POACEAE 101 
95. Panicum Atlanticum Nash. Densely papillose-hirsute, the hairs on the sheaths 
and upper surface of the leaf-blades exceedingly long. Stems tufted, erect, often from an 
ascending base, 3-5 dm. tall, finally branched, the nodes barbed with spreading hairs : 
sheaths shorter than the internodes ; blades erect, lanceolate, rather firm, the primary ones 
usually 6-8 em. long, rarely longer or shorter, 4-8 mm. wide: panicle 5-7 cm. long, 
broadly ovoid, its branches ascending : spikelets barely exceeding 2 mm. long and about 1.2 
mm. wide, broadly obovoid, pubescent with spreading hairs. 
In dry soil, southeastern New York to Georgia and Mississippi. Summer. 
96. Panicum villosissimum Nash. Whole plant densely pubescent with long 
spreading hairs. Stems 3-6 dm. tall, erect or ascending, the nodes barbed : leaf-blades 
linear-lanceolate, 5-10 cm. long, 4-9 mm. wide, erect, yellowish green: panicle long- 
exserted, broadly ovate, 6-10 cm. long, its branches spreading or ascending, sometimes 
flexuous, the lower ones 3-6 em. long: spikelets elliptic, 2.5 mm. long and about 1.25 
mm. wide, obtuse or acutish, pubescent. 
In alluvial soil, Georgia. Spring and summer. 
97. Panicum xanthospérmum Scribn. & Mohr. Stems tufted, 1-2 dm. tall, hirsute, 
finally branched : leaf-sheaths hirsute ; blades 3-6 cm. long, 5-8 mm. wide, lanceolate, 
pubescent on both surfaces with long rather stiff spreading hairs, those on the upper surface 
the longer: panicle 3-4 cm. long, its branches ascending: spikelets yellowish, about 2.3 
mm. long and 1 mm. wide, elliptic, pubescent with long weak hairs. 
In dry sandy soil, Aiabama. Spring and fall. 
98. Panicum Commonsianum Ashe. Stems tufted, 3-5 dm. tall, finally branched, 
pubescent below with long nearly appressed hairs, the upper portion glabrous or 
puberulent, the nodes bearded with spreading hairs : primary leaves usually 2 or 3 ; sheaths, 
at least the lower ones, pubescent with nearly appressed hairs ; blades erect, lanceolate, 
strigose on the lower surface, the upper surface glabrous or with some long spreading hairs 
toward the base, the primary ones 4-8 cm. long, 3-6 mm. wide: panicle 4-8 cm. long, 
ovate, its branches spreading or ascending: spikelets 2.5 mm. long and about 1.3 mm. 
wide, obovoid, pubescent with spreading hairs, the first scale about 4 as long as the spikelet. 
In dry sandy soil near the coast, New Jersey and Delaware. Spring and summer. 
99. Panicum strictifdlium Nash. Stems tufted, 2.5-5 dm. tall, strongly pubescent 
toward the base with long soft hairs, puberulent toward the summit, finally much branched : 
leaves 3 or 4; sheaths much shorter than the internodes, the lower ones densely pubescent 
with long soft appressed hairs; blades erect or nearly so, rather firm, narrowly lanceolate, 
the upper surface often with a few long scattered hairs, the primary blades 4-7 cm. long, 
3-5 mm. wide: panicle 5-7 em. long, broadly ovoid, its axis and spreading branches mi- 
nutely pubescent : spikelets obovoid, 3 mm. long and about 1.5 mm. wide, densely pubes- 
cent with rather long spreading hairs. 
In dry sandy soil, peninsular Florida. Spring and summer. 
100. Panicum cilifferum Nash. Stems tufted, 2-5 dm. tall, finally much branched, 
densely hirsute below with long nearly erect hairs, sparsely pubescent above: primary 
leaves usually 3, sometimes 2; sheaths densely hirsute with long ascending hairs ; blades 
erect or ascending, lanceolate, the upper surface glabrous or sometimes with some long 
erect hairs near the base, the lower surface strongly strigose, ciliate with long hairs, the 
pour ones 3-8 cm. long, 4-10 mm. wide: primary panicle ample, 6-11 cm. long, 
roadly oval, its branches spreading or ascending : spikelets about 2.75 mm. long and 1-1.2 
mm. wide, elliptic, pubescent with long spreading hairs. 
In dry sandy soil, peninsular Florida. Spring and summer. 
101. Panicum epilifdlium Nash. A glabrous tufted perennial. Stems 2-3.5 dm. 
tall : leaves 2 or 3; sheaths minutely pubescent at the apex, ciliate on both margins with 
long slender hairs; blades widely spreading, linear-lanceolate, 4-7 cm. long, 5-7 mm. 
wide, minutely pubescent on the upper surface between the nerves: panicle 5-7 cm. long, 
ovate, its branches spreading or ascending : spikelets 3 mm. long and about 1.5 mm. wide, 
oval, obtusely apiculate, densely pubescent with short spreading hairs, the first scale about 
2 as long as the spikelet. 
In dry sandy soil, peninsular Florida. Spring. 
102. Panicum pedicellàtum Vasey. A pubescent perennial. Stems 3-4 dm. tall, 
pubescent with short ascending hairs, finally branched : leaves 4 or 5; sheaths shorter 
than the internodes, pubescent between the nerves with short hairs, ciliate on the margins 
with long hairs; blades erect or nearly so, linear-lanceolate, pubescent on both surfaces 
with rather short spreading hairs, usually ciliate at or toward the base, the primary ones 
4-9 cm. long, 2.5-4 mm. wide, those on the branches smaller: panicle 3-4 em. long, nar- 
TOW, its branches erect-ascending : spikelets 4 mm. long and 1.5 mm. wide, the scales 
