HITCHCOCK AND CHASE—TROPICAL NORTH AMERICAN PANICUM. 521 
97. Panicum villosissimum Nash. 
p fei nN a) Panicum villosissimum Nash, Bull. 
. 0 Lyons Torrey Club 83: 149. 1896; Contr. 
“A U. & Nat. Herb. 15: 233. 1910. 
“>, wy. ; 
on Opt ly DISTRIBUTION. 
SN SY ad : Dry open woods, eastern United 
OR ba ~ » .3e8| States; alsoin Guatemala. The type 
a Oe / specimen from Georgia. 
, ( GUATEMALA: Guatemala City, 
Fic. 123.—Distribution of P. villosissimum. Mitchcock 9106. 
98. Panicum pseudopubescens Nash. 
Panicum pseudopubescens Nash, Bull. 
Torrey Club 26: 577, 1899; Contr. U. 8. 
Nat. Herb. 15: 235. 1910, 
DISTRIBUTION. 
Sandy open woods eastern United States; 
also in San Luis Potosf. The type speci- 
men from Alabama. 
San Luis Potosi: Without locality, 
Schaffner 146. Fig. 124.—Distribution of P. pseudopubescens. 
SPHAEROCARPA. 
Culmsspreading; panicle nearly as broad as long; spikelets 1.6 
to 1.8mm. long... .....---- 22-222 eee ee eee eee eee eee 99. P. sphaerocarpon, 
Culms erect or ascending; panicle never more than two-thirds 
as broad as long; spikelets 1 to 1.2 mm. long.........-. 100. P. erectifolium. 
99. Panicum sphaerocarpon F1l. 
Panicum sphaerocarpon Ell. Bot. 8. ©. & Ga. 1: 125. 1816; Contr. U. 8. Nat. Herb. 
15: 251. 1910. 
DISTRIBUTION. 
Sandy soil and gravelly banks, eastern United States through Mexico to northern 
South America. The type specimen from Georgia. 
San Luts Porosf: Without locality, Schaffner 147. 
Micnoacdn: Sierra de San Andrés, Ross 381. 
Pursua: Chinantla, Liebmann 327, Teziutlan, Orcutt 3952. 
Veracruz: Orizaba, Amer. Gr. — 
Nat. Herb. 155, Botteri. Ja- a ~aet | Je = 
lapa, Pringle 7883, 8344, Hitch- LW _ 
cock 6607, 6633. rt A JO. 
British Honpuras: Manatee La- ya Ip ome 
goon, Peck 61 (Gray Herb.). Sahn Y = ; 
GuaTeMALA: Guatemala City, NEN et ws wed 
Hitchcock 9105. Coban, Tiirck- ae 
heim 56, 3829. Volcano Pa- igs 5 (* 
caya, Kellerman 6236. 
Costa Rica: Copey, Tonduz11866. 
San Pedro de la Calabaza, Tonduz 10745. P&ramos del Abejonal, Tonduz 7878. 
Panama: El Boquete, Hitchcock 8172. Dolega, Hitchcock 8343. 
VENEZUELA: Without locality, Fendler 1638. 
Fia. 125.—Distribution of P. sphaerocarpon. 
