9 2 



SCHEUCHZERIACEAE. 



VOL. I. 



i. Triglochin palustris L. Marsh Arrow-grass. 

 Fig. 217. 



Triglochin palustris L. Sp. PI. 338. 1753. 



Rootstock short, oblique, with slender fugacious 

 stolons. Leaves linear, shorter than the scapes, 5'-i2' 

 long, tapering to a sharp point ; ligules very short; scapes 

 i or 2, slender, striate, 8'-2o' high ; racemes s'-i2' long ; 

 pedicels capillary, in fruit erect-appressed and 2$"-3i" 

 long; perianth-segments 6, greenish-yellow; anthers 6, 

 sessile; pistil of 3 united carpels, 3-celled, 3-ovuled ; 

 stigmas sessile ; fruit 3"-3i" long, linear or clavate ; ripe 

 carpels separating from the axis and hanging suspended 

 from its apex, the axis 3-winged. 



In bogs, Greenland to Alaska, south to New York, In- 

 diana and Colorado. Also in Europe and Asia. July-Sept. 



2. Triglochin striata R. & P. Three-ribbed 

 Arrow-grass. Fig. 218. 



Triglochin striata R. & P. Fl. Per. 3: 72. 1802. 

 Triglochin triandra Michx. Fl. Bor. Am. i : 208. 1803. 



Rootstocks upright or oblique. Scapes i or 2, more 

 or less angular, usually not over 10' high ; leaves slen- 

 der, slightly fleshy, nearly or quite as long as the 

 scapes, i"-i" wide; flowers very small, light yellow or 

 greenish, in spicate racemes; pedicels 4"-i" long, not 

 elongating in fruit; perianth-segments 3, stamens 3; 

 anthers oval, large ; pistil of 3 united carpels ; fruit sub- 

 globose or somewhat obovoid, about i" in diameter, 

 appearing 3-winged when dry by the contracting of the 

 carpels ; carpels coriaceous, rounded and 3-ribbed on 

 the back ; axis broadly 3-winged. 



In saline marshes, Maryland to Florida and Louisiana. 

 Also in California and tropical America. June-Sept. 



3. Triglochin maritima L. 



grass. Spike-grass. 



Seaside Arrow- 

 Fig. 219. 



Triglochin maritima L. Sp. PI. 339. 1753- 

 Triglochin data Nutt. Gen. i: 237. 1818. 

 Triglochin maritima var. data A. Gray, Man. Ed. 

 2, 437. 1852. In part. 



Rootstock without stolons, often subligneous, 

 the caudex thick, mostly covered with the sheaths 

 of old leaves. Scape stout, nearly terete, 6'-2 

 high; leaves half-cylindric, usually about i" wide; 

 raceme elongated, often 16' or more long; pedicels 

 decurrent, i"-i$" long, slightly longer in fruit; 

 perianth segments 6, each subtending a large ses- 

 sile anther; pistil of 6 united carpels; fruit oblong 

 or ovoid, 2i"-3" long, ii"-2" thick, obtuse at the 

 base, with 6 recurved points at the summit ; car- 

 pels 3-angled, flat or slightly grooved on the back, 

 or the dorsal edges curving upward and winged, 

 separating at maturity from the hexagonal axis. 



In salt marshes, along the Atlantic seaboard from Labrador to New Jersey, and in fresh or 

 saline marshes to Alaska, California and Mexico. Also in Europe and Asia. July-Sept. 



