541 
fastigiata, which frequently occur on this substratum (comp. Kürzıng, Phye. gen. 
Taf. 59 II). The only later author who has considered them as tetrasporangia is 
J. AGARDH who on this basis, though with doubt, referred the Alga to the genus 
Rhizophyllis. E. Fries transferred it to the genus Phyllophora', where it has since 
had its place, and with which genus it agrees well in the anatomical structure. 
r— 
Fig. 524. 
A, Phyllophora epiphylla, typical narrow frond from Helsingør. B—E, Ph. epiph. f. Bangü. B, off Gerrild Klint, 7.5 m. 
C, Silderøn south of Læsø, 2—4 m, together with Ahnfeltia plicata f. D, KF south of Læsø, 6.5 m. E, Hofmansgave 
(Caroline Rosenberg), large specimen. °/, nat. size. 
The plant has always been found loose, and reproductive organs have never 
been found. 
During my dredgings in the Danish waters I have met with this Alga in numerous 
localities in the inner waters where the water is comparatively little agitated, on 
sandy bottom, very often in company with Zostera marina, entangled between its 
7 Hauck, Meeresalg. p. 144 cites JENSEN as author of the combination Phyllophora Bangii, owing 
to the fact that he has only known it from Rabenhorst’s Alg. Europ. exsicc. No1299 where TH. JENSEN 
has communicated it with Fries’ name. 
