344 lll. POLYGONACER. 
Widely spread in India and Malaya, and extending to Eastern 
Australia and Japan, but often existing only as a colonist. 
37. Polygonum pedunculare, Wall. ex Meisn. DC. Prodr. xiv. 
p.133; Hance in Ann. Se. Nat. 5"e série, v. p. 239; Hook. f. 
Fl. Brit. Ind. v. p. 48. 
Cuina: without locality (Forbes!) ; Curexiana: Ningpo 
(Faber!) ; Foxten: Amoy (Hance!) ; Formosa: Kelung (Old- 
ham, 430!); Huren: Ichang and immediate neighbourhood (4. 
Henry!). Mus. Brit.; Herb. Kew. 
Eastern and Southern India, Ceylon, and Malaya to the 
Philippines and Australia. 
38. Polygonum perfoliatum, Zinn. Sp. Pl. ed. 2, p. 521; 
Meisn. in DC. Prodr. xiv. p. 132; Hook. f. Fl. Brit. Ind. v. 
p.406; Hance in Ann. Sc. Nat. 5»e série, v. p. 240; Franch. et 
Savat. Enum. Pl. Jap. i. p. 401, et ii. p. 480; Franchet, Pl. 
David. p. 255. 
Echinocaulos perfoliatus, Hassk. Hort. Bogor. 1844, p. 85. 
Echinocaulon perfoliatum, Hassk. Pl. Jav. Rar. p. 224. 
Chylocalyx perfoliatus, Hassk. in Flora, 1842, Beibl. 2, p. 20; Meisn. 
in Ann. Mus. Bot. Lugd.- Bat. ii. pp. 65 et 212. 
CnirNA: without locality (Millett !); Formosa: Tamsui (Old- 
ham, 420 !); Huren : Iehang and immediate neighbourhood (A. 
Henry !); SzkcnvEeN : Hokiang (Faber !) ; Kwanerune : 
Whampoa (Hance, 762!). Mus. Brit.; Herb. Kew. 
Northern and Eastern India and Malaya to Japan. 
39. Polygonum ($ Bistorta) pergracilis, Hemsl., n. sp. 
Herba perennis, fere omnino glabra vel glabrescens, rhizomate 
tenui, caulibus simplicibus filiformibus debilibus longioribus fere 
pedalibus. Folia tenuia, late cordato-ovata, absque petiolo cir- 
citer pollicaria, obtusa, pilis hispidulis parcissime conspersa, 
obscure reticulato-venosa, radiealia longe graciliterque petiolata, 
caulina breviter petiolata vel subsessilia simul arcte amplexi- 
eaulia; ochrez circiter semipollicares, cylindriez, integre, sub- 
truncate. Flores albo-rubri, minuti, laxiuscule racemoso-spicati ; 
perianthii segmenta subsqualia, oblongo-lanceolata, subacuta. 
Nus (immatura tantum visa) glabra, levis, triquetra, perianthium 
excedens. 
. SZECHUEN: summit of mount Omei (Fuber !). Herb. Kew. 
At first sight this plant suggests the idea of a very slender state 
