A Monograph of the Geniis Alaria. ' 127 



Alarla tœniata Kjellm. 



(Plate Xyi, figs. 1-5.) 



Om Beringhafvets Algflora, p. 36, PI. 7, fig. 1-3. 



= Alaria esculenta angustifolia P. et R. : IlUistr. Alg., p. 11, p.p. 



Definition of the species. Eoot, holdfast of hemispherical shape 

 in general outline, with the rhizines at first thick and complanated 

 and broadened outwards, soon ramifying quickly and irregularly, 

 each final segment terminating in a hapter. Blade linear or band- 

 form, attaining to 3.70 meters in length, but measuring 3.5-5.0 cm. 

 in the maximum breadth, coriaceous, cryptostomata wanting, 

 margin entire, splitting obliquely to the midrib in the older parts ; 

 base of blade cuneate or attenuate ; Stipe 5-6 cm. in length, 

 cyhndrical below, 2.5-3.0 mm. in diameter, terete above, and sud- 

 denly narrowed at the transition point. Midrib smooth, complanat- 

 ed, 2-3 mm. broad, prominent above the blade on both surfaces 

 with angulate edges, continuous to the stipe below. Sporophylls 

 metasoric, numerous, fasciculate, limited to an abruptly expanded 

 short length near the upper end of the stipe, adding new ones 

 successively upwards as well as between the older ones, linear- 

 lanceolate, attenuated towards the base ending in filiform petioles, 

 acute or tapering at the apices. Sorus occupying a greater part 

 of the surface of sporophyfi, leaving a terminal portion and a 

 narrow border along the margin sterile. 



Remarks on the species. After a close study of the original 

 specimen of A. tœniata Kjellm. in the Botanical Museum of Upsala 

 I have little doubt of its identity with the Alaskan specimen of 

 A. esculenta angustifolia P. et R. in the herbarium of the Academy 

 of Science of Petrograd. The limitation of f. angustifolia P. et R. 



