198 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
DISTRIBUTION. 
In marshes and swampy woods, southeastern New Jersey to Florida, west to Missis- 
sippi; also in the Bahamas and Cuba. 
New Jersey: Cape May, Stone in 1909. 
Viraria: Lynn Haven, Chase 5417, Hitchcock 356. 
Frioripa: Levy County, Combs 803; Titusville, Chase 3992; Miami, //itchcock 706, 
715; Homestead, [itchcock 690; 
Braidentown, Hitchcock 965; 
Myers, I/itchcock 897, 904, 915. 
AuaBAMA: Fort Morgan, Tracy 
8401. ° 
Mississippt: Horn Island, Tracy in 
1903. 
Banamas: New Providence, Brit- 
ton & Brace 597, 599, Mills- 
paugh 2182, Northrup 248; 
Great Bahamas, Brace 3524, 
Britton & Millspaugh 2506, Fia, 200.—Distribution of P. caerulescens. 
2668; Andros, Brace 7015 (all in 
Field Mus. Herb.); New Providence, Eggers 4305 (Hackel Herb.), Eggers 
4312 (Krug & Urban Herb.). 
Cuba: Without locality, Wright 3463 in part. 
114. Panicum lucidum Ashe. 
Panicum lucidum Ashe, Journ. Elisha Mitchell Soc. 15:47. 1898. ‘Collected in 
June 1898 by the writer in deep, shady swamps bordering Lake Mattamuskeet, 
N.C.” There is no specimen in Ashe’s herbarium from the type locality, but there 
is a specimen of the vernal form in the National Herbarium collected by Ashe in 
1898 at Lake Mattamuskeet. This specimen is either the type or a duplicate type. 
The label is in Ashe’s handwriting. 
Panicum taxodiorum Ashe, Journ. Elisha Mitchell Soc. 16:91. 1900. “Type: 
K. K. McKenzie’s no. 460. Hummocks in cypress swamps. Lake Charles, La., 
September 1890.’’ The type, in Ashe’s herbarium, is a specimen passing from the 
vernal to the autumnal form and showing the early branching condition. 
DESCRIPTION. 
Vernal form at first erect and resembling that of P. dichotomum, but the weak culms 
soon becoming decumbent, sometimes rooting at the lower nodes; sheaths glabrous, 
usually ciliate on the margin; blades thin, bright green, shining, glabrous, at first 
erect, but soon widely spreading, 4 to 7 cm. long, 4 to 6 mm. 
wide; panicles resembling those of P. dichotomum but 
fewer-flowered; spikelets 2 to 2.1mm. long, 1 mm. wide, 
elliptic, glabrous (rarely obscurely pubescent); first glume 
about two-fifths the length of the spikelet, pointed; second 
glume and sterile lemma more strongly nerved than in 
P. dichotomum, both shorter than the fruit at maturity; 
fruit 1.7 mm. long, 0.9 mm. wide, slightly pointed. 
Autumnal form repeatedly branching, forming large 
clumps or mats of slender, weak, vine-like culms, the 
branches elongated and diverging at a wide angle, not 
fascicled, the blades 2 to 4.cm. long, waxy, flat and spreading; panicles much reduced, 
with few long-pediceled spikelets; basal blades linear-oblong, as much as 10 cm. long. 
Under a lens the oblong epidermal cells are visible between the nerves in the blades, 
especially on the lower surface, giving a minutely bullate surface characteristic of 
this species and of no other in this group. 
Fia. 201.—P. lucidum. From 
type specimen in National 
Herbarium. 
