Oscillatoria minnesotensis Tilden

• Region

  North America

• Country

  United States of America

• State/Province

  Minnesota

• County/Municipio

  Hennepin Co.

• City/Township

  Minneapolis

• Locality

  near University campus, on sides of stone quarry under dripping water

• Coordinates

  44.9744, -93.233

• Coordinate Uncertainty (m)

  838

• Distribution

  Map all specimens of this taxon

0

cm

6 7 8 9 10 L, xt v

The New York

copyright reserved Botanical Garden

BOTANICAL

Garden

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NEW YORK BOTANICAL GARDEN

		
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BOTANICAL

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Josephine E. Tilden. American Algae.

596. Oscillatoria m i n n e s ot e n s i s n. sp.

Stratum thin, dark aeruginous; trichomes more or less curved, especially
constricted at joints, 2.5 mic. in diameter, with straight or slightly bent
apex, neither attenuate nor capitate; pseudocysts in general quadrate, 2-4
mic. long; protoplasm homogeneous; dissepiments pellucid; apical pseud-
ocyst rotund; no calyptra.

On sides of stone quarry under dripping water.

Near University campus, Minneapolis, Minn.

Coll. Miss Gene Lilley 27 F 1902.

The plant differs from 0. geminata in the length of the pseudocysts, in tlu
absence of granules, and in its habitat. Like that species also, it resembles a
Phorwidiitm, but the trichomes when examined were oscillating rapidly thus

showino- conclusively that it was an Oscillatoria.

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