.1
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180
ttt Segments with two processes from each angle, placed side
hy side.
S t a u r a s tr um læ v e . Ealfs Desm. (1848), jp. 131, t. 2 3 ,/. 10.
Frond smooth ; segments with sliort processes at the apex,
and directed outwards ; end A'iew with three or four bipartite
angles.
Siz e . Length 22 p ; diam. 13 p (K.).
Wittr. Sottv. Alg. (1872), p. 54. Arclier in P n t. H f.
(1861), p. 744. Cleve Sver. Desm. (1864), p. 490. LundeU
Dosm. Sueo. (1871), p. 63. Nordstedt Norges Desm (1873),
p. 28. Brebisson Liste Desm. (1856), p. 137. llabh. Alg.
Eur. (1868), p. 206. Jacobsen Desm. Denm. (1874), p. 208.
Nordst. Desm. Bras. (1869), p. 226. Kirchn. Alg. Schles.
(1878), p. 167.
H ab. In pools.
AVales, Lake District; France, Germany, Sweden, Norway,
Denmark, Brazil, United States.
Plate L X I I I . , flg. 2. a, living frond.
var. C le v e i. Wittrock Sean. Lesm. (1869), p . 18, flg, 9.
Segments 6-rayed, rays long, spreading, furcate.
Siz e . Length with rays 53 p ; diam. 50 p (W.).
Archer in Micr. Journ. (1871), pp. 92. Lundell Desm.
Suec. (1871), p. 62. Nordstedt Norges Desm. (1873), p. 28.
H ab. In pools.
Sweden, Norway.
Plate L X I I I . , fig. 3. a, living frond.
XI. Segments in front view with each opposite lateral ex-
' tremity terminating in a colourless process, either short,
rounded and dentate, or elongate and entire at the end,
end view circular, margined with from 5 to 7 processes,
or compressed, and with but two processes.
+ End view circular.
S ta u z a s tz um s e x c o s ta tum . Ereh.
228.
Syn, Desm. (1840),
Segments in front view witli a toothed angle at each side;
end view circular with five or six broad, short, toothed lobes.
Siz e . Length 86-46 p ; diam. 26-41 p (K.).
Ralfs Desm. (1848), p. 129, t. 23, f. 5. Archer in Prit.
Inf. (1861), p. 744. Nordstedt Desm. Arct. (1875), p. 36.
Cleve Sver. Desm, (1864), p. 491. Lundell Desm. Suec.
(1871), p. 74. Nordstedt Norges Desm. (1873), p. 37. Petit
Liste Desm. Paris (1877), p. 31. Brebisson Liste Desm.
(1856), p. 138. Rabh. Alg. Eur. (1868), p. 216. Wille
Norges Desm. (1880), p. 47. Kirchn. Alg. Schles. (1878), p.
165.
^goniocystis {Pentasterias) Jenneri, Hass. Fr. Alg. (1845), p.
Stephanoxanthium sexcostatum, Kutz. Spec, (1849), p. 184.
Staurastrum Jenneri, Ralfs Ann. Nat. Hist. (1845), xv., p.
158, t. 11, f. 8. V ri , I
H a b . In ponds.
Sussex, Gloucestershire, Wales, Cornwall; France, Germany,
Sweden, Norway, Spitzbergen.
Plate L X IV ., fig. 1. a c, living fronds ; h d, empty fronds ; e f, end
views.
S ta u z a s tz um m a z g a z ita c e um . Meneg. Syn. Lesm. (1840), p. 227.
Segments rough; tapering at the constriction, and having
short, lateral processes ; end view with five or more short,
narrow, obtuse rays.
Siz e . Diam. 33-44 p (K.) ; diam. 30-35 p (Wo.).
Ralfs Ann. Nat. Hist. (1845), xv., p. 157, t. 11, f. 7. Ralfs
Desm. (1848), p. 184, t. 21, f. 9. Archerin Prit. Inf. (1861),
p. 744, t. 3, f. 34, 85. Nordstedt Desm. Arot. (1875), p. 33.
Wille Norges Desm. (1880), p. 41. Cleve Sver. Desm.
(1864), p. 491. Nordst. Desm. Bras. (1869), p. 226. Nordstedt
Norges Desm. (1878), p. 28. Notaris Desm. Ital. (1867), p.
58, t. 5, f. 48. Wood F. Water Alg® U.S. (1872), p. 150.
Kiroh. Alg. Schles. (1878), p. 166. Brebisson Liste Desm.
(1856), p. 140. Eabh. Alg. Eur. (1868), p. 206. Jacobsen
Desm. Denm. (1874), p. 206. Lemaire Desm. Vosg. (1883)
p. 23. Wolle Desm. U.S. (1884), p. 125, t. 41, f. 81-35.
Pentasterias margaritacea, Ehr. Inf. (1838), p. 144, t. 10, f.
15.
Phycastrum margaritaceum, Kutz. Phy. Germ. (1845), p.
138.G
oniocystis {Pentasterias) margaritacea, Hass. Fr. Alg. (1845),
p. 356.
Phycastrum rotundatum, Kutz. Spec. (1849), p. 182.
H a b . In ponds.
Sussex, Cornwall, Somersetshire, Westmoreland, Wales,
Scotland ; France, Germany, Sweden, Norway, Denmark, Spitzbergen,
Italy, Brazil, United States, Java.
Plate L X IV ., flg. 2. a, living frond; 5, empty frond; g h i, end
views ; c, living frond of variety ; d, empty frond; e f , end views.
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