Lemna trisulca

Primary tabs

Lemna trisulca

Description

Submerged aquatic, only floating at the surface when flowering; Ovary with 1 amphitropous ovulum. Fruit broad, more or less symmetric. Seed ribbed.

Distribution

Aru Is present, Asia-Tropical: Jawa (Jawa presentpresent); New Guinea present; Philippines (Philippines present), Bogor present, Luzon present, Maikoor I present, Mindanao present, North Sumatra present, S. Moluccas present, South America absent, Toba Lake present, inundated rice-fields near Bandung and Garut present, worldwide present
Worldwide, but curiously absent from South America, extremely scarce in Malesia: North Sumatra (Toba Lake, not collected, cf. STEEN. 1932), Philippines (Luzon, Mindanao), S. Moluccas (Aru Is.: Maikoor I. leg. BECCARI, 26-6-73), and New Guinea.
For Java recorded from Bogor by MIQUEL (1855, l.c.) and again by MASSART () from inundated rice-fields near Bandung and Garut. No other botanists or collectors have ever found it in Java, so that we may safely assume that these two records rest on errors.

Citation

MOENCH 1794: Meth.: 319
F. M. BAILEY 1902 – In: Queensl. Fl.: 1700
WILLIS 1962 – In: Handb Pl. Vict.: 271
Benth. 1878 – In: Fl. Austr.: 162
OHWI 1965: Fl. Japan: 265
BACK. 1924 – In: Handb. Fl. Java: 2
DAUBS 1965: Monogr. Lemnac: 32-34
Miq. 1855 – In: Fl. Ind. Bat.: 222
BLACK 1948 – In: Fl. S. Austr., ed. 1: 172
K. SCH. & LAUT. 1905: Nachtr. Fl. Schutzgeb.: 62
SCHLEID. 1839 – In: Linnaea: 391
KOORD 1911 – In: Exk. Fl. Java: 268
Merr. 1923 – In: En. Philip.: 190
ZUTSHI & KAUL 1963: pp. 95-96. – In: Trop Ecol.
STEEN. 1932: Arch. f. Hydrobiol.: 291
HUNDLEY & U CHIT KO KO 1961: List trees etc. Burma, ed. 3: 292
PRAIN 1903 – In: Bengal Pl.: 841
ST. HIL. 1805 – In: Exp. fam nat. germ. pl.: 53
KURZ 1866 – In: J. Linn. Soc. Lond.: 268
HESS, LANDOLT & HIRZEL 1967 – In: Fl. Schweiz: 496
CLARK & THIERET 1968 – In: Mich. Bot.: 73
Hook.f. 1893 – In: Fl. Br. Ind.: 557
MASSART 1895 – In: Bull. Soc. R. Bot. Belg.: 184
GAGNEP. 1942 – In: Fl. Gen. I.-C.: 1198
HAND.-MAZZ. 1932 – In: Symb. Sin.: 1368
HERTER 1954 – In: Rev. Sudam. Bot.: 185
LUNELL 1915 – In: Am. Midi. Natur.: 237
MCCANN 1942 – In: J. Bomb Nat. Hist. Soc.: 154
HEGELM. 1868: Lemnac: 134-136
FRANCH. & SAV. 1879 – In: En. Pl. Jap.: 12
BACK. & BAKH.f. 1968 – In: Fl. Java: 127
BACK. 1949 – In: Bekn. Fl. Java, (em. ed.): fam. 226, p. 2
LINNÉ 1867 – In: J. Bot.: 166
HEGELM. 1895 – In: Bot. Jahrb.: 293
MITRA 1958 – In: Fl. Pl. E. India: 86
GRISEB. 1864: Fl. Br. W. Ind. Is.: 512
Roxb. 1832 – In: Fl. Ind., ed. Carey: 566