Isactis centrifuga Bornet ex Collins

  • Filed As

    Rivulariaceae
    Isactis centrifuga Bornet ex Collins ( type )

  • Collector(s)

    F. S. Collins s.n., 10 Jun 1900

  • Location

    United States of America. Rhode Island. Newport Co. Newport. Ochre Point, on soft crumbling rocks at low water mark.

  • Identifiers

    NY Barcode: 02419447

    Occurrence ID: 3cf67284-899f-4252-b9f3-81418910bb87

  • Exsiccatae

    Phycotheca Boreali-Americana, a collection of dried specimens of the Algae of North America

    Exsiccatae Number: 757

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  • Region

    North America

  • Country

    United States of America

  • State/Province

    Rhode Island

  • County/Municipio

    Newport Co.

  • City/Township

    Newport

  • Locality

    Ochre Point, on soft crumbling rocks at low water mark

  • Coordinates

    41.4709, -71.2989

  • Coordinate Uncertainty (m)

    495.369

  • Georeferencing Method

    Georeferencing Quick Reference Guide, Version 2012. Located coordinates on shore closest to geogr. center of Ochre Point. Measured from selected coordinates to farthest extent of the point to find linear extent (483.80 m). Input information into MaNIS Georef. Calc. to find uncertainty radius.

  • Geodetic Datum

    WGS84

  • Distribution

    Map all specimens of this taxon

NEW YORK BOTANICAL GARDEN
02419446
Phycotheca Boreali-American*. Collins, Holden, and Setehell.
756.	Scytonema (Petalonema) junipericola Farlow.
“Fairyland”, Bermuda, Jan., 1900.
W. G. FARLOW.
Forming indefinite, pulvinate, tomentose, black expansions, .2- .3
mm. high, basal filaments nearly prostrate, .014- .016 mm. in diameter,
sheath about .002 mm. thick, geminate branches numerous, erect, soon
dividing into repeatedly tolypothricoidal, tortuous, corymbose branch-
lets, upper filaments .012- .014 mm. in diameter, trichomes gradually
diminishing to .005-.006 mm. in diameter, with sheaths increasing to
.005 mm. in thickness, lamellate with diverging lamellae, apex obtuse.
Cells narrowly discoidal below, becoming cuboidal and often torulose
above ; heterocysts .011-.012 by .006-*007 mm., breadth greater than
the length.
Common, forming dark velvety patches on the bark of Juniperus
Bermudiana. In habit resembling S. Cortex Wood, but a true Peta-
lonema, most nearly related to S. crustaceum Ag., but easily dis-
tinguished from that species by the size of the cells.
W. G. P.
NEW YORK BOTANICAL GARDEN
02419447
Phycotheca Boreali-Americana. Collins, Holden, and Setcbell.
757.	Isactis centrifuga Bornet.
On soft crumbling rocks at low water mark, Ochre Point, Newport^
jgRhode Island, June 10, 1900.
F. S. COLLINS.
The description of this species will be published in Khpdor% for
Feb., 1901.
02419446
02419447