Desmids from Thailand and Malaysia
Desmids from Thailand and Malaysia
Desmids from Thailand and Malaysia
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Desmicts <strong>from</strong> <strong>Thail<strong>and</strong></strong> <strong>and</strong> <strong>Malaysia</strong> 29<br />
35. C. decoratumW.&G.S.West Pl.20,f.8.<br />
Krieger 1932, 175, Pl.12, f.15; Scott & Prescott 1961, 57, Pl.25, f.1.<br />
L. 62 ptm, B. 44 Itm, <strong>and</strong> I. 17.6 ptm. Sts. 31,53. Indonesia (Sumatra). New to Thai-<br />
l<strong>and</strong>.<br />
36. C. depressum (Nag.) Lund. var. depressum Pl.16, f.4.<br />
West 1905, 2, 176, Pl.62, f.2-5; Krieger 1932, 175, Pl.9, f.17; Hirano 1967, Nat. Life<br />
SE Asia 5, 46.<br />
L 28-31 ptm, B. 27-32 xtm, <strong>and</strong> I. 7-8 "m. Sts. 1,43,51,53. Cosmopolitan.<br />
36a. var. achondrum (Boldt) W.&G.S.West Pl.17, f.24.<br />
West 1905, 2, 177, Pl.62, f.6-9; Krieger & Gerloff 1962, 21, Pl.8, f.2; F6rster 1982,<br />
197, Pl.20, f.17.<br />
L. 33 ptm, B. 35 ptm, <strong>and</strong> I. 8 um. St. 43. Europe, N.America New to <strong>Thail<strong>and</strong></strong>.<br />
36b. var. minutum (Heimerl) Krieger&Gerloff Pl.16, f.10.<br />
Krieger & Gerloff 1962, Gatt. Cosm. 1, 24, Pl.8, f.8.<br />
L. 26.4 pm, B. 22 ptm, <strong>and</strong> I. 5.3 xtm. St. 27. Indonesia (Java), China, Europe, N. &<br />
S.America, Africa.<br />
36c. var. planctonicum Reverdin Pl.17, f.6.<br />
Krieger & Gerloff 1962, Gatt. Cosm. 1, 24, Pl.8, f.9.<br />
L 27-29 ptm, B. 29.5-34 gm, <strong>and</strong> I. 6.5-7 ptm. St. 23. Cosmopolitan.<br />
37. C. dichondrumW.&G.S.West Pl.18,f.25.<br />
Krieger 1932, 175, Pl.12, f.10.<br />
L. 20 Ltm, B. 17.6 pm, <strong>and</strong> I. 5.7 Ltm. Cells small, slightly longer than the breadth,<br />
deeply constricted, sinus narrowly linear; semicells truncate-subcircular, apex flattened,<br />
apical angles broadly rounded, lateral margin convex <strong>and</strong> convergent, lateral angles<br />
broadly rounded. St. 49. Indonesia (Sumatra, Bali). New to <strong>Thail<strong>and</strong></strong>.<br />
38. C. dtspersum Johnson var. truncatum (W. & G.S.West) Krieger & Gerloff<br />
Krieger&Gerloff 1962, Gatt. Cosm. 1, 46, PL12, f.8. PL27, f.10.<br />
L. 53 ym, B. 50.5 ptm, <strong>and</strong> I. 15.4 "m. Semicells subtrapeziform, apex straight but<br />
slightly undulate, lateral margin crenulate <strong>and</strong> slightly convex; cell wall punctate. St. 2.<br />
Burma. New to <strong>Thail<strong>and</strong></strong>.<br />
39. C. divergens Krieger Pl.51, f.20.<br />
Krieger 1932, 175, Pl.11, f.20.<br />
L. 20-26 um, B. 20.7-24 ptm, <strong>and</strong> I. 5-6.5 "m. Sts. 12,51. Indonesia (Java). New<br />
to <strong>Thail<strong>and</strong></strong>.<br />
40. C. doliformeW&G.S.West Pl.18,f.14.<br />
Prescott et al., 1981, 2:3, 129, Pl.98, f.9-10.<br />
L. 29-29.5 "m, B. 17-18 ptm, <strong>and</strong> I. 5.3-6.5 #m. Semicells truncate-pyramidate,<br />
lateral margin straight or slightly undulate (undulations 3 in number), apex faintly re-<br />
tuse, apical <strong>and</strong> basal angles obtuse <strong>and</strong> noN rounded. This species is similar to C.
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