300 



BicKNELL : Studies in Sisykinchium 



Vestaburg, Montcalm County, Michi^^in, collected by Professor 

 C F. Wheeler, June 22, 1898, "in sandy soil well in the southern 



limits of the white pine country/' 



Appearing somewhat intermediate betw^een forms of S. Atlauti- 

 and 5. mncronatnm Michx., but unmistakably distinct from 



cum 



cither. 



m aDicuiatum 



Loosely tufted from contractedly branched rootstocks and 



slender wiry 



when dry, about 40 cm. 



high. 



Leaves 



cent not turning dark 

 loosely erect, appar- 



ently few and less than half the height of the stems, 1.5-2 mm. or 

 more wide, acute, thin but firm, closely striate-nerved, very smooth- 

 edged, somewhat withering-persistent and becoming loosely flexu- 

 ousand fibrillose about the base of the tufts ; stems erect, 1-2 mm. 

 wide, narrowly winged; nodes mostly two, separated by an in- 

 tcrt-'al of 4-6 cm., the lower bearing a fdliaceous erect bracteal- 

 leaf and one or two peduncles often much surpassing the second 

 node, which supports a short bracteal leaf and two or three pedun- 

 cles ; peduncles very slender, narrowly margined, smooth or finely 

 denticulate, distinctly constricted at the base of the spathe, erect 

 or divergent, those from the first node sometimes 8 cm. long, the 

 upper ones shorter : spathes often deflected, short and relatively 

 broad, 10-13 mm. long, 2-3 mm. w^ide, the bracts subequal, 

 mostly incurved above, acute, or the inner one sometimes obtuse, 

 prominently striate, broadly hyaline-margined, convex and sharp- 

 edged, the inner one emerging rather abruptly above the clasping 

 base (3-4 mm. long) of the outer one ; interior scales rather broad 

 and blunt, much shorter than the bracts, flowers about 6, blue, 

 rather small ; perianth about 8 mm. long ; stamineal column about 

 4 mm. high ; ovary glandular-puberulent : capsule dark, broadly 

 subglobose, apicukite, sparsely puberulent, on loosely erect, dis- 

 tinctly margined pedicels, 13-17 mm. long. 



Muskegon, Muskeg 



Co., Michigan, J 



J 



In appearance perhaps most suggestive of 5. Atlantiatni^ but 

 not at all that species. 



1*/' 



„ > 



