63 
dried specimens broken off in the same way. In every other re- 
spect the plant is Z. marina. 
This species is common in sheltered bays and marsh ditches 
between high and low water mark along the Atlantic coast from 
Greenland to Florida, and on the Pacific coast from Alaska to 
California. Europe and Asia. (Plate LXIX.) 
2. ZOSTERA MINOR (Cavol.) Nolte, in Reich. Ic. vii. 2 (1845). 
Phucagrostis minor, Cavol. Phuc. Th. Anth. xiv. (1792). 
Z. nana, Roth, Enum. Pl. Germ. p. 8 (1827). 
A specimen which probably belongs to this species, collected 
at Key West, Florida, by Blodgett is in the Torrey Herb. Leaves 
3-6 inches long, scarcely 34 of a line wide, I-nerved. It lacks fruit, 
however, to make its rank sure. The seeds of this species in 
English specimens are about 3% of a line long, and smooth or very 
faintly striate, only 4 or 3 maturing in the spathe. (Plate LXX.) 
3. ZOSTERA LATIFOLIA, Morong. 
Z. marina, L. var. (?) latifolia, Morong, Bull. Torr. Club, xiii, 160 
(1886). 
Z. Pacifica, S. Watson, Proc. Am. Ac. 26, 131 (1891). 
Rootstocks very thick, sending up a stout stem which is some- 
times 8 or 10 feet in length. Leaves 2-4 feet long, 3-6 lines 
wide, the broadest having from то to 13 nerves and у or 8 stria 
between each pair of nerves. Spadices 2-3 inches in length. 
Fruit 114-2 lines long by about 1 line in diameter, cylindrical, 
with a straight beak as long as itself and attached to the spadix 
by a short stipe, distinctly 20-25 costate. Pericarp membranaceous, 
splitting regularly along the face, the ribs of the seed marked upon 
the pericarp in the dried specimens. 
Puget Sound (Nevins); Santa Barbara, Cal. (Mrs. R. F. Bing- 
ham); Bolinas Bay (Prof. E. L. Greene). Monterey (Dr. C. L. 
Anderson) (Plate LXXI.) 
9. PHYLLOSPADIX, Hook. Fl. Bor. Am. ii. 171 (between 1834 
and 1840). 
Submerged marine plants with thickened rootstocks, sending 
up slender stems which bear the inflorescence at the summit or 
in clusters along the upper part. Leaves linear, grass-like, sub- 
