them in the manner of :i <'tis,-/ttn. throwing out rent-like fibres along \)w 

 branches." an<l that tetraspon- an- " genrrally di-po.-rd in longitudinal >»*!»>••:. 

 the outer edge of the branchlet," Again Turner (Fnci, Vol. I. p. 82.) describes 

 that tetraspores arc arranged sometimes in a two- fold series. 1 >ut more com- 

 monly without any order " and that frond puts "forth thronght its whole length 

 extremely minute root- like fibres from its margin, and consequently creeping." 

 These remarks well coincide with the characters of our plant and from these 

 reasons. I refer provisionally the plant in question to 31. glaiuhdosc (ir< \ 



Herpochondria corallinae Falkenb. 



In 1866, von Martens described a new species of HhizophyUis grow- 

 ing on the fronds of some corallina which were collected at Yokohama and 

 called it Ii. coralliwe. Recently Mr. Falkenl>erg (2) referred this alga to the 

 family llhodomclacece, establishing it in a new genus Herpovhoyidri". 

 His materials, however, were distitute of cystocarps, and consequently, it 

 may he doubted, he was led astray from placing it in a right systematic 

 position. I have been fortunate enough to detect ripened cystocarps of this 

 plant, and on the examination of the same, I have found that the cysto- 

 earp has the structure which is characteristic of (!ir<r,,iir><->\e. Thus, this 

 plant is ought not to be placed in Bhodomelaceai but should be jmt in 

 Geratniacece. The plant now may be described as follows: 



Fronds are small, lying flat and adhering to substratum by bundles 

 of monosiphonous root- fibres which are emitted from the under surface. 

 They have thick, fleshy, cartilaginous consistence when old, and are ancipito- 

 linear, with dichotomo-alternate branches. Branches are more or less regularly 

 lobed alternately along both sides, or dilated in a round and fiabellate ex- 

 pansion in free extremities. Lateral shoots grow together in their lower 

 portion with main shoots, so that the flat frond presents a branched midrib 

 in surface view. 



The apical cells of the main and lateral shoots are described by Mr. 

 Falkenl)erg to lie placed in a small notch at the apex of growing extremity, 

 and on this ground he placed Herpochondria in the vicinity of Ghondria. 

 This description, however, is not correct. The apex of shoots is round and 

 emarginate, and in or near the bottom of the notch there are two apical cells 

 on both sides. Certical cells there are converging and inwardly curving, 



« von Martens die Preus. Exped. Tange p. 119, Taf. VJII., Fig. L (18<$6)-De Toui 

 Phyc. Jap. nov. p. 40, (1895). 



