HITCHCOCK AND CHASE—-NORTH AMERICAN PANICUM. 311 
DISTRIBUTION. 
Tn pine lands, hammocks, and sandy woods, South Carolina to southern Florida. 
SoutrH Carona: Isle of Palms, Ball 791, Chase 4537, 4549, Hitchcock 421. 
Fiorina: Duval County, Curtiss 
3600 A in part (Gray Herb.); 
St. Augustine, Ricker 9438; Ce- 
dar Key, Combs 793; Apa- 
a Le 
Lr 
J-n= = 
lachicola, Chapman; Pensa- 
cola, Tracy 8428; Grasmere, 2 
Combs 1053; Gainesville, Chase bine i maga ay} 
4241, 4258, Combs 737; Homos- tee Ite 
sassa, Combs 9264; Crystal, oe 
Combs 1023; Clarcona, Pieters \ 
116; Orange County, Baker 69; SEMAN Moa 
Eustis, Chase 4063, 4122, Nash Fig. 351.—Distribution of P. equilaterale. 
45 in part, 1120, 1674; Clear- 
water, Tracy 7167; Palma Sola, Tracy 6713 in part; Sneeds Island, Tracy 6460, 
7050, 7051 in part; Miami, Chase 3908, Hitchcock 574, 633, 653, 655; Ormond, 
Hitchcock 575. 
/ 188. Panicum albomaculatum Scribn. 
Panicum albomaculatum Scribn. U. 8. Dept. Agr. Div. Agrost. Cire. 19: 2. 1900. 
“Dry rocky hills, Patzcuaro, State of Michoacan [Mexico], October 10. C.G. Pringle, 
No. 5203, 1892.’’ The type, in Hitchcock’s herbarium, consists of a tuft of primary 
culms with mature panicles, the culms beginning to branch from the lower nodes. 
DESCRIPTION. 
Vernal culms tufted, 50 to 100 cm. high, arising from a knotty crown, erect, slender 
but stiff, minutely puberulent between the striz, at least below the glabrous nodes; 
sheaths long, the lower overlapping, minutely puberulent, more or less mottled with 
white spots, densely short-ciliate on the margin; ligules about 0.2 mm. long; blades 
firm, spreading or ascending, reflexed when old, 
8 to 17 cm. long, 9 to 15 mm. wide, linear- 
lanceolate, acuminate, rounded and ciliate at 
the base, roughish on the upper surface and 
with a narrow line of appressed pubescence 
along the very scabrous margins, glabrous or 
obscurely pubescent beneath; panicles long- 
exserted, ovate in outline, 10 to 16 cm. long, 
two-thirds to three-fourths as wide, loosely flow- 
ered, the axis and ascending branches glabrous; 
spikelets 2.8 mm. long, 1.2 mm. wide, obovate 
elliptic, obtuse, sparsely pubescent; first glume 
nearly or quite half the length of the spikelet, obtuse, or subacute; second glume 
and sterile lemma equaling the fruit at maturity; fruit 2.2 mm. long, 1.2 mm. wide, 
elliptic, subacute. 
Autumnal form not known. 
Probably most nearly related to P. equilaterale Scribn. 
Fig. 352.—P. albomaculatum. From 
type specimen. 
