NO. 1 DAWSON: MARINE RED ALGAE OF PACIFIC MEXICO 101 



Santos; Gardner 4950, Ensenada; D. 85, 149, vie. Cabo Colnett; D. 

 1504, Punta Santa Rosalia; D. 9796, Isla Cedros; D. 9404, Islas San 

 Benito; D. 6579, Bahia Tortuga; D. 9174, Bahia Asuncion; D. 13-40, 

 16-40, 9339a, Bahia Santa Maria, Isla Magdalena. 



Cryptopleura violacea (J. Agardh) Kylin 



PL 46, fig. 3 

 Kylin 1924, p. 89; Dawson 1945, p. 67; Dawson 1949, p. 223; Dawson, 

 Neushul & Wildman 1960, p. 56. Nitophyllum violaceum J. G. Agardh 1876, 

 p. 700. 



Thalli mostly 10-20 cm. tall, purplish-olive to purplish-red, consist- 

 ing of a small, prostrate, membranous epiphytic or saxicolous base giving 

 rise to erect, stipitate, membranous, subdichotomous or irregularly divid- 

 ed blades; stipe extending into a ± distinct midrib in lower blade 

 parts, then into anastomosing veins extending to the apices of segments; 

 segments ligulate, 5-10 (15) mm. broad, with broadly rounded apices, 

 the margins often entire, sometimes with a few proliferous outgrowths; 

 tetrasporangial sori usually linear and borne just within the blade 

 margins of upper segments, sometimes extending 5-6 cm. along several 

 segments, sometimes also borne on small proliferous bladelets from 

 margins of segments ; cystocarps to 1 mm. in diam., scattered irregularly 

 over upper blade surfaces. 



Type: According to Kylin, in the Agardh Herbarium, Lund, 

 Sweden, under the name Nitophyllum farlowianum var. 



Type locality: San Francisco, California. 



Mexican distribution: Pacific Baja Calif. — D. 158-45, Cooper 

 853, near Punta Descanso; D. 20904, 20940 (Neushul), cove n. of 

 Punta Cabras; D. 9-45, 63, 70, 156, near Cabo Colnett; D. 1146b, 1135, 

 1228, 8671, nr. Punta Baja; D. 1553, near Punta Maria; D. 9483, 

 Punta Abreojos; D. 7265, 9339, Punta Hughes, Bahia Santa Maria, 

 Isla Magdalena. 



Botryoglossum farlowianum (J. Agardh) DeToni 



PL 50 

 DeToni 1900, p. 676; Wagner 1954, p. 329; Dawson 1949, p. 223, Dawson, 

 Neushul & Wildman 1960, p. 44. Dawson, Neushul & Wildman 1960a, p. 26. 

 Nitophyllum farlowianum J. Agardh 1898, p. 95. 



Thalli 10-30 cm. tall, bright red to purplish-red, consisting of sev- 

 eral erect, branched, pseudostipitate, ligulate blades from an attach- 

 ment of haptera ; blades narrowly flabellate, subdichotomously branched, 

 membranous, the segments 1-3 cm. broad, provided with numberous ± 

 longitudinal, anastomosing veins, sometimes with a central part of the 

 vein system forming a midrib, the lower blade parts often eroding away 

 to a pseudostipe of thickened veins; upper segments usually densely 



