'f)
.1 !i
170 ZYQOPHYCE®:.
diam. 21-35 p (D.) ; length 25 p ; diam. 20 p (K.) ; diam.
25-30 g (Wo.).
Wille Norges Desm. p. 43. A rch e rin P rit. Inf. (1861), p.
742, t. 2, f. 20, 21, 24, 25, 31. Delponte Desm. (1878), t. xi.,
f. 56-62. Notaris Desm. Ital. (1867), t. 4, f. 46. Nordstedt
Desm. Arct. (1876), p. 34, 41. Cleve Sver. Desm. (1864),
p. 491. Lundell Desm. Sueo. (1871), p. 67. Nordstedt
Norges Desm. (1873), p. 33. P e tit L iste Desm. Paris (1877),
p. 31. Wittrock Scan. Desm. (1869), p. 18. W ittr. Sotv.
Alg., 51. Wood. P. Wate r Alg® U.S. (1872), p. 151.
Schaarschm. Magy. Desm. (1883), p. 274. Kirch. Alg.
Schles. (1878), p. 167. Brebisson Liste Desm. (1856), p.
139. Notaris Desm. Ital. (1867), p. 52, t. 4, f. 46. Rahh.
Alg. Eui’. (1868), p. 209, in p a rt. Wille Nov. Sem. (1879),
p. 53. Nordstedt Desm. Spitz. (1872), p. 39. Jacobsen
Desm. Denm. (1874), p. 206. Lemaire Desm. Vosg. (1883),
p. 24. Nordst. Desm. Bras. (1869), p. 228. Wolle Desm.
U.S. (1884), p. 126, t. 42, f. 9, 10, 24, 25.
H a b . In ponds.
Sussex, Surrey, Westmoreland, Cornwall; Prance, Germany,
Sweden, Norway, Denmark, Spitzbergen, Nova
Zembla, Russian Lapland, Ita ly , Hungary, Brazil, United
States.
Flate L V I I I ; fig. 4. a, living fro n d ; h h, empty fronds ; c d, end
views; e, zygospore.
S ta u z a s tz um g z a c ile . R a lfs Ann. Nat. Hist. (1845), xv., p. 155,
t. 11, / . 3.
Segments rough, elongated on each side into a slender
process which is terminated by minute spines ; end view t r i radiate.
S iz e . Length 72 u ; diam. 60 p (D.) ; length 42 p ; diam.
65-60 p (K.) ; diam. 40-50 p (Wo.).
Ralfs Desm. (1848), p. 136, t. 22, f. 12. Archer in P rit.
Inf. (1861), p. 742, t. 3, f. 28, 29. Kirchn. Alg. Schles.
(1878), p. 167. Delponte Desm. (1878), t. 12, f. 12-21.
Notaris Desm. Ita l. (1867), t. 5, f. 49. Cleve Sver. Desm.
(1864), p. 491. Lundell Desm. Suec. (1871), p. 68. Nordstedt
Norges Desm. (1873), p. 34. P e tit Liste Desm. Paris
(1877), p. 31. Wittrock Scan, Desm. (1869), p. 18. Wood
P. W a te r Alg® U.S. (1872), p. 152. Brebisson Liste
Desm. (1856), p. 139. Wille Norges Desm. (1880), p. 46.
Schaarsohm. Magy. Desm. (1883), p. 274. Notaris Desm.
Ita l. (1867), p. 54, t. 6,f. 49. Rahh. Alg. Eur. (1868), p.
211. Jacobsen Desm. Denm. (1874), p. 207. Lemaire Desm.
DESMIDIEiE. 171
Vosg. (1883), p. 24. Nordst. Desm. Bras. ( 1 / 9 ) , p. 229.
Wolle Desm. U.S. (1884), p. 133, t. 43, f. 16, 17.
Ooniocystis (Trigonocystis) gracilis, Hass. P r, Alg. (1845),
" Phycastrum gracile, Kutz. Spec. (1849), p. 181.
H a b . In ponds.
Lancashire, Westmoreland, Cornwall, Wales, Scotland;
Prance, Germany, Sweden, Norway, Denmark, Ita ly , Hungary,
Bi’azil, United States.
Plate L V I I I ; fig. 6. a, living fro n d ; I, empty frond; c d, end
views.
S ta u z a s tz um p a z a d o x um . Megen. Nova Acta. Leop. (1828), xiv.,
p. 43, / . 37, 38.
Prond rough; front view with elongated diverging processes,
which are minutely trifid a t th e apex ; end view
quadrangular, or sometimes triangular.
S iz e . Length 72 p ; diam. 50 p (D.) ; diam. 40-40 p (K.) ;
diam. 40-60 p (Wo.).
Ralfs Ann. Nat. Hist. (1845), xv., t. 10 f. 2. / / f s D /m .
(1848), p . 138, t. 23, f. 8. Archer in P n t. Inf. (1861), p.
742. Delponte Desm. (1878), 1 .11 f. 63-65. N /a rm D e sm .
Ital. (1867), t. 4, f. 46. Kirchn. Alg. Schles. (1878), p. 167.
Cleve Sver. Desm. (1864), p. 491. LundeH Desna. Sueo
('1871') p. 68. Nord.stedt Norges Desm. (1873), p- 34. P e tit
Liste D ^m . Paris (1877), p. 31 W ittio ck S e a / Desm.
(1869) p 18. Wood P. W a te r Alg® U.S. (1872), P - 1^2.
Wille Norges Desm. (1880), p. 46 S o b a a /chm M a g /
Desm (1883) p. 274. Brebisson Liste Desm. (1856), p. 139.
Rahh! Alg. Eu r. (1868), p. 210 in p a rt Desm.
Denm (1874), p. 207. Lemaire Desm. Vosg. (1883), p. 24..
W o7e Desm. U"S. (1884), p. 129, t. 42, f. 36, 37.
Phycastrum paradoxum, Kutz. Phy. Germ. (1845), p. 138,
t 85 f. 3
Ooniocystis (Staurastrum) paradoxum,Uusb. Pr. Alg. (1845),
" Micrasterias staurastrum, Kutz. Syn. Diat. (1833), p. 599.
H a b . In ponds.
Gloucester, Westmoreland, Sussex, C o rnw a / Wales,
Scotland; Prance, Germany, Sweden, Norway, Denmark,
Ita ly , Hungary, United States.
Plate L I X ; fig. 4. a, living frond ; I, empty fro n d ; c d, end views.
var. /3. lo n g lp e s . Nordst. Norges Lesm. (1873), p. 3 5 ,/. 17.
More slender and spreading.
S i z e . With rays, 77 p (N.).
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