Desmids from Thailand and Malaysia
Desmids from Thailand and Malaysia
Desmids from Thailand and Malaysia
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80 M. HIRANO<br />
Cells large; semicells broadly elliptic, lateral angles broadly rounded, with a spine con-<br />
ically disposed; semicells in a vertical view broadly rounded with a short spine, side view<br />
slightly concave. L. 127.6 ptm, B. 105.6 ptm, <strong>and</strong> I. 39.6 ptm. St. 47.<br />
69. St. protectum W. & G.S.West var. rangoonense (Skuja) Scott & Prescott<br />
Scott & Prescott 1961, 103, Pl.44, f.1,2.<br />
Pl.47, f.5; Pl.49, f.5.<br />
L. 31 "m, B. 38.3 ptm, <strong>and</strong> I. 13 um. St. 32. Indonesia (Borneo). New to <strong>Thail<strong>and</strong></strong>.<br />
70. St. pseudosebaldi Wolle var. simplius West Pl.41, f.3.<br />
Hirano 1959, Contr. Biol. Lab. Kyoto Univ. 9, 365, Pl.46, f.9; Prescott et al. 1982,<br />
2:4, 290, Pl.442, f.2<br />
L. 37.4 xim, Bcpr. 44 "m, <strong>and</strong> I. 8.5 ptm. Cells of a little less than medium size,<br />
approximately 1.2 times broader than the length; semicells cup-shaped, apex slightly<br />
convex, process short <strong>and</strong> slightly divergent; semicelis in a vertical view triangular, mar-<br />
gin slightly concave, intramarginal verrucae form reduced to simple short spines. Sts.<br />
13,23. Japan, Europe, U.S.A. New to <strong>Thail<strong>and</strong></strong>.<br />
71. St. pseudotetracerum (Nordst.) W.&G.S.West Pl.44, f.6.<br />
West 1895, Trans. Linn. Soc. Bot. II, 5:5, 79, Pl.8, f.39; West & Carter 1923, 5, 122,<br />
Pl.149, f.11; Hirano 1959, Contr.Biol. Lab. Kyoto Univ. 9, 347, Pl.43, f.17.<br />
L. 18.5 pm, B. 22 ptm, <strong>and</strong> I. 5.7 pm. Cells small, slightly broader than the length,<br />
sinus open <strong>and</strong> rectangular; semicells cuneate, apex slightly convex, process short, slight-<br />
ly curved upward, <strong>and</strong> denticulated; vertical view of a semicell triangular, sides concave.<br />
St. 22. Ceylon, Indonesia (Borneo), Europe, U.S.A., Africa. New to <strong>Thail<strong>and</strong></strong>.<br />
72. St. pseudozonatum Borge var. sumatranum Krieger Pl.48, f.12,16.<br />
Krieger 1932, Arch. Hydrobiol. Suppl.11, 205, Pl.16, f.4.<br />
Lcpr. 35-48 pm, Bcpr. 35 ptm, <strong>and</strong> I. 8.8-13 ptm. Sts. 4,19,39. Indonesia (Sumatra).<br />
New to <strong>Thail<strong>and</strong></strong>.<br />
73. St. pterosporum Lund. Pl.40, f.17.<br />
Lundell 1871, Nov. Act. Reg. Soc. Upsal. III:8, 60, Pl.3, f.29; West & Carter 1923, 5,<br />
14, Pl.132, f.1-4; Prescott et al. 1982, 2:4, 292, Pl.353, f.12.<br />
L. 22 ptm, B. 23 ptm, <strong>and</strong> I. 9 ptm. Cells small, as long as the breadth, moderateiy<br />
constricted, sinus widely open; semicells cuneate, lateral margin straight or slightly con-<br />
vex, apical angles with a short spine; semicells in a vertical view triangular, sides straight<br />
or slightly concave, angles with a spine. St. 47. Europe, S.America, Australia, New<br />
Zeal<strong>and</strong>. New to <strong>Thail<strong>and</strong></strong>.<br />
74. St. punctulatum Breb. var. punctulatum<br />
West 1911, 4, 179, Pl.127, f.8-11, 13,14; Prescott et al. 1982, 2:4, 292, Pl.339, f.16.<br />
L 22-31 ptm, B. 26.4-35 ptm, <strong>and</strong> I. 6.5-6 ptm. Sts. 10,12,13,23,26,32,37. Indone-<br />
sia (Sumatra). Cosmopolitan.<br />
74a. var. ellipticum Lewin Pl.40, f.18.
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