Padina vickersiae Hoyt

• Region

  North America

• Country

  United States of America

• State/Province

  North Carolina

• County/Municipio

  Carteret Co.

• City/Township

  Beaufort

• Coordinates

  34.7111, -76.6175

• Distribution

  Map all specimens of this taxon

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2. Padina Vickersiae Hoyt, sp. nov.*

* This preliminary diagnosis is published with the permission of the I'. S. Com-
hiissioner of Fisheries.

Spatoglossum variegatum Kvitz. Sp. Alg. 560 p.p. 1849.

Zonaria variegata Kiitz. Tab. Phyc. 9: 30 p.p. pi. 73. f. IT. 1839. Not
Zonaria variegata Lainour. Nouv. Bull. Sci. Soc. Fhilom. 1: 331. 1809.

Padina variegata Hauck, Hedwigia 26:, 42. 1887; Yickers, Phyc. Barb. 2:
37. pi. 8. 1908. Not Padina variegata Gaill. in Diet. Sci. Nat. 53:
371. 1828.

Thallus stipitate, 4-22 cm. tab, 5—37 cm. broad, entire when young, becom-
ing repeatedly more or less deeply laciniate, the segments varying from cuneate-
spatulate to fan-shaped, sometimes encrusted with lime, the interpilar zones
1.5-8 mm. wide, often inconspicuous in older parts, the sulterete, rhizoid
covered stipe commonly 3-12 mm. long; lamina of 2 or 3 layers of cells ac
revolute apical margin, of 4 layers throughout most of tballus, becoming 6-8
layers toward base; epidermal cells about one half as long as the central cells;
dioicous; antlieridia and oogonia in often broken lines near the middle of each
interpilar zone, occurring on both surfaces but chiefly on the ventral, the
oogonia with a thin evanescent indusunn, the antheridia naked; tetrasporangia
borne in a similar manner, often in scattered irregular sori near middle of
interpilar zone, the thin indusium commonly subpersistent.

Type a tetrasporic plant collected from Fort Macon jetty. Beaufort, North
Carolina, by W. D. Hoyt, August 23, 1»07. and deposited in the U. S. National
Herbarium. Representatives of this species have often been erroneously identified with
Padina'pavonia (L.) »Gaill. P. Durrillaei Bory. Padina dubia Hauck, from Bast
Africa, is a much closer relative and may prove to be identical.

In shallow water. New Providence, Berry Islands, and Eleuthera :—Bermuda
and North Carolina to Brazil. Type from North Carolina.

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