1877.] Knowledge of the Burmese Floi^a. 01 



Ludwigia, L. 



Conspectus of Species. 

 Capsules from oLlong to elongate-cylindrical, thick ; seeds densely covering the pla- 

 centas, ,1 X. parvijlora. 



Capsules almost filiform ; seeds in a single row, Z. prostrata. 



1. L. PAEViFLOEA, Eoxb. Fl. Ind. I. 419 ; Schleclitcl. in Coroll. Obs. 

 Hort. Hal. 1854 and in Linn. XXYI. 479 ; Wight 111. t. 101 ; WA. Prod. 

 I. 336 ; DC. Prod. III. 59. {L. peremiis, Miq. Fl. Ind. Bat. I/l, 629, non 

 L. ; L. gracilis, Miq. 1. c). 



Yar. a. Eoxbueghian"A, (L. parvifiora, Eoxb. 1. c, &c.,) capsules 

 sessile or nearly so, 4 — 6 in. long ; calyx-lobes only half as long as the 

 calyx-tube. 



Var. ^. LTTHEOIDES, {L. lythroides, Bl. Bydr. 1134 ; DC. Prod. III. 

 59), caj^sules distinctly pedicelled, from obovate to almost turbinate or 

 oblong, about 2 — 3 lin. long ; calyx-lobes as long as the calyx-tube. 



Hab. Var. a. here and there in Pegu and Martaban, along the larger 

 rivers, as the Sittang &c. ; var. /3. frequent on mud-banks, in swampy places 

 and rice-fields, around tanks and lakes, &c., all over Burma down to Tenas- 

 serim and the Andamans. — Fl. Fr. Sept. — May. 



2. L. PEOSTEATA, Eoxb. Fl. Lid. I. 420 ; DC. Prod. III. 59 ; Wight 

 Icon. t. 762. {L. diffusa, Ham. in Linn. Trans. XIV. 301 ; DC. 1. c. ; 

 Nematopyxisfruticulosa,pusilladiXidiprostrata, Miq. Fl. Ind. Bat. I/l. 

 630). 



Var. a. LUXUEiA]!irs, plant erect and branched, the leaves much larger. 



Var. p. HUMiEUSA, small, prostrate ; leaves small, usually not above 

 \ in. long, more or less blunt. 



Hab. Var. a. not unfrequent in wet places in Pegu and the Anda- 

 mans ; also Ava ; var. /3. on wet sand-banks of rivers, as the Toukyeghat 

 river.— Fl. Fl. H. and ES. 



Trapa, L. 



Conspectus of Species. 



Nut with 2 opposite reflexed bearded spines, T. bispinosa. 



Nut with 2 pairs of opposite spines, T. quadrispinosa. 



1. T. BISPINOSA, Eoxb. Corom. PI. III. t. 234 and Fl. Ind. I. 428 ; 

 DC. Prod. III. 64 ; WA. Prod. I. 337 ; Eheed. Hort. Malab. XL t. 33 ; 

 Miq. Fl. Ind. Bat. I/l. 636). 



Hab. In tanks of Chittagong ; also Ava. 



SAMYDACE^. 



Conspectus of Species. 

 Trib. I. CASEAEIEJS. Calyx free, 5- or 4-merous. Petals none. Stamens 6 — 

 30, inserted in a single row to the calyx -tube, usually alternating with as many stami- 

 nodos. 



