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Contributions to the Flora of the Bahama Islands. III * 
By N. LL. Brrrron 
Marsilea Nashii Underwood, sp. nov. 
Plants forming compact dense mats in dry soil. Stems short, 
slender, smooth or with a few appressed slender hairs, forming 
nodes at intervals of 3-10 mm.; leaves rising in clusters from short 
lateral branches the ends of which are enveloped in small tufts of 
fulvous tomentum; petioles slender, filiform, 5-8 cm. long; leaf- 
blades of the usual quadrifoliate type, the divisions nar sail cutlass- 
shaped, the distal end curved abruptly upwards and ending in a 
blunt point, 1o-12 mm. long, 2 mm. wide, sparsely covered with 
white appressed hairs; sporocarps abundant, solitary on short 
(4. mm.) peduncles, compressed-oval, the dimensions averaging 
about 8-10 in each sporangium, oval, 690-800 » long by 540-620 2 
wide; microspores numerous, nearly globose, 53-64 u in diameter. 
Inagua, growing at Smith’s Thatch Pond, November, 1904 
(Nash & Taylor, 1411). Said to be very abundant in sandy loam 
alternately dry and covered with a few inches of water. 
Remarkable for the compact habit of growth and for the extremely 
narrow leaflets which recall those of AZ. tenuzfolva from Texas, 
one of our rarest species. This is the first species to appear in 
the Bahamas and the third from the West Indies. 
TILLANDSIA VALENZUELANA A. Rich, 
On trees in coppice, Marsh Harbor, Abaco (Brace, 1639). 
SISYRINCHIUM MIAMIENSE Bicknell. 
Near West End, Great Bahama (race, 7642). The specimens 
have more numerous flowers than the type from Florida and are 
referred to this species with some hesitation. The genus is hitherto 
unknown from the Bahamas. 
PoLYGONUM HYDROPIPEROIDES Michx. 
Water-holes, West End, Great Bahama (@race, 3523). Deter- 
mined by J. K. Small. 
sid Continued from Volume 4, page 127. 
