A MoDOgrapIi of the Genus Alaria. 129 



AlaHa lanceolata Kjellm. 



(Plate XVII, figs. 1-3.) 



Om Beringhafvets Algflora, p. 39, Tab. 5, fig. 1-3.— De Toni: 

 Syll. Alg. Ill, p. 331. 



? = AIaria lanceolata Saunders : Harr. Alaska Expod., Alagse, p. 



426, PL LIII. 

 "? = Alaria dol ichor Jiach is Setch. : in Coll., Holden and Setch. : 

 Phyc. Bor.-Amcr., No. XIJ. 



Definition of the species. lioot, holdfast of dendritic ramifica- 

 tion. Blade linear-lanceolate, 1-2 meters in length, coriaceo- 

 membranaceous, with cryptostomata except in lower portion, 

 margin entire, more or less undulately plicated, base cnneate. 

 Stipe very short, hardly a few centimeters in length, snbterete. 

 Midrib smooth, complanated, 4-7 mm. broad, slightly prominent. 

 Sporophylls metasoric, mimerons, limited to a short length of the 

 stipe, but distinct, linear- cuneate or cnneate- spa thulate, 6-10-15 

 mm. in breadth, 12-20 cm. in length, snbcoriaceons. Sorns on both 

 surfaces of each sporophyll in a continuous patch, generally oc- 

 cupying a greater part of the surface, leaving a terminal portion 

 and a narrow border along the margin sterile. 



Remarls on the affinity to other species. This has been a rather 

 incompletely defined species. Saunders, Setchell, Collins, etc., 

 reported the present species from the northwest coasts of North 

 America. I am, however, of the opinion that the specimens which 

 they have determined as this may be more safely referred to other 

 species, such as A. prœlonga Kjellm., A. marginata H. et Pi., or 

 A. clolichorhachis Kjellm. 



The present spocies has some resemblance to A. angusta 

 Kjellm., A. tceniata Kjellm. and A. prœlonga Kjellm. It can be 



