Phormidium rubrum Tilden

  • Filed As

    Phormidiaceae
    Phormidium rubrum Tilden ( isotype )

  • Collector(s)

    J. E. Tilden s.n., 02 Jul 1896

  • Location

    United States of America. Wyoming. Yellowstone National Park, between Middle and Upper Geyser Basins, in overflow from small hillside spring.

  • Habitat

    In overflow from small hillside spring.

  • Identifiers

    NY Barcode: 00953246

    Occurrence ID: 15952661-e1b3-491d-8230-9036f2d4a834

  • Exsiccatae

    American Algae

    Exsiccatae Number: 186

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  • Region

    North America

  • Country

    United States of America

  • State/Province

    Wyoming

  • Locality

    Yellowstone National Park, between Middle and Upper Geyser Basins, in overflow from small hillside spring

  • Distribution

    Map all specimens of this taxon

Josephine E. Tilden. American Algae.

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00953246

186 Phormidium rubrum n. sp.

Stratum thin, scarlet (miniatus); filaments somewhat straight; sheath vis-
ible under high powers; trichomes fragile, frequently interrupted,
neither attenuate nor curved, not constricted at joints, 1 mik. in diam-
eter; articulations quadrate or a little longer than broad; dissepiments
not or rarely visible.

In overflow from small hillside spring. Water tepid.

Between Middle and Upper Geyser Basins, Yellowstone National Park.

J. E. T. 2 J1 1896.

See no, 123. Forms the red or pink portions of this specimen.

This species is near P. luridum and P. purpurascens. From the former it
differs in not having trichomes constricted at joints. From the latter it
differs in not having strongly tortuous filaments nor granulated dissepi-
ments. It is also to be distinguished from both by the color of the
stratum and of the trichomes, and the length of the articulations.

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Josephine E. Tilden. American Algae.

COLUMBIA

186 Phormidium rubrum n. sp.

Stratum thin, scarlet (miniatus); filaments somewhat straight; sheath vis-
ible under high powers; trichomes fragile, frequently interrupted,
neither attenuate nor curved, not constricted at joints, 1 mik. in diam-
eter; articulations quadrate or a little longer than broad; dissepiments
not or rarely visible.

In overflow from small hillside spring. Water tepid.

Between Middle and Upper Geyser Basins, Yellowstone National Park.

J. E. T. 2 J1 1896.

See no, 123. Forms the red or pink portions of this specimen.

This species is near P. luridum and P. purpurascens. From the former it
differs in not having trichomes constricted at joints. From the latter it
differs in not having strongly tortuous filaments nor granulated dissepi-
ments. It is also to be distinguished from both by the color of the
stratum and of the trichomes, and the length of the articulations.

(|SoType

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RANCIS DROUET ^ ’yfj

00953246