﻿PLATE XL 



Stenogramma interrupta (Ag.) Mont. 



TYLOCARPE/E (Gigartinace お). 

 Norn, Jap, Hasuji-gusa. 



Stenogramma interrupta Harv. Phyc. Brit. tab. GLVIF; Id. JNer, Bor. 

 Amer. tab. 19 C ； Id, Phyc. Austr. tab. 220 ； Kiitz. Sp. Alg. p. 873 ； Id. 

 Tab. Phyc. XVI， t. 21 ； J. Ag. Sp. Alg. II， p. 391 ； Id. Epicr. p. 215 ； 

 Johnst. and Croall Brit. Seaweeds II， p. 21, tab. 73 ； Johnson On 

 stcrwgram. in t err., 1892, in Ann. of Bot. VI, p. 361, tab. 23 ； De Toni Syll. 

 Alp*. IV. p. 239 ； Schmitz et Hauptfl. in Enpi. u. Prantl's Natiirl. Pflanzenfam. 

 p. 359. — Stenogramma Californicuvi J. Ap - . Sp. Alg. II. p. 392 ； Kiitz. Sp. 



Alg. P- 874. - . — r 



Root, a small conical disc. Frond flabelliform, 4-10 cm. 

 long and broad, rising from a small filiform stem which soon 

 passes into a cuneate membrane ； this membrane expands and forks, 

 and afterward is repeatedly divicted more or less in regulary di- 

 chotomous manner. Segments broadly linear, 0.5 -t cm. broad, 

 erecto- patent or spreading with blunt apices and axils. Sometimes 

 one of the segments is accidentally torn off, and one or more 

 proliferous elongations arise from the harmed ends, which become 

 dichotomous like the rest. The margin which is usually quite 

 flat and entire, sometimes throws out minute, lobed, and some- 

 what fringed processes. Cystocarps linear, occupying" the centre 

 of the segments after the manner of a midrib, but never con- 

 tinuous, being always interrupted about the axils. Tetraspores 

 forminp- roundish or oval, wart-like, prominent nemathecia which 

 are scattered on both surfaces. Colour a bright pinkish-red, 



PI. XI-XV, Jan., 1901. 



