54 Vniversity of ('oliforma Publications i)i Jiofani/ [Vol.10 



Fucus evanescens f. irregularis Kjellm. 



"f. circa 13 cm. alta. fronde crcbre irregiilariter dichotoma. seg- 

 mentis plurimis ad eostas validas reductis, summis tantum alatis. 

 angiistis. obsolete costatis, apicibns truncatis; receptacnlis limitatis 

 ovatis. obovatis. oblongis vel obcordatis; scapbidiis minoribiis." 



"Beringon, sparsam; spridd iuom litoralrc'iionen; nied rcccp- 

 takler." 



Kjellman. Om Beringh. Algflora, 1889. p. .35. 



A photograph of the type specimen indicates to me that this form, 

 segregated by Kjellman on Bering Island, is hardly to be considered 

 an entity but rather a battered and distorted plant of some other form. 

 To my knowledge it has not been recognized since its original discovery ; 

 bnt if a valid form, it is quite likely to occnr on the North American 

 side of the Pacific Ocean, hence I am inclnding it here as a possibility. 



Fucus evanescens f. limitatus Kjellm. 



Plate .58 



"f. fronde caulescente ; segmentis tennioribns. snbmembranaceis. 

 subdivaricatis, infimis euneato-linearibus. snperioril)us sublinearibus. 

 3-5 mm. latis; costa parnm prominente; receptaenlis distinete limi- 

 tatis, snbpetiolatis vel simplicibns. ovato-ellipsoideis vel semel furcatis. 

 ramis pins minus longis. divarieatis. apice rotnndatis. " 



"S :t Lawrencebay, Port Clarence, pa bada stallena temligen ymnig: 

 nagot salLskaplig inom sublitoralregionen ; med receptakler." 



Kjellman, Om Beringh. Algflora, 1889. p. 34. 



Fronds caulescent or subcauleseent, sub'membranaceous, dieho- 

 tomous. spreading, with rounded angles, yellowish brown, darker 

 brown on drying: segments short, cuneate-linear. apices rounded, 

 truncate, midrib distinctly reduced upward, cryptostomata few : 

 receptacles di.stinctly delimited, subpedieilate, seemingly lateral, entire 

 or bifurcate, ovoid-ellipsoidal. 12-18 mm. long. 8-12 mm. wide. 



Plate .59 



Growing in the upper sublittoral belt. Port Clarence to Xoi-ton 

 Sound. Alaska. 



Kjellman, Port Clarence, Alaska; R. C. McGregor, no. 5683 (Herb. 

 Univ. Calif., no. 99107), Besbora Island. Norton Sound. Alaska. 



Kjellman, lor. cit.; De-Toni. Syll. Alg.. 1895. p. 202; Setchell aii.l 

 Gardner, Alg. N.W. Amer., 1903. p. 282. 



The only material of which T am aware that has previously been 

 referred to this form since its establi.shment by Kjellman is that 

 referred by Setchell and Gardner {loc. cif.) from Norton Sound, and 

 the same material, two small fragments of plants, is again referred 



