302 



IIUDACEAE (lllIS FAMILY) 



a. Spathes peduncled from the axil of the leaf-like bract c. 



c. Old leaf-bases persisting as tufts of straight bristle-like fibers. 



Capsules pale straw-color or whitish, y— 4 mm. high .... 



Capsules dark brown, 4-() mm. high 



c. Old leaf-bases soon deciduous, or, if persisting, merely loose irregular 

 soft shreds d. 

 d. Capsules pale straw-color or whitish ; peduncles and pedicels strictly 



erect 



d. Capsules brown or drab. 



Inner bract of the spathe 1.5-3 cm. long ; stems broadly w-inged. 

 Pedicels loosely spreading, much exceeding the inner bract . 

 Pedicels strongly ascending, rarely exceeding the inner bract . 

 Inner bract of the spathe 1-1.5 cm. long ; stems slender and nar- 

 rowly margined. 



Capsules not beaked 



Capsules tipped by a short stout mucro 



8. S. FarwelHi. 



9. S. arenicola. 



10. S. strictum. 



11. S. gramineum. 

 6. S. anguHtifoliuin. 



12. S. atlanticxtm. 



13. S. apiculatum. 



603. S. afbidum 



1. S. hastile Bicknell. Stiff and erect, dull green, about 4 dm. high, the 

 stem (1-1.5 mm. wide) narrowly margined but not v'inged; leaves firm and stiffs 

 slender and conciuplicate, barely 1 mm. broad, except at the flat- 

 tened base ; the 2 spathes closely sessile, each 4-bracted, the lance- 

 attenuate strongly nerved inner bracts 1.5-2.5 cm. long, much 

 exceeded by the linear outer bract ; pedicels barely exserted 

 beyond the inner bracts. — Sandy shores, Belle Isle, Detroit R., 

 Mich. May, June. 



2. S. albidum Raf. Erect, pale green or glaucous, 1.5-4.5 dm, 

 high ; stems 1-3 mm. wide, usually twice exceeding t\\Q flat leaves ; 

 spathes with lance-acuminate pale or purple-tinged inner bracts 

 (1.3-2.3 cm. long), usually twice exceeded by the erect outer 

 bract ; pedicels vnth slightly spreading exserted tips ; floioers about 

 1 cm. long, iGhite to violet ; capsules subglobose (2.5-4 mm. high), 

 pale straw-color. — O. and w. Ont. to Wise, and southw ; locally 

 introd. in Ct. May, June. Fig. 603. 



3. S. flaviflbrum Bicknell. Erect (2-2.5 dm. high), pale green or glaucous ; 

 stems flat, wing-margined, 1.5-3 mm. broad, usually exceeding the flat slightly 

 broader leaves ; bracts of the spathe pale green with conspicuous 



narrow hyaline margins, the inner bract 2-3 cm. long, twice 

 exceeded by the outer ; pedicels shorter than the inner bract. — 

 Open woods, borders of prairies, w. Mo. May, June. 



4. S. camp^stre Bicknell. Caespitose, glaucous, slender (1-5 

 dm. high); the flat stems (1-3 mm. broad) vnnged, somewhat 

 exceeding the leaves ; spathes gibbous, green or tinged with pink, 

 the outer bract (2.5-4.5 cm. long) vnth margins free to the base, 

 rarely twice exceeding the inner; pedicels with curved tips, 

 equaling or exceeding the inner bract ; pjerianth pale blue or 604. S. campestrt 

 white; capsules 2-4 mm. high. — Prairies, Wise, to N. Dak., ^Vs- 

 and southw. Apr.-June. Fig. 604. 



5. S. mucronatum Michx. Similar but greener; stems 0.5-1.5 mm. broad, 

 narrowly winged, usually twice longer than the slightly broader leaves ; spathes 



usually purple-tinged, not gibbous, the outer bract with the mar- 

 gins united a little above the base, 2-7 cm. long, the inyier 1-2 cm. 

 long; perianth violet (rarely white) ; capsules straw-color or 

 greenish-yellow. — Meadows, fields, and open woods, w. Mass. to 

 Va. and Mich. May, June. Fig. 605. 



6. S. angustifolium Mill. Erect or ascending, 

 stiff, glaucous, 1-5 dm. high ; the simple (rarely 

 forked) stems 1.5-3 mm. wide, distinctly winged, 

 exceeding the scarcely broader leaves ; spathes green, 

 rarely purplish, the outer bract vnth margins united 

 3-6 mm. above the base, 2-6.5 cm. long, the inner 1-3 cm. long ; 

 perianth violet (rarely white) ; capsule.'^ dull broimi or purple- 

 tinged. — Meadows, fields, and damp sandy soil, Nfd. to B. C, 

 s. to Va., Pa., Mich., Minn.; and in the Rocky Mts. May-July. 606. s. angusti 

 Fig. 606. folium xVg. 



605. S. mucro- 

 natum X 2/3. 



