244 THE BOTANICAL MAGAZINE. iv.-i. xxx. No. 355. 



Agardii in Till Ak'-- System., 1. c, has kd inc to conchide that 

 the limitation of tlic species taken l^y J. Agardu is much 

 broader than that by C. Agardii. I am strongly inclined to 

 think it better to mention U. rigidn C. .\g. in an indejjcndent 

 specilic rank in the sense taken by its describer. It is not my 

 present enterprise to distinguish all the specimens of U. rigida J. 

 Ag. (not C. Ag.) in the Herbarium into different and proper 

 species. I have but to refer to the specimens and referrences 

 which have directly to do with the typical form of the species 

 in question. 



To the present species I refer U. conglobata Kjellm. together 

 with f. densa. The latter is nothing but a high tide form of i". 

 typica as Kjellman has already' suspected so. (1. c, ]>. 11). 

 He discussed the relationshi]) between, and pointed out the dis- 

 tinctions of, his species and U. rigida Ag. What he has related 

 on U. rigida, however, is not in the sense of C. Agardii but of 

 J. Agardii. If he had tried a comparison of his specimens with 

 C. Agardh's original at Lund, he should have never described 

 the Japanese plant as new^ All his statement on U. conglobata 

 appplies satisfactorih' to U. rigida C. Ag. 



I combine also U. fasciata f. caespitosa Setch. with the pre- 

 .sent species. The specimens in Phye. Bor.-Amar., in the copies I 

 have seen, exactU'^ coincide with U. conglobata f. dcnsa Kjellm. 

 The plant which passes as U. Lactuca var. rigida among the 

 American botanists appears to me certainly tliffcrent from U. 

 rigida Ag. 



Locality. Sagami Prov. (!); Yokohama (Kjellman); Shi- 

 moda, Idzu Prov. (!); Shima Prov. (I); Kii Prov. (I); Amakusa 

 (Kjellmax, under U. coglohata) ; Kagoshima, (Prof. S. Ikeda) ; 

 Loochoo (Wright, Harvey; Herb. Trinity Coll., Dublin, under 

 U. australis), (Kuroiwa, Heydrich ; Herb. Mus. Bot. Berlin, 

 under U. Lactuca), (Warburg, IIevdricu ; Herb. Mus. Bot. 

 Berlin, under Phyc. australis var. umbilicata) ; P'ormosa (War- 

 burg, Heydkicii ; Herb. Mu^. Bat. B,u-li;i, u ider U. Lactu:a); 

 Botel Tobago (G. Nakaiiara). 



Distribution. Mediterranean Sea; Atlantic coast of southern 

 Luropc; Red Sea; Dutch Indies; California. 



