Phylum:Oomycota >> Class: Oomycetes >> Order: Saprolegniales | ||||
BCRC Number: | NO BCRC Number! | |||
Scientific Name: | Achlya caroliniana | |||
Author: | Achlya caroliniana Coker. Bot. Gaz. 50; 381. 1910. |
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Description: | Gemmae abundant, filiform. Zoosporangia moderately abundant; fusiform; renewed sympodially; frequently furnished with one to several lateral discharge pores or tubes in addition to the terminal orifice. Zoospore discharge achlyoid. Oogonia abundant; lateral, frequently intercalary; spherical, frequently doliform and with apiculate; 55-30 μ in diameter, predominantly 35-45 μ. Oogonia abundant; lateral. Oogonial wall usually unpitted; smooth, occasionally sparely ornamented with papillate projections. Oogonial stalk 2 times the diameter of the oogonium. Antheridial branches usually lacking, frequently with hypogynal branch. Oospheres generally maturing. Oospores eccentric; spherical or ellipsoidal; not filling the oogonium. Oospores 1-8 in number, generally 1-4; 15-32.5 μ in diameter, predominantly 20μ. | |||
Specimens: | Collected four times from soil samples (Apr. 4, 1974. National Taiwan University Campus, Taipei). |
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Habitat: | Soil and water | |||
Distribution: | Taiwan |
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References: | Coker WC. 1923; Couch JN, 1932. |
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Provided: | T. S. Chiou and H. S. Chang |
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Note: | In our isolate the oogonium usually has no antheridial branch, frequently with hypogynal cell growing into the oogonium, the fertilization behavior is like that of Achlya hypogyna. | |||