New Zealand Journal of Botany abstracts
Saprolegnia milnae (Saprolegniales, Straminipila), a new species from an Argentine river (Tierra del Fuego Province, Argentina)
Mónica Mirta Steciow
Instituto de Botánica Spegazzini
53 N° 477
(1900) La Plata
Buenos Aires, Argentina
Abstract Saprolegnia milnae is described from litter (floating dead twigs, leaves, and roots) in the Milna River, Ushuaia Department, Tierra del Fuego Province (Argentina). The new species is illustrated and compared with other species of the genus. Distinguishing characteristics of S. milnae are the production of smooth oogonia and predominantly contorted androgynous antheridial branches, and also monoclinous and diclinous ones. The oogonial stalks are predominantly bent, curved or once coiled; oospores are subcentric, (1-)3-23(-40) per oogonium, and are variable in size, reaching a diameter of up to 60 µm.
Keywords Stramenopiles; Oomycota; Saprolegnia; Argentina; systematics; new species
B01059 Received 6 December 2001; accepted 19 June 2002; published 11 September 2002
New Zealand Journal of Botany, 2002, Vol. 40: 473-479
0028-825X/02/4003-0473 $7.00 © The Royal Society of New Zealand 2002
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