HITCHCOCK—GRASSES OF CUBA. 219 
The Grisebach specimen of Wright 3461 also belongs to this species, though it is 
listed by him under P. dichotomum variety nodiflorum. Another specimen of this 
was included by Grisebach under P. neuranthum; it is labeled ‘‘ a forma ascendens 
ramosa.”? Wright’s 3461 in the Gray Herbarium is part P. chrysopsidifolium and 
part P. lancearium. The two labels are, ‘‘Sandy pinales, Asiento Viejo de San 
Julian, Dec. 1,’? and ‘* Pinal. Mayari, July 24.” 
This species is distinguished from P. neuranthum by the pubescent culms, bearded 
nodes, spreading vernal panicles, and short, flat autumnal blades on zigzag stems. 
The spikelets are 2 mm. long. It occurs in Florida and in Porto Rico (Heller 982). 
7. Panicum caerulescens Hack. in herb. 
Vernal form cespitose, of a somewhat glaucous bluish green color; culms erect or as- 
cending, 40 to 75 em. high, glabrous; sheaths usually less than half as long as the inter- 
nodes, glabrous or the basal ones sparingly pubescent; blades ascending or spread- 
ing, commonly purplish beneath, glabrous or rarely a few hairs around the base, 5 to 
8 cm. long, 4 to 7 mm. wide, the margins nearly parallel for two-thirds their length; 
panicles usually short-exserted, 3 to 7mm. long, one-half as wide or less, the branches 
narrowly ascending; spikelets 1.5 to 1.6 mm. long, 0.9 mm. wide, obovoid, blunt, 
very turgid, glabrous, first glume about one-third the length of the spikelet; second 
glume and sterile lemma subequal, the glume scarcely as long as the fruit at maturity; 
fruit 1.4 mm. long, 0.8 mm, wide, ellipsoid. 
Autumnal form erect or leaning, sometimes decumbent at base, producing short, 
densely fascicled branches at the middle and upper nodes, these tuits scarcely as long 
as the primary internodes, the reduced blades ascending, more or less involute; the 
reduced panicles with only a lew long-pediceled spikelets. 
Closely related to P. roanokense, a species of the southern Atlantic coastal plain of 
the United States, from which it is distinguished by the narrow panicles and smaller 
spikelets and by the tufted branches of the autumnal form. 
The type is Hitchcock 706, ‘In glade among Spartina, etc., stretching up through 
the tall grass, Miami, Florida, April 3, 1906; U.S. National Herbarium no. 558380. 
The name refers to the glaucous blue color. 
In marshes and swampy woods, southern Alabama and Florida, Cuba, and the 
Bahamas. 
Wright 3463 in part; Santa Clara, Britton & Wilson 316 in Herb. N. Y. Bot. Gard. 
Wright’s 3463 in the National Herbarium and inthe Krug and Urban Herbarium is 
this species. For other species distributed as 3463, see P. leucothrix, P. wrightianum, 
and P. tenue. 
Bahamas, New Providence, ‘‘in fruticetis procumbens,’ Lggers 4305, 
8. Panicum compactum Sw. Adnot. Bot. 14. 1829. 
Eastern Cuba, 1856-57, Wright 749; Isle of Pines, Curtiss 291, 520, Palmer & 
Riley 904. 
This species is distinguished by its broad, usually puberulent blades and compact 
panicle. 
Panicum condensum Nash in Small, Fl. Southeast. U.S. 93. 1903. 
Low savannas, Hanabana, May 19, Wright 3862 in part. 
In the Grisebach Herbarium there are two specimens of this species. One of them 
has two labels, ‘‘Low wet woods, Hanabana, May 27,’’ no. 184 of 1865, and ‘‘Wet— 
among tall Cyperaceae, in small bunches, Hanabana, May 25.” The plant is 3 feet 
tall, stout, with a compressed base, and narrow compact panicle. The other specimen, 
which is similar, is labeled, ‘‘Palm savannas, Hanabana, May 18,’’ 1865, no. 197. 
This number of Wright’s in the Sauvalle Herbarium and in the National Herbarium 
is mixed with P. larum. There is a fragment of what appears to be the same, on the 
sheet of 3863 in the Sauvalle Herbarium. /. condensum is common in the southern 
United States and is found also in the Bahamas (Curtiss 174). Wright’s 3862 in the 
