Comprehensive Description

provided by North American Flora
Brevilegnia subclavata Couch, Jour. Elisha Mitchell Soc
42:229. 1927.
Mycelium reaching a diameter of 0.9 cm. on hempseed, the growth dense; hyphae short, up to 62 ju thick at base, branched; sporangia abundant, 30-100 by 108-140 m, terminal; secondary sporangia formed by cymose branching and also by successive formation in a basipetal series, as many as twelve sporangia sometimes being formed in a single row; spores 10.8-19 by 10.8-28.8 /x, varying from nearly spheric to cylindric, but usually distinctly polyhedral in shape, with a distinct, large vacuole, escaping by swelling and bursting of the sporangial wall or not rarely remaining within the sporangium and sprouting, without a swimming stage (experiments successful in other species fail to induce swimming here) ; oogonia formed in most cultures, 19-25 /j, in diameter, spheric, but more often slightly subspheric, borne on delicate, usually long stalks arising racemosely from much thicker main branches; eggs 1 5— 1 9 /£ in diameter, spheric, single in an oogonium, eccentric; antheridia on most oogonia, becoming practically empty during early development of the egg, borne on stalks of androgynous origin usually arising from the oogonial stalk. (Description compiled.)
Type locality : Cold Spring Harbor, Long Island, New York.
Habitat: Soil.
Distribution: Known only from the type locality.
bibliographic citation
William Chambers Coker, Velma Dare Matthews, John Hendley Barnhart. 1937. BLASTOCLADIALES, MONOBLEPHARIDALES; BLASTOCLADIACEAE, MONOBLEPHARIDACEAE -- SAPROLEGNIALES; SAPROLEGNIACEAE, ECTROGELLACEAE, LEPTOMITACEAE. North American flora. vol 2(1). New York Botanical Garden, New York, NY
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