Tetrasporic Sporopylls of Delesseria Middendorffii Rupr' 

 PL CXCI, Fig. 8-1 1. 



Addition to the description of Delesseria Middendorffii illust- 

 rated in the Icones Vol. II, no. 7, p. 118-120, PL. LXXXIV^ 

 LXXXV, fig. 1-7. 



Tetrasporic sporophylls are proliferated solitarily or sub- 

 fasciculate'.y from the both sides of the midrib on both surfaces, 

 globular, oval, oblong or obovate, thick and slightly depressed, 

 shortly petiolated, sometimes winged along the margin, 1.5-2.5 mm 

 long, 1.5-2 mm broad. In the cross-section of sporophyll two 

 layers of tetraspores are observed on the upper and lower sides 

 of the primary or fundamental layer and on both sides of the 

 midrib. They are formed from sub-cortical cells lying between the 

 epidermal and primary layers. 



PL. CXCI, fig. 8-1 1. Fig. 8: leaf bearing tetrasporic sporo- 

 phylls of Delesseria Middendorffii, Rupr., -\. Fig. 9 : portion of 

 the same, -*[-. Fig. 10 : sporophyll seen from the marginal side, 

 magd. Fig. II : half of the cross section of sporophyll, ^. 



Laurencia pinnatifida (Gm.) Lam. 



Ncm. Jap ! hane-soso. 



PL. CXC1I. 



Laurencia pinnatifida (Gm.) Lamour. Essai p. 42 ; J. Ag. 

 Sp. Alg. II, p. 764 ; Id. Epicr. p. 656 ; Kiitz. Sp. Alg. p. 856 ; Id. 

 Tab. Phyc. XV, Tab. 66, f. a-c ; Harv. Phyc. Brit., Tab. 55; 

 Hauck Meeresalgen, p. 208 ; De Toni Syll. Alg. IV, p. 798 ; 

 Okam. Synop. H ^ll^St^JI (2nd. ed.) p. 69. Fucus pinnatifidus 

 Gmel. Hist. Fuc. p. 156, t. 16, f. 3 ; Turn. Hist. Fuci, t. 20. 



Fronds coespitose, rising from a scutate disc, 5-15 cm high, 

 almost cylindrical at the base, more or less compressed upward, 



