alismaceje. 872 schedchzeria. 



..Jl^ whorls of 3, as in other species. Barren flowers with 12 — 15 stamens. 

 Petals roundish, white. Aug. 



5. S. pusi'lla. Kvit. Alisma subulata. 



Petioles (leaves?) short, linear, obtuse, summits only foliaceous ; scape 

 simple, shorter than the leaves; flowers few, fertile one solitary, deflexed ; 

 stamens mostly 7. A dimmutive species on muddy banks. Leaves rarely 

 subulate, an inch or two long, less than a line wide. Scape 2 — 4 inches high. 

 Flowers 4 — 7, the lowest one only fertile. Aug. 



Suborder. JUNCAGINE^. 



Sepals and petals both herbaceous (green), or 0. Stamens 6. Ovaries 3 or 6, coherent, 



ovules 1 — 2 in each carpel. Seeds erect, with the embryo straight. Herbaceous, bog 



plants. Leaves ensiform. Flowers in spikes or racemes. 



3. TRIGLO'CHIN. 



Sepals and petals concave, deciduous, the former inserted 

 a litlle below the latter ; stamens 6, very short ; anthers large, 

 extrorse; ovaries 1-ovuled ; stigmas adnate; fruit clavate, 

 composed of 3 — G united, indehiscent, 1-seeded carpels. 



Gr. Tgis three, y^'>>X,n, a corner ; for the three-angled fruit. Root peren- 

 nial. Leaves grass-like, all radical. 



1. T. mari'timum. 



Fruit ovate-oblong, grooved, of G united carpels ; scape longer than the 

 leaves. A rush-like plant in salt marshes and ditches on the sea-coast and at 

 Salina, N. Y., &c. Leaves linear, seniicylindric, smooth, thick, 6 — 12 inches 

 long, less than a line wide. Scape obtusely angled, simple, 9 — 18 inches 

 long, beating a long raceme of 30 — 40 green flowers on pedicels 1 — 2 lines 

 long. Fruit separating into 6 linear carpels, each containing a linear seed. 

 The plant has a sweetish taste, and cattle are fond of it. Jl. Sea Arrow-grass. 



2. T. PALU'STRE. 



Fruit nearly linear, of 3 united carpels ; scape scarcely longer than the 

 leaves. In marshes, Salina, N. Y. Leaves very numerous, fleshy, smooth, 

 very narrow. Scape G — 12 inches high, ending in a laceme with rather re- 

 mote, very small, green flowers on pedicels 2 — 3 lines long. The slender 

 fruit is attenuated at base, obtuse at apex, grooved and margined, consisting 

 of 3 very slender carpels. July. Marsh Arroio-grass. 



4. SCHEUCHZE'RIA. 



Sepals and petals oblong, acute, persistent ; stamens 6, with 

 linear anthers ; stigmas sessile, lateral; ovaries 1 — 2-ovuIed 5 

 capsules inflated, compressed, 2-valved, 1 — 2-seeded. 



In honor of the Scheuchzers, two brothers, distinguished botanists. Root 

 perennial. Leaves cauline, linear, sheathing at base. 



S. PALU'STRIS. 



A rush-like plant, in swamps. Vt. N.York. Rootstock horizontal, fleshy. 

 Stem about a foot high, simple, angular. Leaves seniicylindric, 4 — G inches 

 long, in the barren shoots much longer, sheathing at base. Raceme terminal, 

 5 — 8-flowered. Flowers yellowish green, on short pedicels, each axillary to a 

 bract. Stamens large, exserted, erect. July. Flowering Rush. 



