2 DIANDRIA. 



ed at the top, spikes oblong obtuse. E.B. 1. 1691. and t.2\Q>7. 



{S.fruiicosa.) 



Sea-coast near Montrose. D. Don. Fl. Aug. Sept. 1/ . 



Differs from the foregoing in being perennial, in its long, straggling 

 branches and short spikes. Stam. mostly two. The various species 

 of Salkornia are used in the south of Europe and northern coasts of 

 Africa in the manufacture of alkali, whence their English name, 



2. HIPPURIS. 



1. H. vtilgaris (Mare's-tail), leaves whorled linear. Lightf. 

 p. 70. E.B.t. 763. 



Hab. Ditches and stagnant waters. Near Edinb., and in Hay, by the 

 sides of lochs. Light/. West end of Duddingston Loch, Edinb., 

 Moiigh. Castle-Semple Loch near Glasgow, Hopk. About Forfar, 

 G. Don. Loch of Clunie^, and marsh of Bonachallv, Mr. Arnott. 

 F/.June. 11. 



Stem erect, simple, jointed. H'horls of about eight leaves. Flowers 

 at the base of each of the superior leaves, of the most simple struc- 

 ture. Germen ovate, inferior, the calyx forming a slightly elevated 

 rim on the top. From the inside of this calyx arises a single stamen, 

 at first shorter than the filiform style, but soon equalling it in length. 

 Anther \ery large, of two rounded lobes, in an early stage having the 

 style between the lobes. -Seed fixed to the top of the cell of the peri- 

 carp, and thus inverted. 



II. DIANDRIA. 



1. MONOGYN[A. 



* Perianth double {having Cal. and Cor.), inferior, monopetalous, 



regular. 



1. LiGUSTRUM. Cor. 4-cleft. Berry 2-celled, with the cells 

 2-seeded. 



** Perianth double, inferior, monopetalous, irregular. Seeds inclosed 

 in a distinct pericarp (Angiospermous) . 



4. Veronica. Cor. 4-cleft, rotate, lower segment narrower. 

 Caps, 2 -celled. 



5. PiNGUicuLA. Cal. 4 — 5-cleft. Cor. ringent, spurred. Caps, 

 1 -celled. 



6. Utricularta. Ca^.2-leaved, equal. Cor. personate, spurred. 

 Caps. 1- celled, opening with a circular fissure. 



^*'^ Perianth double, inferior, monopetalous, irregular. Seeds naked 

 (incorporated with the pericarp, Gymnospermous) . 



7. Lycopus. Cal. tubular, 5-cleft. Cor. tubular, limh nearly 

 equal, 4-cleft, upper segment broader, and notched. Stam. di- 

 stant, simple. 



