41 
sparingly ciliate on the margins, those on the culm one-third the 
length of the internodes or less, 1.5—2.5 cm. long, those on the 
branches:shorter and overlapping, 1 cm. long or less; ligule a ring 
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. nitidum of Elliott. 
* Panicum Latrrouium L. 
It may be, of interest to call attention to a remark of Trinius 
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, spennehe Sabaieett 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 pg 8 
scattered hairs, pubescent below with short appressed hairs; Or 
Cle ovate or oval, 2.5-6 cm. long, 2-4 cm. broad, its branches ee 
spreading or ascending, 2.5 cm. long or less; spikelets obovate, 
about .65 mm. long, .4 mm. wide; first scale oor ana sega | 
+ Quarter to one-third as long as the spikelet, orbicular-ovate, ot spaces: 
