(48) TENTAMEN FLOE^ LUTCHUENSIS. 315 



Forbes et Hemsl. lud. Fl. Sin. I, p. 60 ; Heury, List Pl. Formos. 

 p. 19. 



S. Alsine, Hoffm. " Fl. Germ. I, p. lo3 "; BuDge Enum. 

 Pl. Cliin. Bor. p. 8. 



S. aquatica, Poll. " Palat. p. 422 "; DC. Prodr. I, p. 

 398 ; Ledeb. Fl. Alt. II, p. loG ; *' Hook. Fl. Bor. Am. I, 

 p. 93 "; Torr. et Gray, Fl. N. Am. I, p. 186 ; " A Gray, 

 Man. Bot. N. Un. St. ed. 1, p. 62." 



^S'. thymifolia, Wall. '' Cat. n. 636." 



S. undulata, Thunb. Fl. Jap. p. 185, ex Fenzl, in Ledeb. 

 Fl. Koss. I, p. 393; Sieb. et Zucc. Fl. Jap. Fam. Nat. in 

 Abhandl. Akad. Muench. lY, pt. 2 (1845) p. 166. 



Larbrcea aquatica, St. Hil. " Mem. Plac. Lib. 81 "; DC. 

 Prodr. III, p. 366 ; " Hook. Fl. Bor. Am. I, p. 93." 



L. uliginosa, Hook. " Fl. Bor. Am. I, p. 93 "; Hook. f. 

 in Journ. Linn. Soc. I, p. 116. 



LuTCHu {Tashiro ! Febr. 1887, flor. et fructif.). 



DiSTRiB. Europe, Siberia, Japan, Formosa, Hongkong, 

 China, the Himalayas, North Africa and North America. 



Arenaria, L. 



A. serpyllifolia, L. ex Hook. et Arn. Bot. Beech. 

 Voy. p. 259. 



LuTCHu, ex Hook. et Aru. 



In his recent revision of the genus Are^iaria (in Journ. Linn. 



Soc. XXXIII, 1898, p. 367), Dr. F. N. Williams has clearly 



shown that ^4. serjnjllifolia, L. and S. leptoclados, Guss. are two 



distinct species ; of tliese, S. leptoclados, Guss. is the only one 



