ALISMACK.S. o5' 



Stamens 6, with oval anthers, on short filaments. Pistil* 

 united into a 3 to 6-celled compound ovary ; stigmas ses- 

 sile : ovules solitary, Capsule splitting when mature 

 into 3 to 6 carpels, which scperate from a central axis.— 

 Herbaceous aquatic or marsh plants, with ensiform rush like leaves, 

 sheathing the base of the slender and joint less scape, and small 

 greenish JJowcrs in a spiked raceme, bractlesz. 



T. MARATIMUM, L. Seaside Arrow -grass. 



Scape an 1 kages fleshy, thickish ; fruit ovate, acutish, of G unitwj oarpela waioh 

 bxj rounded at the base and slightly grooved on the back. 



Salt marshes, rare. July. Scape. IS inches high, from a horizontal iootsto«k. 

 Z*aves iinear, smooth, thick, 6 to 12 inches long, less than a line wide. Fk»mr» 

 grosnLah, 30 W 40 on the obtuicly angled scape, 



2. SOHEUCHZERIA, Linn. 



In honor of the two brothers Scluuchws, Swisa botanists. 



Sepals and petals 6, oblong, acute, persistent, spread- 

 ing. Stamens 6, with linear anthers. Ovaries 4, globu- 

 lar, slightly united at base, with flat sessile stigmas, 2 to 3- 

 ovuled, in fruit forming 3 diverging and inflated capsules, 1 

 to 2 seeded, opening along the sides. — A low perennial bog- 

 herb, with a creeping jointed rootstock, tapering into the ascending 

 simple stem, which is partly sheathed by the grass like leaves, termi- 

 nated by a loose raceme of a few flowers with sheathing bracts, 



S. palustris, L. Marsh JSchcuchzeria, 



Peat bogs, rare. July. A rush-like plant, S to 12 inches high, angular. Ltav*$ 

 4 to inches long, semi-cylindrie. Flowers yellowieh-green, on short pvdiM*ii«, 

 •aca a^iilarj- to a bract. 



Sub-order ii. ALISMEiE. 



Calyx green and persistent. Corolla white, deciduous. 

 Seed campylotropous. — Leaves commonly furnished with a 

 I'ade. 



3. ALISMA, Linn. Water-Plantain. 



Or. alysmos, anxiety, from the supposed remedial prepesfru*. 



Flovters perfect. Petals and sepals 3. Stamens 

 Ovaries and styles numerous, in a simple circle on a flat- 

 tened receptacle, forming coriucious achenia in fruit. — Aqua- 

 tic perennials, with radical several-ribbed leaves, and the tcape with 

 whorlcd panicled branches, bearing small white or pale rose colored 

 flowers. 



02* 



