—_ 5 — 
allong6es, correspondant sur la face inf6rieure & des Jignep, 
noires & contour net. Spores hyalines, droites, filiformes, 
sans cloison ni vacuoles, 24-30. 
Feuilles mortes de Carex. Thibet (Prov. de Monpin). 
Abbe David. 
35. Septoria Subiniae Pat. sp. nov. — P£ritheces 
peu nombreux, sur une tache hypophylle d&color&e. Spores 
filiformes, hyalines, obscur&ment septul&es, 48-60 m. m. m. 
Feuilles de Subinia. Thibet (Prov. de Moupin). Abbe 
David, 1870. 
F. Wolle, Fresh-Water Algae. X. 
(Bullet. Torrey botanic. Club. XTI. No. 12.) 
Wir. reproduciren aus dieser Arbeit die Diagnosen der 
neuen Arten und Varietäten. 
Ectocarpus rivularis, n. sp. — Tufts loose, 2—6 
inches long, dark olive-green; filaments stout and firm, much _ 
branched;, branches erect patent, mostly alternate, decom- . 
pound; stems and branches tapering. Diameter of lower 
part of stems often 250 u, branches 100 a, more or less; 
articulations of stems and of branches rarely more than half. 
as long as wide, often shorter; propagula rare, elliptic-oblong, _ 
acute, subsessile, constrieted at base; older parts of stems 
cortieulate, at first marked by longitudinal threads over the 
articulations, then by an irregular retieulation. Ä 
The Ectocarpi form a family of about fifteen species 
in our American marine waters, abundant along the Atlantic 
and Paeific coasts. The new species, E. rivularis, is 
claimed for fresh water. It has hitherto been found in only, k 
@.. 
three known localities in Florida. The first discovery, mad 
Tv 
by myself, was in a fresh water marsh pool about two miles . 
inland from Green Cove Spring, March, 1885. A month 
later, Rev. H. D. Kitchel found the same plant at Blue _ 
Springs on the St. John’s River, more than two hundred 
miles from the sea. In a collection made by Capt. J. Don- 
nell Smith in 1878, and sent to me, I discovered the same - 
plant and made an illustration in my sketch book, but did . 
not identify it then. The specimen came intermingled with _ 
other fresh-water algae. 
Among marine forms.the, plant is nearest Eetocarpu n. 
Durkeei, described by Harvey in. his Nereis _ ale r 
Americana. More modern authors consider this form a mere 
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