41 



sparingly ciliate on the margins, those on the culm one-third the 

 length of the internodes or less, i .5-2.5 cm. long, those on the 

 branches shorter and overlapping, i cm. long or less ; Hgulearing 

 •of short hairs about .25 mm. long ; leaves thick, erect, lanceolate, 

 1.5-4.5 cm. long, 2-8 mm. wide, acuminate, somewhat narrowed 

 and rounded at the base, with a prominent thick, white, cartilagi- 

 nous, serrulate margin about .25 mm. wide ; panicle ovate in out- 

 line, the primary ones long-exserted, 2.5-4 cm. long, the branches 

 ascending; the panicles on the branches smaller, shorter than the 

 uppermost leaf; spikelets 1.5 mm. long, broadly obovate, obtuse, 

 diverging from the branches; first scale orbicular, glabrous, one- 

 fourth to one-third as long as the spikelet ; second and third scales 

 membranous, 7-nerved, strongly pubescent with short spreading 

 hairs, the latter enclosing a hyaline palet about one half its length ; 

 fourth scale chartaceous, oval, obtuse, 1.25 cm. long, about .8 mm. 

 wide, enclosing a palet of equal length and similar texture. 



Collected by the writer in the low pine land at Eustis, Lake 

 County, Florida, early in June, 1894, no. 925. In habit it is much 

 like P. sphaerocarpon Ell. It is probably the P. uitiduin of Elliott. 



Panicum latifolium L. 



It may be of interest to call attention to a remark of Trinias 

 in relation to this species, although the evidence as to what plant 

 Linnaeus had in mind is so strong that it would hardly seem worth 

 while to allude to it further. Trinius (Mem. Acad. St. Petersb., 

 VI., 3: Pt. 2, 262, 1834), in the latter part of his description of 

 this species, makes the following statement in parenthesis : 



"Ob quam notam et ob Sloanei iconem optimam de Linnaei 



planta dubium nullum." 



Panicum leucothrix n. sp. 



Culms caespitose, 1-4.5 dm, tall, erect or ascending, somewhat 

 branched, sparingly pubescent with ascending hairs^ the nodes 

 glabrous. Sheaths less than one-half as long as the internodes, 2 

 cm. long or less, usually purplish, pubescent with ascending or 

 nearly appressed long white hairs, those at the base of the sheath 

 more dense and spreading ; ligule a ring of long white, erect hairs ; 

 leaves erect or nearly so, lanceolate, 2-6 cm. long, 3-7 mm. wide, 

 acuminate at the apex, truncate or rounded at the partly clasping 

 base, 7-9-nerved, rough and glabrous above or with a few minute 

 scattered hairs, pubescent below with short appressed hairs; pani- 

 cle ovate or oval, 2.5-6 cm. long, 2-4 cm. broad, its branches 

 spreading or ascending, 2.5 cm. long or less; spikelets obovate, 

 about .65 mm. long, .4 mm. wide ; first scale membranous, one- 

 quarter to one-third as long as the spikelet, orbicular-ovate, obtuse. 



