GONIOTRICHUM 75 
Porphyra perforata, described from California Бу J. Agardh in 
1882, is evidently very closely allied to P. Kunthiana and may 
prove to be synonymous. However, we have not noted in P. 
perforata little islands of antheridia among the sporocarps, a 
character that may sometimes be observed in P. Kunthiana; the 
sterile cells intermingled with the sporocarps in P. perforata are 
commonly larger than the corresponding cells in P. Kunthiana. 
Porphyra laciniata has been reported from the Island of San 
Lorenzo, near Callao, Бу Piccone (Alg. Vettor Pisani 51. 1886). 
GONIOTRICHUM Kiitz.* Linnaea 17: 89. 1843; 
Phyc. Gen. 244. 1843 
Diconia Нагу. Man. Brit. Маг. Alg. 219. 1840 (ей. 2]. 
Goniotrichum Alsidii (Zanard.) comb. nov. 
Bangia А 1 Zanard. Bibl. Ital. 96: 136. 1839; Syn. Alg. 
Mar. Adriat. 115. pl. 6. f. 7. 1841. 
Bangia elegans Chauv. Alg. Norm. no. 150 (without diagnosis); 
Mém. Soc. Linn. Norm. 6: 13. 1838 (nomen nudum); 
Recherches 33. 1842. Harv. Рһус. Brit. pl. 246. 1846-51. 
Goniotrichum elegans (Chauv.) Zanard. Not. Cell. Mar. 69. 1847. 
J. Ag. Till Alg. Syst. 3: 13. 1882. Rosenvinge, Kgl. Danske 
Vidensk. Selsk. Skrift. VII. 7: 75. 1909. 
Goniotrichum dichotomum Kütz. Tab. Phyc. 3: 7. pl. 27. f. I. 
1853. 
Goniotrichum ceramicola Kütz. loc. cit. pl. 27. f. II. 
Porphyra elegans Crouan, Fl. Finist. 132. pl. ro. f. 73. 1867. 
Goniotrichum elegans Alsidii Zanard. Mem. R. Ist. Ven. 17: 457. 
pi. 064. 1873 
Оп “e Cladophora, etc., dredged іп “272 fathoms,” 
Island of San Lorenzo, region of Callao, February 5, 1907, Coker 50 
Р.Р. The plants аге small, usually 150—350 и long and never, 
* The ce and application of Kiitzing’s generic name Goniotrichum 
has been well discussed by J. Agardh (Till Alg. Syst. 3: 12, 14, 15). It seems to bea 
case in which one may be justified in ignoring the purported “type species” on the 
ground that this species was misinterpreted by Kiitzing and that he really had some- 
thing quite different in mind. И, however, the generic name Goniotrichum is ever 
interpreted according to its alleged “type” and is thus made to supplant the later 
and more clearly defined Erythrotrichia Aresch., the oldest available name for what 
is now known as Goniotrichum would appear to be Diconia Harv. 
