DIANDRIA— MONOGYNIA. Lemna. 31 



3. U. minor. Lesser Bladderwort. 



Spur short, obtuse, keeled, deflexed. Cluster of few flowers. 

 Corolla gaping ; palate nearly flat ; lips undivided. 



U. minor. Linn. Sp. PI. 26. Willd. v.\.\\2. Vahl Enum. v. 1 . 



1 99. Fl. Br. 28. Engl. Bot. v. 4. t. 254. Hook. Scot. 9. Fl. 



Dan.t.\28. Schmid. Ic. 79. t.2l. f.l— II. Schrad. Germ. 



v.l. 56. Ehrh. Herb. n. 62. Beitr. v. 5. 177. 

 Lentibularia minor. Rail Syn. *286. 

 Millefolium palustre, galericulatum, minus. Pluk. Phyt. t. 99. f. 6. 



very bad. 

 Aparine aquis innatans Terevisana, foliis Percepier, capreolis do- 



nata. Bocc. Mus. 2^. t.4, no flowers. 



In ditchesj on spongy bogs, but rare. 



Perennial. July. 



Still smaller than the last. Bladders more numerous, many of 

 them, if not all, attached to the leaves. Fl. about half as large 

 as U. intermedia, pale yellow, streaked j palate not closing the 

 mouth. 



12. LEMNA. Duck- weed. 



Linn. Gen. 478. Fl. Br. 956. Lam. t. 747. Sm. in Rees's 



Cycl. V. 20. Hook. Lond. t. 119. 

 Lenticula. Juss. 19. Mich. Gen. ]5. t. \l. Dill. Gen. 118. t. 6. 



Nat. Ord. Miscellaneee. Linn. 54. Naiades. Juss. 6. Near 

 Hydrocharidece. Br. Pr. 344. Aroidece\ sect. 2, Pistia- 

 cece. Richard. Hook. Scot. 191. 



Cal. of 1 leaf, membranous, torn, evanescent. Cor. none. 

 Stam. lateral, thread-shaped, longer than the calyx, un- 

 equal ; each anther a pair of globes, splitting at the top. 

 Germ, superior, ovate, keeled at one side next the stam. 

 Style columnai-, shorter than the stamens. Stigma ob- 

 tuse. Caps, not valvular, of 1 cell. Seed 1, oval, trans- 

 verse. 



An aquatic genus, now well explained by Prof. Hooker, 

 who, like Mr. Brown, considers it as a reduced or sim- 

 plified Ai-oidea, next akin to Pistia. 



Herb floating, consisting of a simple, flattish, highly vascu- 

 lar, smooth, sometimes laterally proliferous,yro?z^*, with 



• I submit to the use of this tenn, as necessary in this instance and a very 

 few others, though the plants are not cryptogamic. See frons in Iiitrod. to 

 Botany, and Grammar. 



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