NO. 1 TAYLOR: PACIFIC MARINE ALGAE 281 



Myriogramme Kylinii n. sp.!*^*- ^"^"^ 

 Plate 92; Plate 93, Fig. 1 



Plants to 35 cm tall from a small disciform holdfast, short stalked, the 

 stalk 1-3 cm long, simple or sparingly divided, above flabelliform, dull 

 rose red, the blades cuneate or the lateral ones falcate, simple or split to 

 the base into broad secondaiy blades, the distal end 3-7 cm broad, divided 

 into short, pointed, truncate or redivided and narrow lobes 0.5-3.0 cm 

 long, with broad rounded sinuses; margins entire; macroscopic veins 

 prominent, numerous, subparallel, sparingly furcate and disappearing 

 toward the tips, below 1-2 mm broad, darker and thicker than the mem- 

 brane; veinlets and microscopic veins absent; the membrane with age 

 splitting between the veins nearly to the base of the plant, reducing it to 

 a long fringe; membrane one cell thick; veins showing a one-celled 

 chromatophore-bearing cortex on each side and a medulla about 5 cells 

 thick, the cells in moderately regular transverse series; reproductive 

 organs not seen. 



This very handsome plant cannot be placed with certainty among the 

 segregates of Nitophyllum because only seen in the sterile state, but it 

 undoubtedly belongs in the old collective genus Nitophyllum. It resembles 

 very considerably Myriogramme multinervis (Hooker /. & Harvey) Ky- 

 lin, but differs in frond size and shape, venation, and other features. The 

 veins certainly seem nearly dichotomous, but divide sparingly. Occasion- 

 ally a vein will arise independently between two others as the frond 

 widens, and continue out and fork like the rest. Rarely a vein originating 

 between two others will show distally a definite connection with each of 

 them, but there is no systematic anastomosis. Growth from the forward 

 margin appears to be without benefit of special apical cells, and intercalary 

 divisions are general. 



Ecuador: Archipielago de Colon, dredged at sta. 169 off Academy 

 Bay, I. Santa Cruz, no. 34-310 (TYPE), 20 Jan. 1934. 



176 Myriogramme Kylinii n. sp. — Planta ad 35 cm altitudine, stipite 1-3 mm 

 longitudine, subsimplici, laminis flabelliformibus, cuneatis aut laminis lateralibus 

 falcatis, simpHcibus aut usque ad basim fissis, parte extrema distali 3-7 cm lati- 

 tudine, lobos acuminates aut truncates, sinibus latis rotundatisque, praebente; venis 

 macroscopicis prominentibus, multis, subparallelis, sparse furcatis, infra fuscis et 

 1-2 mm lat., supra evanescentibus, membrana aliter crassitudine unius cellulae. 

 Planta typica in loco dicto I. Santa Cruz, Ecuador, legit W. R. Taylor no. 34-310, 

 20 Jan. 1934. 



^''" Named in appreciation of the important systematic studies in this family 

 of algae by Professor Harald Kylin. 



