24
Widely distributed in England, Wales, Scotland ; France,
Germany, Italy, Norway, Austria, Sweden, United States.
Plate X I I . , fig. 2. a, living cell; I, empty cell.
C lo s te x ium m o n ilife x um . E hr. In f. (1838), p. 90, t. 5, / . IG.
Frond stout, five or six times as long as broad. Innate, extremities
tapering; upper margin convex, lower concave, with a
central inflation, ends rounded ; large granules conspicuous, in
a single longitudinal series ; empty frond colourless, without
stri®, suture not evident.
Size. 0-32-0-40 mm. x 50 p ^R .) ; 0-48-0-8 mm. x 50-70
p (D.). Diam. 45-55 p (W.).
Ralfs. Desm. (1848), p. 166, t. 28, f. 3. Archer in Prit. Inf.
(1861), p. 748. Hassall Fr. Alg. 0 8 4 5 ). p. 370. Delponte
Desm. (1878), p. 94, t. 16, f. 21-23. Cleve Sver. Desm.
(1864), p. 494. Lundell Desm. Suec. (1871), p. 80. ■ Nordstedt
Norges Desm. (1873), p. 42. Nordstedt Desm. Arct.
(1875), p. 39. Petit Liste Desm. Paris (1877), p. 28. Grunow
Desm. Austr. (1858), p. 497. Wood P. Water Alg®
U.S. (1872), p. 113. Brebisson Liste Desm. (1856), p. 149.
Wolle Desm. U.S. (1884), p. 45, t. 7, f. 16. Notaris Desm.
Ital. (1867), p. 60, t. 6, f. 62. Rabh. Alg. Eur. (1868), p. 131.
Closterium lunula, Kutz. Syn. Desm. (1833), f. 80.
Closterium moniliferum forma Mulleriana, Jacobsen Desm.
Denm. (1874), p. 170.
Closterium moniliferum a. typicum, Klebs. Desm. Pruss.
(1879), p. 9.
H a b . In ponds, pools, &c.
Widely distributed in England, Wales, Scotland, Ireland;
France, Germany, Italy, Sweden, Austria, Norway, Russian
Lapland, United States.
Plate X I I .,fig . 3. a, living cell; i, empty cell.
C lo s te x ium J e n n e x i. Ralfs. Lesm. (1848), jp. 167, t. 2 8 ,/. 6.
Frond small, distance between the extremities six or seven
times the breadth, crescent-shaped, much curved, gradually
tapering, sometimes with an obscure central constriction; upper
margin very convex, lower very concave, without a central inflation,
ends obtuse, rounded, large granules in a single series,
empty frond colourless, without stri®.
Siz e . 87 X 14 ju (R.) ; 250-18 p (D .). Diam. 14 p .)
Brebisson Liste Desm. (1856), p. 302. Archer in Prit.
Inf. (1861), p. 748. Delponte Desm. (1878), p. 100, t. 17,
f. 52, 53. Lundell Desm. Suec. (1871), p. 81. Nordstedt
Norges Desm. (1873), p. 42. Wood P. Water Alg® U.S.
(1872) p. 115. Rabh. Alg. Eur. (1868), p. 134. Wille Nov.
Sem. (1879), p. 60. Wolle Desm. U.S. (1884), p. 44, t. 7,f. 5.
Closterium moniliferum, Ehr. Inf. (1838), t. 5, f. 16, No. 6,7.
Closterium Diance, c. Jenneri, Klebs. Desm. Pruss. (1879),
p. 12.
H ab. Sussex, Surrey, Hants, Cornwall; France, Sweden,
Norway, Italy, Nova Zembla, United States.
Plate X I I I . , fig- 4. a, living cell; i, empty cell.
C lo s tex ium L e ib lc in ii. Kutz. Syn. L ra t. (1833), p. 596.
Frond somewhat stout, distance between the extremities six
or eight times the breadth, crescent-shaped, much carved,
rapidfy attenuated, upper margin very convex, lower very concave,
often with a slight central inflation, ends sub-acute ; large
granules in a single series, fillets few or indistinct. Empty
frond somewhat straw-coloured, without stri®, suture evident,
zygospore orbicular.
S i z e . 0'85-0'15 mm. X 15-40 p (R.) ; 0-22-0-3 mm. x
46-57 p (D.). Diam 40-60 p (W.).
Brebisson Alg. Fal. (1835), p. 58, t. 8. Wolle Desm. U.S.
(1884), p. 46, t. 7, f. 13, 20. Archer in Prit. Inf. (1861), p.
748. Ralfs Desm. (1848), p. 167, t. 28,f. 4. Delponte Desm.
(1878), p. 98, t. 17, f. 1-6. Cleve Sver. Desm. (1864), p. 494.
Lundell Desm. Suec. (1871), p. 80. Petit Liste Desm. Paris
(1877), p. 28. Grunow Desm. Austr. (1858), p. 497. Wood
F. Water Alg® U.S. (1872), p. 114. Wittrook Scan. Desm.
(1869), p. 22. Brebisson Liste Desm. (1856), p. 150. Rabh.
Alg. Eur. (1868), p. 132. Wille Nov. Sem. (1879), p. 59.
Closterium lunula, Leibl. El. (1827), p. 259.
Closterium moniliferum forma Leibleiniana, Jacobsen Desm.,
Denm. (1874), p. 170.
Closterium moniliferum, b. Leibleinii, Klebs. Desm. Pruss.
(1879), p. 9.
H ab. In ponds.
Sussex, Surrey, Cheshire, Gloucester, Yorkshire, Lancashire,
Cornwall, Wales, Scotland ; France, Germany, Italy, Austria,
Sweden, Nova Zembla, United States.
var. ¡3. More slender, scarcely inflated on the lower margin.
Closterium Leibleinii, var. /3. Ealfs. Desm. p. 167.
Plate X I I I . , fig. 1. a i, living cells; c, empty cells; d, zygospore.
C lo s tex ium m o n o ts e n ium . Archer Micr. Journ. (1876), xvi.,
p . 415.
Small, comparatively stout, curvature slight, inflated in the
middle, gradually tapering though still thick towards the apices,