DIANDRI A— MONOGYNI A. Lycopus. 33 



L. gibba. Linn. Sp. PL 13/7. Willd. v. 4. 194. Fl. Br. 957. 

 Engl. Bot. v. 18. t. 1233. Hook. Scot. 11. Fl. Dan. t. 1088. 



Hydrophace n. 1898. Hall. Hist. v. 3. 68. 



Lenticula palustris major, inferne magis convexa, fructu poly- 

 spermy Mich. Gen. 15. t. 11./. I. 



In ponds and ditches, but not common. 



Annual. June, July. Mr. Borrer. 



Larger than the last j extremely convex, vascular, and coarsely 



reticulated, at the under side. Cal. scarcely visible, or soon 



disappearing. 



4. L. polyrrhiza. Greater Duck-weed. 



Fronds roundish-obovate; convex beneath. Roots clus- 

 tered. 



L. polyrrhiza. Linn. Sp. PL 1377. Willd. v. 4. 195. Fl. Br. 958. 



Engl. Bot. v. 35. t. 2458. Hook. Scot. 1 1. Wiggers Holsat. 06. 



Fl.Dan.t. 1089. 

 Hydrophace n. 1899. Hall. Hist. v. 3. 68. 

 Lenticula palustris major. Dill, in Rail Syn. 129. t.'A.f. 2. Vaill. 



Par. 114. J.20./.2. 

 Lenticularia major polyrrhiza, inferne atro-purpurea. Mich. Gen. 



16. t. 11./. 1. 



Very common in ditches and standing pools. 



Annual. Fl. not observed in Britain. 



Much larger than either of the 2 last, broadly obovate j obscurely 

 striated, or ribbed, and of a fine green, above ; rather convex, 

 and purple, beneath. Root of many fibres, from near the base, 

 or point of union, of the aggregate fronds. The rare little work 

 of Wiggers records a young German named Graver, as having 

 found the flowers, situated where the fronds overlay each other, 

 in July and August. The seed proved larger and natter than in 

 L. gibba. 



13. LYCOPUS. Gipsy-wort. 



Linn. Gen. PL 15. JussAU. Fl.Br.29. Tourn.t. 89. Lam.tAS. 

 Nat. Ord. Verticillatce. Linn. 42. Labiates. Juss. 89. 

 n. 14 the same. 



Cal. tubular, divided half way into 5 acute segments, per- 

 manent. Cor. tubular, 4-cleft, obtuse; upper segment 

 rather the broadest. Stain, simple, rather prominent, di- 

 stant, spreading upwards. Antli. small, of 2 pointed lobes. 

 Germ. 4-cleft. Style the length of the stam. conical at 

 the base. Stigma cloven. Seeds 4, obovate, quadrangu- 

 lar, obtuse, in the bottom of the calyx. 



Herbaceous, perennial, inodorous, roughish. Stem square. 



VOL. I. D 



