Rti
ill
S t a u r a s tr um D ick ia e i. Balfs. Desm. (1848), p. 123, t. 21, / . 3.
Segments in front view subelliptio, tnrgid, smooth ; spines
short, curved, acute, converging with those of the opposite
segment; end view with three angles ; angles inflated, rounded,
terminated by a spine ; sides concave at the centre.
Siz e . Diam. 36-44 p (Wo.).
Archer in Prit, Inf. (1861), p. 737. Cleve Sver. Desm.
(1864), p. 489. Lundell Desm. Sueo. (1871), p. 66. Nordstedt
Norges Desm. (1873), p. 27. Petit Liste Desm. Paris (1877),
p. 81. Brebisson Liste Desm. (1856), p. 142. Wille Nov,
Sem. (1879), p. 52. Wille Norges Desm. (1880), p. 41.
Schaarschm. Magy. Desm. (1883), p. 272. Lemaire Desm.
Vosg. (1883), p. 22. Wolle Desm. U.S. (1884), p. 122, t.
40, f. 5, 6 ; t. 51, f. 20, 21.
Staurastrum dejectum ft Dickiei, Jacobsen Desm. Denm.
(1874), p. 204.
Staurastrum brevispina var. b. Dickiei, Eabh. Alg. Eur.
(1868), p. 202.
H ab. In pools.
Lake District, Cornwall, Wales, Scotland; Prance, Germany,
Sweden, Norway, Denmark, Hungary, Nova Zembla,
United States.
Plate X L IX ., fig. 3. a, living frond ; I, empty frond; c d, end views.
S ta u x a s tz um b z e v is p in a . Breh. in Meneg. Syn. Desm. (1840), p.
229.
Segments in front view elliptic, or somewhat reniform, very
turgid, smooth; mucrones minute, inconspicuous ; end view
with three angles ; angles inflated, broadly rounded, terminated
by an inconspicuous mucro ; sides concave at the centre.
Siz e . Diam. 40 p (K.) ; diam. 45-48 p (Wo.).
Ealfs. Desm, (1848), p. 124, t. 34, f. 7. Archer in Prit. Inf.
(1861), p. 737. Cleve Sver. Desm. (1864), p. 489. Lundell
Desm. Suec. (1871), p. 59. Brebisson Liste Desm. (1856),
p. 143. Rabh. Alg. Eur. (1868), p. 202 (sine var. b). Wille
Nov. Sem. (1879), p. 52. Kirchn. Alg, Schles. (1878), p. 168.
Schaarschm. Magy. Desm. (1883), p. 272. Lemaire Desm.
Vosg. (1883), p. 22. Wolle Desm. U.S. (1884), p. 121, t. 40,
f. 1, 2 ; t. 53, f. 2, 3.
Staurastrum muticum var. brevispina, Jacobsen Desm. Denm.
(1874), p. 202.
H ab. In pools.
Sussex, Cornwall; Prance, Germany, Sweden, Nova Zembla,
Denmark, Hungary, United States.
S ta u z a s tz um c u s p id a tum . Breb. i
p. 226.
Meneg. Syn. Lesm. (1840),
Segments smooth, fusiform, connected by a long narrow band ;
awns parallel or converging, but straight ; end view_ with in
flated awned lobes. Zygospore orbicular, spinous ; spines ultimately
attenuated and acute.
Size. Length 25-30 p \ diam. 25 p. (K.) ; length 25 p ;
diam. 21 p (D.) ; length 30 p ; diam. 25 p (Wo.).
Ralfs. Desm. (1848), p. 124, t. 21, f. 1 ; t. 3 ^ f. 10.
Archer in Prit. Inf. (1861), p. 7 3 7 , t l, f. 31-34. D e /o n te
Desm. (1878), t. 10, f. 16-33 ; Cleve Sver. Desm. ( I S / ) . P-
489 Wittr. Sotv. Alg. 54. Lundell Desm. Suec. (1871), p.
60. ■ Kirchn. Alg. Schles. (1878), p. 169. N o r d / / . Norges
Desm. (1873), p. 28. Petit Liste Desm. Pan s (1877), p 31.
Nordst. & Wittr. Desm. Ital. (1876), p / 2 . B /r s g o n L i/ e
Desm. (1856), p. 142. Rabh, Alg. Eur. (1868), p. 203.
Wolle Desm. U.S. (1884), p. 123, t. 40, f. 2 3 - / . M Bk N /g e s
Desm. (1880), p. 41. Sohaarschm. Magy. Desm. (188.^, P-
272. Lemaire Desm. Vosg. (1883), p. 23. Nordst. Desm.
Bras. (1869), p. 225.
Phycastrum cuspidatum, Kutz. / y . Germ. (1845), p. 138.
Phycastrum spinulosum, Nag. Einz. Alg. (1849), t. 8
Binatella cuspidatum, Breb. Alg. Fal. (1835), P- 5’^;
Staurastrum cuspidatum, var. Ralfsiana, Jacobsen Desm.
Denm. (1874), p. 203.
H ab. In ponds.
Lancashire, Hants, Cornwall, Essex, W a l e s ; France, Germany,
Sweden, Norway, Denmark, Hungary, Italy, Brazil,
United States.
Blate X L IX ., fig 5. a, iiving fronds j b, empty fronds ; e d, end views ;
e, zygospore.
S tau za stzum a z is tife zum . Balfs. Lesm. (1848), p. 123, i. 2 1 ,/. 2.
Segments smooth, the lohes in front view prolonged _ i/o
mammillate awned projections, which are somewhat constricted
at the base ; end view with three or four awned lobes ; sides
deeply concave at the centre.
Size. Diam. with spines 36 p (K.) ; diam. 15-20 p without
spines (Wo.).
Archer in Prit. Inf. (1861), p. 737. Lnndell D /m Suec
(1871), p. 61. Nordstedt Norges Desm. (1873), p. 28. / t d
Liste Desm. Paris (1877), p. 81. Wood F. W a te i/lgæ U /
(1872), p. 149. Brebisson Liste Desm. (18o6), p. 1 / . Rabh.
Alg. Enr. (1868), p. 204. Nordst. Desm. B r / . (1869)> P-
226. Wolle Desm. U.S. (1884), p. 122, t. 40, f. 15, 16.
Kirchn. Alg. Schles. (1878), p. 169.
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