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2825
TETRASPORA lubrica.
.Lubricous Tetraspora.
C R YP TO G AM IA Algæ.
G e n . C h a r . Frond tubular or inflated, gelatinous.
Fructification minute granules loosely arranged
in fours.
S p e c . C h a r . Frond quite simple, at first convolute,
subgelatinous, waved, sinuated, more or less
cribrose.
Syn. Tetraspora lubrica. Ag. Syst. Alg. 188. Chev.
Ft. Par. v. 1. 7. t. 2. ƒ. 10. g. Dub. Bot. Gall.
959. Hook. Eng. FI. v. 5. pt. 1. 313.
Ulva lubrica. Roth. Cat. Bot. v. 1. 204. t. 5. f . 7.
& v. 3. 247. A g . Spec. Alg. v. 1. 415.
Conferva lubrica. Roth. 1. c. v.3. 168.
Rivularia lubrica. DeCand. FI. Fr. v. 6. 1.
Gastridium lubricum. Lyngb. Hyd. Dan. 71.
Tetrasporella lubrica. Gaill. Aperçu d’Hist. Hat.
(vide Ann. d. Sc. Nat.n. s. v. 1. p. 51.) Desm.
PI. Crypt, n. 655.
X N gently running fresh water in the spring and the beginning
of summer: at Hellesdon, Norfolk, Sir W. J .
Hooker; Hurst Pierpoint, and elsewhere in Sussex, Mr.
Borrer; Appin, Capt. Carmichael; King’s Cliff, Norths,
Rev. M. J . Berkeley.
Fronds 1—2 inches long, at first linear and convolute
but not truly tubular, at length more or less expanded,
oblong, waved and sinuated, and pierced here and there