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Norges Desm. (1880), p. 43. Cleve Sver. Desm. (1864),
490. Luudell Desm. Suec. (1871), p. 65. Nordstedt Norges
Desm. (1873), p. 31. Brebisson Liste Desm. (1856), p. 188.
Eabh. Alg. Eur. (1868), p. 214. Jacobsen Desm. Denm.
(1874), p. 209. Scbaarsclim. Magy. Desm. (1883), p. 273.
Wolle Desm. U.S. (1884), p. 144, t. 51, f. 24-26 var.
Stephanoxanthium moniiculosum, Kutz. Spec. Alg. (1849), 184.
Phycastrum moniiculosum, Kutz. Pliy. Germ. (1845), p. 138.
Staurastrum monticulosum, Ealfs Desm. (1848), p. 180, t. 34,
f. 9.
Hab. In pools.
Cornwall, Lake District; France, Germany, Sweden, Norway,
Denmark, Hungary.
Plate L., fig. 10. a, living frond ; b, empty frond ■, c d e, end
views.
S ta u r a s tr u m s u l) - c ru c ia tum . Cooke ^ Wills, MS S .
Rather small, about as broad as long, or a little broader, constriction
rectangular, expanding, segments obversely triangular,
angles pi'oluoed into a. short furcate spine, either plane or a
little directed upwards, dorsal margin slightly convex or nearly
straight, granulate, lateral margins also very slightly convex
and granulate, surface granulate, granules at the angles in
transverse lines, end view triradiate, angles ending in a short
spine, sides very slightly concave.
Siz e . Length 30 p ; diam,, with spines, 35 p.
H a b . In mountain pools.
Capel Curig. (N. Wales).
Plate L I ., fig. 3. a, liviog frond ; b, empty frond ; c d, end views.
S ta u z a s tz um R e in s c h i i . Poy Journ. Eoy. Micr. Soc., p. 133.
Semi-cells in front view broadly ovate-cordate, apex broadly
rounded, lateral extremities truncate aurioulate, armed with two
short spines, incision acute-angled, end view triangular, sides
somewhat convex, angles rounded, armed with a single spine,
cell membrane furnished witb bicuspidate and entire spines, disposed
irregularly.
Siz e . Length and diam. 20 p (Ee.).
Staurastrum sp., Reinsch. Contrib. (1874), p. 86, t. xvii, f. 5.
H ab. In mountain pools.
Lake District (England) ; Germany.
149
Stauzastzum tu b e z cu la tum . Bennett Journ. Eoy. Micr. Soc.,
(1886), p. 12, fig. 24.
Frond moderately large, semi-cells nearly hexagonal in shape,
terminal and upper lateral edges nearly straight or slightly con-
vex, lower lateral edges concave, the whole margin, except the
lower lateral edges, rough with pearly granules, which are larger
at the corners. Surface of frond tuberculate.
Siz e . Length 70 p. ; diam. 55 p (B.).
H ab. In bog pools.
Lake District (England),
Plate LX „ fig. 6. a, living frond ; b, empty frond after Bennett.
IV Segments with numerous simple acute spines, m front
’ view no one in particular terminating the o p p o s /
lateral extremities, end view angles entire, rounded, the
spines scattered.
S ta u z a s tz um h iz s u tum . Breb. in E alfs Lesm. (1848), p. 127,
t. 22, f . 3.
Segments semi-orbicular, rough with numerous h a i/lik e
spines ; end view with three rounded angles and straight or
slightly convex sides. Zygospore orbicular, beset with short,
branched spines.
Siz e . Diam. 40-62 p. (K .) ; diam. 40-60 p (Wo.) ; length
46 p; diam. 36 p (D.).
Wille Norges Desm. (1880), p. 48. A r o / r in Pritch
Inf. (1861), p. 739. Delponte Desm. /8 7 8 ) t. 11, t.
31-32. Notaris Desm. Ital. (1867), t. 4, f- 41. C eve
Sver. Desm. (1864), p. 490. Lundell Desm. Suec
(1871) p. 63. Nordstedt Norges Desm. (1873), p. 30. Wood
I w i ’ter Algai U.S. (1872), p. 152 A T '
(1856) p 141. Notaris Desm. Ital. (1867), p. 50, t. 4, f. 41.
L b h Alg. Eur. (1868), p. 211.
(1874), p. 205. Schaarschm. Magy. Desm. {i68d) , p. 2ió.
Lemaik^Desm. Vosg. (1883), p.. 2 /
(1884), p. 141, t. 45, f. 19-21. Kirchn. Alg. Sohles. (1878),
^ B in a te lla hispida, Breb. Alg. Fal. (1 8 3 5 /p . 58, t. 8.
Euastrum {Xanthidium) hirsutum, Kutz. Phy. Germ. (1845),
x in th id iu m hirsutum, Ehr. Abh. Berl. Ak. (1833), p. 318 ;
E h r. Inf. (1838), p. 147, t. W, f. 22. n s i b i
Goniocystis {Trigonocystis) muricata, Hass. l i . Alg. (1840J,
p. 351.
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