ME. S, KtTRZ ON INDIAN LEMNACE^.. 265 



LaLoul Lmina minor^ tlie only species known in that district, 

 ascends to ,9500 feet (see specimens collected by Dr. Brandis). 



In working out this small group, I am principally indebted to 

 Dr. T. Anderson for his liberal permission, not only to use the 

 Kerbarium and library at the Eoyal Botanic Gardens, Calcutta, 

 but also hia private collection, 



I. "WoLrriA, Hork. et Schleid. 



(Grantia^ Griff,', Horkelia, Rchb») 



Injlorescentia centralis. Flos masc, I. Ovarium 1-ovulatum* 

 Utrwulu^ monospermua, 



Herbulae minimae, rarissime (in spec. Africanis) magna;, natantes. saepius 

 arrhizEe, frondiculis subtus cellulose buUatis. 



L WoLFFiA DfiLiLii, Schleid, in Linn, xiii. 389; Wedd. Sc. Nat. 3 



ser. xii. 170; Walp, Ann. iii. 496. 

 Frondiculae arrhizae, ^ lirieae longa^, oblongo-globosae, supra stomatiferac 



convexiusculje, subtus globoso-efBatte, laxe irregulariterquehexagono- 



cellulosse, hyalinae. 

 Hab. Very common throughout Bengal! and probably through the 



whole of India. 

 Distr. Egypt; Eastern Java! 

 Var. a. Delilii, frondiculis duplo triplove niajoribus, superficie magis 



suboperculiformi discreta. 



^ff 



Willd 



229 



Var. i9. Schleidmi, frondiculis J lin- magnis, magis cyliudricis, superficie 



saepius convexiuscula. 

 Wolffia Schleideni, Miq. in Ned. Kruidk. Arch. iii. 428; Fl. Ind, BaU 



iii. 221. 

 Lemna globosa, Rab. FL Jnd. iii. 565. 



Both these forms occur in Bengal. I cannot find any specific 

 distinction; they are merely varieties. 



Tab.V. fig, 7, plants of the variety a, natural size; figs. 8, 9, id. magnified ; 

 fig. 10, plants of the variety ^, natural size; figs. 11, 12, id. magnified. 

 2. Wolffia MiCROSCOPiCA,iirMr2:. Frondiculae lineam vix excedentes, 

 ecllulosw, supra planiusculse, subtus in radiculam (?) subcylindricam 

 productae ; pollen glabrum (sec. Griffith). 

 Grantia mieroscopica. Griff. Not. Monocot. 22G, t. 266-263. 

 Hab. Bengal, Griffith. 



I have not yet seen this species, which seems to be a rare one. 



II. Tblmatophace, Schleid. 

 Injlorescentia lateralis. Flares masc. 2. Ovarium 2-00-ovula- 

 tujn. Capsvla memhranacoa, circumscisse dohiscena. 



