Padina crispata

Padina crispata Thivy

Padina crispata Thivy in W. R. Taylor, 1945:100; Dawson, 1957b:10, fig. 2 (type specimens); Dawson, 1959a:4–6; Dawson, 1961b:389; Dawson, 1962b:200, fig. 82;

Huerta-Múzquiz and Tirado-Lizárraga, 1970:127; Chávez B., 1972:268; Huerta-Múzquiz and Garza-Barrientos, 1975:7; Chávez B., 1980:47; Schnetter and Bula Meyer, 1982:64, pl. 10: fig. H; Huerta-Múzquiz and Mendoza-González, 1985:46; L. Aguilar-Rosas and R. Aguilar-Rosas, 1993:202; González-González, 1993:443; León-Tejera and González-González, 1993:497; Mateo-Cid et al., 1993:50; Stout and Dreckmann, 1993:7; Ávila-Ortiz and Pedroche, 1999:357, figs. 1–5; L. Aguilar-Rosas et al., 2000:132; Mateo-Cid et al., 2000b:207, figs. 45, 46, 79, 103; López et al., 2004:10; Ávila-Ortiz and Pedroche, 2005:146, figs. 6 (isotype), 7–23; Servière-Zaragoza et al., 2007:8; Pedroche et al., 2008:48.

Padina tetrastromatica sensu Setchell and Gardner, 1930:149 [with a query], pl. 8: fig. 41; Chávez B., 1980:49; Dawson, 1961b:389 [with a query]; Servière-Zaragoza et al., 1993:482; González-González et al., 1996:156; Ávila-Ortiz and Pedroche, 1999:355 [non Padina tetrastromatica Hauck, 1887:43, which is Padina antillarum (Kützing) Piccone, 1886:36 (see Wynne, 1998b:271; Wynne and De Clerck, 1999:286, figs. 1–10)].

Algae flat, erect flabellate blades, up to 6.0 cm tall and to 6 cm wide; uncalcified on upper side of blade, calcified on upper portion of lower side of blade; blade margins entire to divided or torn, into narrow crispate lobed blades, 1–4 cm wide; with a distinct stipe 0.5(–1.0) cm long and up to 1.0 mm thick; attached by stupose rhizoidal holdfast. Hair lines in zones 0.75 to 3.0 mm apart, either opposite on both sides of blade or only on upper surface. Outer margin near inrolled margins of 2 cell layers, 30–48 µm thick, shortly becoming 2–4 cell layers, 65–120 µm thick; midportion of 4–6 cell layers, 120–130 µm thick; lower portion of 6–8(–9) layers, 160–220 µm thick. Cortical cells: upper side 15–25 µm tall by 10–20 µm wide; lower side (12.5–)17–25 µm tall by 20–30 µm wide. Medullary cells 20–50(–65) µm tall by 45–75(–105) µm wide.

Sporangia 116–160 µm tall by 63–75 in diameter; in sori without an indusium; on lower surface of blade; in irregular rows or scattered between hair zones. Oogonial sori, linear to round, up to 250 µm in diameter, with an complete indusium when immature, later indusium only partially covering or absent; oogonia up to 69 µm tall by 33–58 µm in diameter. Antheridial sori up to 690 µm, with an indusium; on lower surface in lines or patches; antheridia 50–67 µm long by 19–30 µm wide (after Ávila-Ortiz and Pedroche, 1999, 2005).

HABITAT. Intertidal.

DISTRIBUTION. Gulf of California: Playa El Coloradito; Bahía Concepción to Cabeza Ballena. Pacific coast: Punta Banda (Baja California) to Laguna San Ignacio (Baja California Sur); Isla Socorro (Islas Revillagigedo); Isla María Madre (Islas Tres Marias); Nayarit to Oaxaca; El Salvador; Costa Rica; Panama; Colombia.

TYPE LOCALITY. Gulfo Dulce, Pacific Costa Rica.