Myriophyllum propinquum

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Myriophyllum propinquum


Aquatic or semiterrestrial. Flowers solitary in the upper leaf-axils, the upper ♂, the lower ♀, often ☿ in between, or dioecious. Fruit 0.6-1.2 by ½-1 mm, the mericarps terete, apically spreading by the cushionlike thickened style-bases, with long tubercles at least at the base, punctate.


Asia-Temperate: Korea present; Manchuria present; Taiwan (Taiwan present), Australasia: New South Wales (New South Wales present); Queensland (Queensland present); Tasmania (Tasmania present); Victoria (Victoria present), E. Asia present, Heilong Jang present, Japan present, NE. China present, New Zealand present, S. Australia present, S. China present, S. Yunnan present, W. Australia present, Whusuli Jiang present
New Zealand, Tasmania, Australia (S. Australia, Victoria, New South Wales, Queensland, W. Australia) and E. Asia: NE. China (Heilong Jang, Whusuli Jiang; Manchuria), Korea, Taiwan, Japan, S. China (S. Yunnan). .


Extremely variable in the Australian region, especially in vegetative parts. M. pro-pinquum and M. ussuriense differ only in minor vegetative characters.
The area is strongly disjunct. One sterile collection from West New Guinea (Wissel Lakes, EYMA 4733, at c. 1600 m) might belong to this species or to M. verticillatum.


CHEESE-MAN 1906: Man. New Zeal. Fl., ed. 1: 151
CHEESEMAN 1925: Man. New Zeal. Fl., ed. 2: 624
ALLAN 1961 – In: Fl. New Zeal.: 253
CURTIS 1956 – In: Stud. Fl. Tasm.: 190
MEIJDEN 1969 – In: Blumea: 310
OHWI 1965: Fl. Jap.: 661
SCHINDL. 1905 – In: Pfl. R.: 89
EWART 1930: Fl. Vict: 886: t. 309 excl. c
BLACK 1952 – In: Fl. S. Austr., ed. 2: 645
KIRK 1899: Stud. Fl. New Zeal.: 150
BTH. 1864 – In: Fl. Austr.: 487
SCHINDL. 1905 – In: Pfl. R.: 86