TRiGiocHiN SCHEUGHZERIACE^ 677 



SCHEUCHZEBIA 



segments'in 2 Series. Stamens 3-6, with short or elongated 

 filaments and mostly 2-celled extrorse anthers. Carpels 3-6, 

 1- or 2-ovuled, more or less united until maturity. Seeds ana- 

 tropous, without albumen. Embryo straight. 



1 Tri^lochin Leaves all radical ; flowers bractless, in a spikeflike raceme 



terminating a jointless scape: ovaries 3-6, united until ihaturitj'. 



2 Scheuchzeria Flowers bracteate in a loose raceme upon a leafy stem : 



ovaries 3, nearly distinct, at length divergent. 



1 TEIGLOCHIN L. Sp. 338, 



Perennial herbs with; all radical terete or semiterete ligulate 

 leaves with membranous sheaths, and perfect flowers in a naked 

 raceme upon a scape-Uke peduncle. Perianth herbaceous, decidu- 

 ous, of 3 small concave sepals and as many similar petals. Sta- 

 mens 3 or 6, with oval nearly sessile anthers. Ovaries 3-6-celled 

 with sessile stigmas and solitary ovules, separating at maturity 

 from the central axis into as many distinct carpels. Seeds ana- 

 tropous, erect, with membranous testa. Embryo straight, with 

 minute included plumule. 



T. maritima I.. Sp. 339. Kootstock without stolons, often sabligne- 

 ous, the caudex thick, mostly covered with the sheaths of former leaves : 

 scapes stout, nearly terete, j4-2 feet high : leaves semiterete, usually 

 about 1 line wide, shorter than the scape: raceme elongated, often 16 

 inches or more long : pedicels decurrent, 1-13^ Jines long : segments of the 

 perianth 6, each with a large sessile anther at its base : pistil of 6 united 

 carpels : fruit oblong or ovoid, 2)^-3 lines long, obtuse, at base, with 6 re? 

 curved points at the summit : carpels 3-angled. In saltmarshes and saline 

 places, California to Alaska and across the contiheht: abo-in Europe. 



T. palnstris L. i?p. 338. Rootstock short, oblique, with slender fu- 

 gaceoua stolons: leaves linear, shorter than the scapes, 5-12 inches lo.ng, 

 tapering to a sharp point : scapes striate; 8-20 inches high: racemes ■6-12 

 inches long: pedicels capillary, in fruit erect-appressed, 2)^-3 lines long': 

 perianth segments 6, greenish-yellow : anthers 6, sessile : pistil of 3 united 

 carpels: stigmas sessile : fruit linear or clavate: ripe carpels separating 

 from the axis and becoming suspended from its apex, the axis 3-winged'. 

 In hogs, Idaho to Alaska and the northern Atlantic States : also in Europe. 



2 SOHEUCHZERIA L. Sp. 338. 



Bog perennials with creeping rootstocks, erect leafy stems flat- 

 ish leaves and small flowers in a loose terminal racemer. Perianth 

 of 3 oblong sepals and 3 narrower pet^,ls. , , Stamens 6, with linear- 

 oblong anthers and' slender' exsef ted filaments. Ovary of 3 nearly 

 distinct ovoid 1-2-ovuled carpels, becoming divergent coriaceous 

 subglobose follicles, ' dehiscing ventrally. Stigmas flat, sessile. 

 ■Seed ascending, anatropous, with coriaceous testa. Embryo 

 straight, thick, 



8. palnstris L. Sp. 338. Stems solitary or several together, usually 

 clothed at the base with the remains of old leaves, 4-lU inches high : leaves 

 5-16 inches long, exceeding the stem, the uppermost reduced- to bracts: 

 pedicels 3-10 lines long, spreading in fruit : flowers white, few, in a loose 

 terminal raceme : segments of the perianth membranaceous, 1-nerved, IJ^ 

 .linep long : filaments. 2-4 lines long: seedaoyal, brown, 2J^-3 lines long, 



