IRIDACEAE (IRIS FAMILY) 



303 



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

 green or straw-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. ; 

 Rocky Mts. June, July. 



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

 marked forms intermediate between 8. mucronatum, 8. angustifolium, and 

 S. gramineum. 



8. S. Farwellii Bickuell. Loosely tufted, from a fibrous-sheathed base; 

 stems flexuous, branched, slightly glaucous, 2-3 dm. high, 1-2 mm. broad, 

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

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

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



iowers pale blue, on flexuous exserted })edicels. Local, s. e. Mich. 

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

 rather stouter, the violet flowers on erect or 

 f\Q & only slightly curved pedicels. Sandy soil, 



(\T //O near tne coast ' Mass, to N. J. 



/fP\t f\ if 10 - S> stric tum Bicknell. Bright green, 



// m^^ |(\ 3 dra - !" h J the winged stems 1.5-2 mm. 



I j\ wide, slightly exceeding the scarcely broader 



W III ** \V leaves ; bracteal leaf about 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 green or glaucescent, 1-5 dm. high, 

 the ascending flexuous or even geniculate 

 broad-winged flat stems 2-6 mm. 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 ; S. graminoides Bick- 

 nell.) Wet meadows and 

 damp woods, N. H. to Minn., 

 and south w. Apr. -June. 

 FIG. 607. 



12. S. atlanticum Bick- 

 nell. Loosely tufted, pale 



and glaucous, 2-7 dm. high ; stems wiry and slender, flexuous 

 or geniculate, 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 with pink, 

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

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

 capsules slightly higher than broad, 3-4.5 mm. high. Damp 

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

 608. 

 13. 



607. S. gra 

 x/s. 



ineum 608 _ g> at ] ant icum 



609. S. apiculatum 



S. apiculatum Bicknell. Similar; stems 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. 





