MR, S. KUBZ ON INDIAN LEMNACE^. 267 



7000', T,T.\; Khudly, valley of the outer Himalayas, Dr. Brandts ! ; 

 Kocksar in Laboul, 9500', Br. Brandisl; Western Java, common 

 from the plains to the base of the hills, 3000' ! ; Singapore and Bangka!; 

 Celebes ! ; Fiji, Seemanuy no. 657 U etc. etc. 

 Distr. Cosmopolitan. 



Lemna minor, Griff. Notul. Monoc. p. 216, t. 262 et 263, is de- 



The 



im 



I have examined the flowers of a great 



fignri 



agree 



lat 



by him. 



2. Lemna oligorrhiza, Kurz. » 



Frondiculse planse, tenuiusculae, subobhque oblongae v. obtusiuscute, 

 2-3-rhizse, subtus purpurese. 



Frondicula; in series circinatas concatenatae, 3-4 hn. longae, 1^-2 hn. 

 ae, textura tenui, supra saturate virides, nitentes, l-S-striatse. 

 Radices binse, saepe tema;, flavidulse v. viridiusculae, flaccidae, longis- 

 simae. Flores ut in Lemna minore, sed filamentum antherse provectioris 

 pauUo brevius. Pollen granulosum. Ovarium 2-, rarissime 1-ovu- 

 latum, rosellum. 



This species seems to be scarce in Bengal ; I found it only in a 

 tank near Seebpore, and in a water-course of the Botanic Gardens, 

 Calcutta, and there always in company with X. polyrrhiza. 



I was inclined for some time to look upon this species as an 

 extreme variety of i. polyrrhiza ; but since I got the flowers, I 

 consider it distinct. It has the size and general form of i, minar, 

 but tbe bright green surface and purple-coloured undersurface of 



L. poTi/rrhiza. 



Tab. V. fig. 1. plants, natural size; f, 2. id. magnified; f. 3. id. from 

 beneath; f. A, flowering frond from beneath; f. 5. inflores<;ence ; 

 f. 6. pollen. 



3. Lemna polybrhiza, Lin. Sp. PL 1377; fVolf, Monogr. 28, 



t. 16^21; JTi/Zrf. Sp. P/.iv.l95; ScAi. Hanrfft. iii. t.3Hl; EnglBot. 



t. 2458 ; Fl. Dan. ii. 610 ; Mert. et Koch, Germ. i. 296 ; Koch, Sgn. 



Germ. 680; Sturmy Heft. 44 ; Kih. Berol. ii, 302. 

 Spirodela polyrhiza, Schleid. in Lin. xiii. 392 ; Kth. En. iii. 7 ; Miq. 



Fl. Ind. Bat. iii. 222, et in ZolL Cat. 75. 

 Lenticula palustris major, VailL Paris, t. 20. f, 2. 

 Lenticula polyrhiza. Lam. Gall. ii. 189, 

 Lenma bannatica, Waldst. et Kit. 



Lemna orbicularis. Kit. in Schult. Flor. ed. 2. 64 ; Rchb. Germ. 138. 

 Lemna thermalis, P. d. B. in Nutt. Gen. i. 19. 

 Lemna orbiculata, Rxb. FL Ind. iii. 365. 

 Lemna major. Griff. Not. Monoc. 216, t. 264. 



