NO. 1 TAYLOR: PACIFIC MARINE ALGAE 265 



LEJOLISIABornet, 1859 



LejoHsia colombiana n. sp.^®^ 



Plate+, Figs. 3-10 



Plant small, the basal filaments creeping, to 24 [x. diam., the branches 

 chiefly erect, to 3-5 mm tall, little tapered, about 18 ju, diam., the cells 

 about 100 /x long below, 70 fx long above, simple or very sparingly 

 branched, the branches erect, the apical cells long, obtuse ; sporangia uni- 

 lateral on the erect branches, on 1-2-celled upcurved stalks, tetrahedral, 

 oval, about 28 /a diam., 42 [jl long; speraiatangia in clusters terminating 

 the erect axes or lateral branchlets, the clusters cylindric-oval, 100-115 /i 

 long, 35 IX diam. ; cystocarps generally terminal on few-celled lateral 

 branchlets, only the outer gonimoblast cells forming carpospores, produc- 

 ing from below a close turbinate pericarplike investment reaching 175 /* 

 diam., 150 /a long. 



This extremely interesting new species is only the third in the genus, 

 one being known from the Mediterranean area (Bornet 1859, p. 88, 2 

 pi.; Feldmann-Mazoyer 1940, p. 377, figs. 78, 148) and the other from 

 New Guinea (J. Agardh 1892, p. 126, pi. 2, figs. 1-8). It is intermediate 

 in size between the two, and differs in many details from either. 



Colombia: Valle, forming tufts, I. Gorgona, no. 34-495B p. p., 

 (TYPE), 12 Feb. 1934. 



GYMNOTHAMNION J. Agardh, 1892 

 Gymnothamnion elegans (Schousboe) J. Agardh 



Taylor 1928, p. 194, pi. 27, figs. 1-4; Setchell & Gardner 1930, p. 

 167; Feldmann-Mazoyer 1940, p. 354, fig. 134. 



These plants resemble Mme. Feldmann's illustrations very closely 

 except that they are a bit more regularly filiculoid. In the Florida material 

 the primary branchlets were regularly beset with lesser branchlets on the 

 upper side, except in the lax lower part of the plant, but that was not the 

 case with the erect tufted plants from Albemarle Point. Setchell and 

 Gardner report this plant from I. Clarion, but otherwise it is not known 

 from the eastern Pacific. 



Ecuador: Archipielago de Colon, scarce on an exposed rock with 

 Callithamnion, Pta. Albemarle, I. Isabela, no. 34-120 p. p., (tetrasporic), 

 12 Jan. 1934. 



165 LejoHsia colombiana n. sp.— Filamentis basalibus serpentibus, ramis magna 

 ex parte erectis, ad 3-5 mm altitudine, 18 M. diam., cellulis ad 100 M' diam., celluHs 

 apicalibus longis obtusisque; tetrasporangiis unilateralibus in stipitibus 1-2 cellu- 

 larum sursum curvatis, circa 28 M' diam., 42 n long. ; spermatangiis m corymbis 

 cylindrico-ovatis, 35 M' diam., 100-115 ^ long., cystocarpis termmalibus in ramulis 

 lateralibus, investimento arcto, turbinato, pericarpiformique ad 175 ^ diam., 150 

 M- long, inferiore a parte producto. Planta typica in loco dicto I. Gorgona, Colombia, 

 legit W. R. Taylor no. 34-495B, 12 Feb. 1934. 



