678 OBDEa 135.— ALISUAOa^ 



cellato ; bracts broad-ovate, short-pointed ; fil. hairy, longer than ths anthers ; ad«. 

 obovate-falcato. — River swamps. Conn. ? Ta. to Fla. and La. (Hale). Stalks stout, 

 3f or more, according to tiie depth of water. Leaves thick and leathery, 8 to 14', 

 the veins diverging from the midvein. crossed by the veiulets. Fls. white, showy. 

 (S. falcata Ph.) 



8. 'I Very slender, erect, with nearly linear leaves ; bracts and sep. scabrous. — 

 La. to Tex. 



4 S. graininea Mx. hos. ovaie-laticeolate, varying to linear, rarely sagittate; 

 scape erect, slender, longer than the leaves ; lower whorls fertile ; all the pedicels 

 slender, equal ; filaments short as the antlJers ; ach. beakless. — In shallow water 

 or mu4 common. Lvs. commonly very narrow, attenuate-pointed, 4 to 12' or 

 more. Scape 5 to 20' in height, the pedicels 1' or less. Mowers small, 8 or 9'' 

 diam., white ; stam. few. The forms with lance-ovate leaves constitute a well 

 marked variety. (S. simplex, Ed. 2.) 



5 S. pusilla Nutt. Petioles (leaves?) .short, linear, obtuse, summits only folia- 

 oeous ; scape simple, shorter than the leaves ; fls. few, fertile one solitary, deflexed ; 

 star>i. mostly '1. — A diminutive species on muddy banks, N. Y. to Ga. Leaves rarely 

 subulate, an incli or two long, less than a line wide. Scape 2 — i' high. Flowers 

 1 — 7, ihe lowest one only fertile. Aug. 



6 S. nutans Mx. Lvs. floating, oval-lanceolate, obtuse, 3-veined, tapering to the 

 base, lower ones subcordate ; scape simple, fsw-flowered ; lower ped. elongated. 

 In water, Penn. (Muhlenberg) to Car. Scape mostly erect, 3 — 6' long. Leaves 

 1 — 2' long. Flowers few, small, the upper sterile (Elliot). 



7 S. uligindsa Engelm. Lvs. oval-sagittate, rounded-obtuse, lobes triangular; 

 scapes several, as tall (G — 10 ) as the lvs; fls. in pairs, the lower pair (fertUe) on 

 thick pedicels, longer than Iho upper; bracts obtuse; ach. broad-obovate, long- 

 pointed. — St. Louis, perhaps not within our limits. 



4. TRIGLO'CHIN, L. Arrow Grass. (Gr. rp/f, three, ■y^.oix'^it " 

 corner ; on account of the S-angled fruit.) Sepals and petals concave, 

 deciduous, the former inserted a little below the latter ; stamens 6, very 

 rfhort ; anthers large, extrorso ; ovaries 1-ovulod ; stigmas adnate ; fruit 

 (.•.lavate, composed of 3 — 6 united, indehisoent, 1-seeded carpels. — 2J! Lvs. 

 grass-like, all radical. 



1 jP. maritimuiu L. i^Vwii ovate-oblong, grooved, o/6 ««i'fcdcar7)ek ; scape longer 

 than the leaves. — A rush-like plant in salt marslies and ditches on the sea-coast, 

 and at Salina, N. Y., also lake shores, "Wis. 1 Leaves linear, semi-oylindric, smooth, 

 thick, 6 — 12' long, less than aline wide. Scape obtusely angled, simple, 9 — 18' 

 long, bearing a long raceme of 30 — iO green flowers on pedicels 1 — 2" long. 

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

 has a sweetish taste, and cattle are fond of it. July. 



2 T. palustre L. Fruit nearly linear, of" united carpels ; scape scarcely longc' 

 than the leaves. — In marslies, Salina, N. Y. N. to Arc. Am. Leaves very nu- 

 merous, fleshy, smooth, very narrow. Scape 6 — 12' high, ending in a racem'- 

 with rather remote, very small, green flowers on pedicels 2 — 3" long. The slen- 

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

 of 3 very slender carpels. July. 



5. SCHEUCHZE^RIA, L. (To the Scheuchzers, two brothers, distin- 

 guished botanists.) Sepals and petals oblong, acute, persistent ; sta. 6, 

 with linear anthers; stigmas sessile, lateral ; ovaries 1 — 2-ovulcd; cap- 

 sules inflated, 'compressed, 2-valved, 1 — 2-seeded. — 71 Lvs. caulinc, lin- 

 ear, sheathing at base. 



S. paltistrls L. A rush-like plant, m swamps, Tt. lo Penn., rare. Root-stock 

 horizontal, fleshy. Stem about a foot high, simple, angular. Leaves semi-cylin- 

 dric, 4 — G' long, in the barren shoots much longer, sheathing at base. Raceme 

 terminal, E — 8-flowered. Flowers yellowish-green, on short pedicels, each axil- 

 lary to a bract Stamens largo, exscrtcd, erect. July. 



