IRIDACEAE (iris FAMILY) 



303 



7. S. montanum Greene. Similar, pale green or glaucescent ; spathes pale 

 green or straiv-color, the outer bract 3.5-8 cm. long, the inner 1.5-3.5 cm. 

 long ; capsule whitish-green to straw-color. — Gaspe Penins., Que. ; Mich. ; Minn. ; 

 Kocky Mts. June, July. 



S. INTERMEDIUM Bickuell appears to include inconstant and not very clearly 

 marked forms intermediate between S. mucronatum, S. angustifolium^ and 

 S. gramineum. 



8. S. Farwellii Bicknell. Loosely tnfted, from a fibrous-sheathed base; 

 stems ftexuous, branched, slightly glaucous, 2-3 dm. high, 1-2 min. broad, 

 winged, twice exceeding the slightly broader leaves; bracteal leaf loosely 

 clasping, shorter than the (4-11 cm. long) ctirved slender peduncles ; spathes 

 1.7-2 dm. long, the bracts subequal, yellowish-green, thin and membranous; 

 flowers pale blue, on flexuous exserted 'pedicels. — Local, s. e. Mich. 



9. S. arenicola Bicknell. Similar, but usually blackening in drying, and 



rather storitcr, the violet floivers on erect or 

 only slightly curved pedicels. — Sandy soil, 

 near the coast, Mass. to N. J, 



10. S. strictum Bicknell. Bright green, 

 3 dm. high; the winged stems 1.5-2 mm. 

 wide, slightly exceeding the scarcely broader 

 leaves ; bracteal leaf ahout equaling the strict 

 peduncles, 6-9 cm. long; spathes 1.5-2 cm. 

 long, pale green, tinged with purple, the 

 bracts subequal, or the inner longer ; pedi- 

 cels strict, barely exserted ; flowers violet. — 

 Montcalm Co., Mich. 



11. S. gramineum Curtis. Loosely tufted, 

 bright gi'een or glaucescent, 1-6 dm. high, 

 the ascending flexuous or even geniculate 

 broad-winged flat stems 2-6 min. wide, usu- 

 ally exceeding the grass-like leaves ; bracteal 

 leaf broad, usually shorter than the flat 

 peduncles ; spathes green, erect, the bracts 

 subequal, 1.5-2 cm. long, or 

 the outer somewhat elon- 

 gated ; flowers blue ; cap- 

 sules subglobose, 4-6 mm. 

 high. {S. anceps Man. 

 ed. 6 ; 8. graminoides Bick- 

 nell.) — Wet meadows and 

 damp woods, N. H. to Minn., 

 and southw. Apr.-June. 

 Fig. 607. 



12. S. atlanticum Bick- 

 nell. Loosely tufted, pale 



and glaucous, 2,-1 dm. high ; stems wiry and slender, flexuous 

 or genicidate, narrowly margined, 1-3 mm. wide, much exceed- 

 ing the narrow leaves ; bracteal leaf usually shorter than the 

 slender peduncles ; spathes often oblique and tinged vnth pink, 

 the subequal bracts thin, 1-1.5 cm. long, the outer acute, the 

 inner obtuse; pedicels erect, scarcely exserted; perianth violet; 

 capsides slightly higher than broad, S-4.6 mm. high. — Damp 

 soil, Me. to Vt. and Fla., mostly on the coastal plain. Fig. 

 608. 



13. S. apiculatum Bicknell. Similar ; steins 3 dm. high, 

 nearly or quite twice as long as the narrowly linear grass-like basal leaves ; 

 the pedicels (1-1.8 cm. long) distinctly exserted, and the rather smaller capsules 

 tipped by stout short beaks. — Lake shores, etc., Muskegon Co., Mich. Fig. 

 609. 



607. S. gramineum 



60S. S. atlanticum 



609. S. apiculatum 

 xVs- 



