58 PITTONIA. 
punctate, the lowest a foot long, exactly linear, not more than — 
2 lines wide, 1-nerved, the upper almost filiform: spike 1 to2 | 
feet long, very loose: bracts of the involucre oval to linear oblong, 
those of the latter outline very obtuse and with a narrow scarious 
and colorless margin, ciliolate but obscurely so, almost as ob- 
scurely striate and punctate, except in full maturity: achenes 
setulose-hairy, as long as the subplumose brown pappus. i 
In low pine barrens at Pass Christian, Mississippi, Sept., 1876, : 
Rey. A. B. Langlois, whose specimens were labelled by him 
L. spicata; but the real Z. spicata is a very different plant, its i 
involucral bracts elliptic-oblong (i. e. not broad at summit)’ ; 
strongly striate, punctate, and colored. And no other species 18 i 
known with such a root as this new one exhibits. 
LACINIARIA LANGLoIsII. Allied to Z. pycnostachya, rather : 
taller, from a smaller tuberous root, the herbage altogether of a | 
pale glaucescent-green, the leaves all broader and only obscurely 
punctate; spike less dense and more elongated: bracts of the 
inyolucre of hard texture throughout, strongly hirsute ciliate, | 
wanting the thin purple tips of the kindred species, yet at sum- | 
mit mucronate and rigidly somewhat squarrose: achenes about — 
5 to each involucre, shorter and less prominently angled than in | 
L. pycnostachya, also more pubescen = 2 
Collected apparently only by the late Rev. Father Langlois, 
in wet prairies of Acadia Co., Louisiana, 1 Oct., 1895. Very 
well marked in characters of pale herbage, and wholly firm | 
colorless involucral bracts. : F 
A: 
. He 
he 
os 
entire, others with one or more conspicuous lobes at base of the | 
the stems and peduncle 
E. flagellaris. : 
Cafion of the Limpia, mountains of western Texas, 26 April, | 
1902, S. M. Tracy and F. $. Earle ; also collected by the present 
