100 



plant distributed in the Phycotheca Boreali-Amcricana under N. XL1V, 

 under the doubtful name of A. lanceolata, is to be referred to A. 

 marginata P. & R. 



It may be of interest to note that under N. 2255 in Herb. J. G. 

 Agardh at Lund, 1 found a specimen of the A. curtipes form, the 

 A. praelonga of Kjellman or, as I think it must be called, the A. 

 marginata P. & R., collected at the Golden Gate, near San Fran- 

 cisco, placed apart and under a manuscript name. 



A/aria marginata [3 musaeformis P. & R. (loc. cit., p. 12), as it 

 is found represented in the Herb. Imp. Acad. Se. of St. Petersburg. 

 consists of only a badly pressed biade. It seemed to me to be a poor 

 specimen of A. fistulosa f. stenophylla Setchell, for the costa, while 

 widc and very much squashed, showed evident symptoms of having 

 been characteristically and interruptedly fìstulous. 



Alaria valida Kjellman and Setchell was described in Setchell 

 and Gardner's Algae of Northwestern America (p. 278) from speci- 

 mens cast ashore on Unga Island, Alaska and also grovving along 

 the western shore of Whidbey Island, Wash. From the descriptions 

 of the various species, we had already considered the plants to be- 

 long to an undescribed species and this was confirmed by Kjellman, 

 who was inclined to place it near to A. grandi/olia J. Ag. An exa- 

 mination of type plants in Herb. J. G. Agardh (Nos. 2256-2260) has 

 convinced me that there is nothing to separate A. valida from A. 

 grandi/olia. They both bave the same sort of stout cylindrical stipe, 

 very long and narrow sporophylls, long and broad biade, and broad 

 midrib. In point of size, too, the plant of our northwestern shores 

 fully comes up to measurements of A. grandi/olia, the biade measu- 

 ring, in the larger specimens, as much as 4 to 5 meters in length 

 and i5 to 20 cm. in breadth. The sporophylls, too, sometimes mea- 

 sure as much as 5o cm. in length and 3 to 6 cm. in width. 



The midrib may measure as much as 22 mm. in breadth. In 

 attempting a comparison with A. membranacea J. Ag., I found the 

 type material very unsatisfactory, but that species seems very much 

 more like A. Pylaii (Bory) Greville, under which Rosenvinge (loc. 

 cit., p. 87) has placed it as a variety. It has no dose resemblance 

 to A. marginata P. & R., as was suggested in the Algae of North- 

 western America (p. 278). On the other hand, the relationship to A. 



