58. 0NA.GRABIE.2B. 311 



1. Trapa natans, Linn. Sp. PI. ed. 1, p. 120; DC. Prodr. iii. 

 p. 63 ; Debeaux, Fl. Tehef. p. 62 ; Clarke in Hook. f. Fl. Brit. 

 Ind. ii. p. 590. 



Trapa bicornis, Linn.f. Suppl. p. 128 ; DC. Prodr. iii. p. 64; Debeaux, 

 FL Shangh. p. 31. 



Trapa chinensis, Lour. Fl. Cochinch. p. 86; Bretschn. Early Pes. 

 p. 152. 



Trapa bispinosa, Po.vb. Fl. Ind. i. p. 428 ; DC. Prodr. iii. p. 64 ; Clarke 

 in Hook.f. Fl. Brit. Ind. ii. p. 590. 



Chihli: Peking (Bretschneiderl) ; Formosa (Oldham,l22 !) ; 

 Hupeh: Ichang and neighbourhood (X Renrgl). Mus. Brit.; 

 Herb. Kew. 



Recorded from several other provinces, and probably found 

 nearly all over China. 



Widely spread in Europe, Asia, and Africa, extending from 

 subarctic regions through the tropics. 



Trapa bispinosa and T. natans are usually retained as distinct 

 species, and they are here reduced to one, because we failed to 

 sort the Chinese specimens into two species. There are numerous 

 intermediate forms, and if we recognize more than one of thein 

 as a species we may recoguize an unlimited number. 



59. SAMYDACE^l. 



1. Casearia glomerata, Boxb. Fl. Ind. ii. p. 419; DC. Prodr. 

 ii. p. 49 ; Benth. Fl. Rongk. p. 122 ; Clarke in Rook. f. FL 

 Brit. Ind. ii. p. 591. 



Hongkong ( Wright ! Ford?). Herb. Kew. 



Eastern India and perhaps also Malaya. 



2. Casearia membranacea, Ranee in Journ. Bot. 18'J8, p. 113 

 Hainan: near Kiongchau (Sampson, hb. Ranee, 13669!). 



Mus. Brit. 



Possibly the same as the preceding. 



3. Casearia subrhombea, Ranee in Journ. Bot. 1885, p. 323. 

 Kwanotung: Eunyun mountain (Ford, hb. Hance, 22290 !). 



Mus. Brit. 



4. Casearia, sp. 



Formosa (Oldham, 498!). Herb. Kew. 



This was originally distributed as a Euphorbiace.a. There is a 



