook. Ie. Pl. t. 1756), 
is exactly ntermediate in character. 
26. Polygonum Hydropiper, Zinn. Sp. Pl. ed. 1, p. 3615 
Meisn. in DC. Prodr. xiv. p. 109; Benth. Fl. Hongk. p. 288; 
