cells with one large central inflation, and a smaller one on
each side, two on end lobe.
Size. 90 x 90 m (R.) ; 100 x 100 m (D-) ; 75 M (W.).
Ehr. Infus., t. 12, f. 5. Ralfs. Desm (1848), p. 79, t 11,
f. 2. Archer in P rit. Inf. ( 1 8 6 1 ), p^ 728. Hassall
(1845), p. 379. Delponte Desm^ (1876) p^94, ^ H 5 .
Cleve Sver. Desm. (1864), p 486^ Wolle Desin II.S (1884),
n 100 t 26 f. 1-5. Lnndell Desm. Snec. (1871), p. lb-
k o rd s te d t Norges Desm. (1873) p. “ esm.
Paris (1877), p 30. Wood E. W a te r Alg® U.S.^ (1872), p.
136. Wittrock Scan. Desm. (1869), p^^8 B ^ b is so n Liste
Desm (1856), p. 123. Notaris Desm. Ital. (1867), p. 33, t.
gT T o .^ E a ih ^A lg . E n n (1868), p. 179^
Denm. (1874), p. 189. Kirchner Alg. Schles. (1878), p. ibU.
Cosmarium verrucosum, Meneg. Syn. Desm. (1844), p. 222.
Euastrum papulosum, Kutz.
H ab. In pools, amongst Sphagnum.
Hants, Kent, Snssex, Surrey, Cornwall, Westmoreland,
Middlesex, Wales, Scotland; Germany, Prance, Sweden,
Denmark, Norway, Ita ly , United States.
Plate XXXI., Jig. 1. a, living frond ; b, empty frond ; c, end view ;
d, side view.
E u a s tz um o tilo n g um , Grev. Ealfs. Lesm. (1848), p . 80, t. 12.
Frond ra th e r more th a n twice as long as broad, smooth,
oblong; segments five-lobed; lobes nearly equal cnneate;
S e r a l lobe^s or the basal only, w ith a broad, shallow, ma rginal
concavity, all th e ir angles rounded; terminal notch
iT r a r E m p ty frond punctate, with three large inflations
a t base of each semi-cell, two others above and two smaller
in terminal lobe. Zygospore orbicular, tuberonlose.
Size. Length 160 g; diam. 86 g (R.) ; length 165 g;
diam. 93 g (D ) ; diam. 68-75 g (W.) ; zygospore 140 g (R.).
Ai’cher in P rit. Inf. (1861), p. 728, t 13, L 11. Hassall
F r AK (1845) p. 380. Ralfs. Brit. Algfe No 28. Del-
i r . Alg. ( iqo t vi, f. 26-30. Cleve Sver.
Deim T S P 485 W o lk Desm. U.S-. (1884), p. 98, t.
S T s ! ; ¿ L e T b e ™ . S » o . (18711 p. 17^
TT i'187'tI n 41. P e tit L is te Desm. P a n s (1877),
p T a ’ WoodF. Wate r Alg® U .S . (1872), p. 136.
Scan. Desm. (1869), p. 6. Brebisson k / ^ / o ' T l l R^bh
123. Notaris Desm. Ital. 11867), 34, L 2, L 11. Rabh.
Alg. Eur. (1868), p. 181. Jacobsen Desm_ Denm. (1874), p.
190. Kirchner Alg. Sohles. (1878), p. 167.
Eehinella oblonga, Grev. in Hook. Br. FL, v., pt. 2 (1830),
^'^kastrumpecten, Ehr. Abh. Berl. Ak. (1831), p. 82. In f ,
t. 12, f . 4. Focke Phys. Stnd. (1 8 4 7 / t 1, f . 10 t. 2, f . 8, 9.
Cosmarium sinuosum, Oox'da Aim. Carls, (looo), p. t-
2 f 21
’ Micrasterias sinuata, Breh. Alg. Fal. (1835), p. 55, t. 7.
Eutomia oblonga, Harvey Br. Alg. (1841), p. 188.
Cosmarium oblongum, Breh. in Meneg. Syn. Desm. (IÖ4U),
p. 221.
H ab. In pools.
Generally distributed in England, Wales_, Sootlami,
Ireland; France, Germany, Ita ly , Sweden, Russian Lapland,
Denmark, United States.
var. ß. Smaller, narrower, middle lobes rounded without
any marginal concavity.
Plate X X X I., fig. 2. », living frond ; b, empty frond ; c, side view ;
d e, transverse views; / , zygospore.
E u a s tzum c zassum . Kutz. Phyc. Germ. (1845), p. 135.
Frond about twice as long as broad, snh-qnadrilateral,
smooth, segments three-lobed, basal lobes very broad, with a
very broad, shallow marginal sinus, in which there is sometimes
a slight intermediate rounded projection; end lobe
cnneate, rounded, terminal notch lin e a r; empty frond
punctate; semi-cells with three inflations below and two
sT e. Length 127-190 g ; diam. 95 g (R.) ; diam. 68-82 g
(W.)
Ralfs. Desm. (1848), p. 81, t. 11, f. 3. Archer in PrA.
In f (1861) p. 728. Cleve Sver. Desm. (1864), p- 485.
Nordstedt Norges Desm. (1873), p. 8 BreKsson Liste
D e sm . (1856), p. 122. N°ta-is Desm. ItaL (1867) p. 34, t.
2 f 12. Wolle Desm. U.S. (1884), p. 97, t. 25, B I 3.
Lnndell Desm. Snec. (1871), p / 7 (?)^
Paris M877), p. 30. Wood F. Wate r Alg® U.S. (1 8 '^ ), p.
137. Rahh. Alg. Enr. (1868), p 18L Jacobsen Desm.
Denm. (1874), p. 190. Kirchner Alg. Schles. (J®78), p. 157.
Cosmarium crassum, Breb. in Meneg. Syn. Desm. (1840),
^ Euastrum pelta, Hassall Fr. Alg. (1845), p. 380. Ralfs.
Ann. Nat. Hist. (1844), xiv., t. 7, f. 1.
H ab. In pools and ponds.
Generally distributed in England, Wales, Scotland;
I
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