334 Class XXI. Order II, 



MONCECIA. 

 MOJVANDRM. 



390. CHARA. 



CHARA VULGARIS. Common Char a, 



Stems and branches naked at base ; branchlets round 

 with leafy joints ; leaves oblong-subulate ; bractes 

 shorter than the fruit. 



An immersed plant growing at the bottom of muddy ponds and 

 ditches, with a foetid smell. Stems numerous, a foot long, slen- 

 der, brittle. Leaves about eight in a whorl, subulate, acute. 

 Anther sessile. Germ surrounded with four leaves, and follow- 

 ed by a many seeded berry. July. 



391. ZOSTERA. 

 ZOSTERA MARINA ? L. Eel Grass. Sea Wrack. 



Pericarps sessile. Sm. 



The plant, usually denominated Eel grass in this section of the 

 country, and continually thrown ashore in large quantities by 

 the sea, is probably the Zostera of Europe. The leaves are 

 very long, linear, obtuse, and when carefully broken, discover a 

 multitude of fine internal filaments. The fructification said to 

 grow on a spadix at the base of the leaves, 1 have never been 

 able to discover. 



DIANDRM. 



392. LEMNA. 

 LEMNA MINOR. L. Duck Meat. 



Leaves sessile, nearly flat on both sides ; root soli- 

 tary. L. 



This minute plant, resembling a small floating scale, 'multi- 

 plies extensively in stagnant ponds and ditches, frequently giv- 

 ing a green appearance to their whole surface. The leaves, 

 which constitute most of the plant, cohere two or three togeth- 

 er, are small, ovate, entire, smooth, and slightly convex under- 



