Alsae. 399 



's= 



Okamura, K., Icones ofjapanese Algae. II. 3. p. 41 — 61. p 1. 

 61-65. (Oct., 1909.) 



The following five species are illustrated in this number: Eu- 

 cheiima spinoswn (L.) J. Ag. , Halyrnenia forniosa Harv. , Polyopes 

 FolyHeoides Okam., Hyalosiphonia caespitosa Okam. n. g. et sp., and 

 Valonia confervoides Harv. 



Hyalosiphonia n. g. {Dumontiaceae). Fronds filiform, cj^lindrical, 

 branching on all sides, at the beginning provided witli a hyaline 

 longitudinal, cylindrical axis, from which infracortical cells verti- 

 ciliately arise longitudinally, the latter b}^ further division giving 

 rise to the cortical laj^er which is composed of a few rows of smal- 

 1er cells arranged in an anticlinal manner. In older portion, infra- 

 cortical cells now abundantly formed, grow up into elongated 

 hyaline cells of wider and narrower calibres taking the appearence 

 of cylindrical cells and rhizoidal filaments and the central axis 

 becomes indistinct being mixed up with them. Apical cells are 

 horizontally articulated. — Tetrasporangia scattered, irregnlarly 

 cruciate. Carpogonical branches and auxiliary-cell-branches are pro- 

 duced in number, being formed as lateral branches of infra cortical 

 cells. Cystocarps prominent, minute, globular with closed pericarp; 

 Gonimoblast spherical faintly lobed, almost all articulations of spore- 

 filaments being transformed to spores. — Closely related to Crypto- 

 siphonin, from which however it differs in the characters of the cen- 

 tral axis and cystocarps. Okamura. 



Okamura, K„ Icones ofjapanese Algae. II. 4. p. 63—76. pl. 

 66 — 70. (Dec, 1909.) 



This no. gives the füll illustrations of the following two genera 

 and five species: Carpopeltis, rigida (Harv.) Schmitz, C. angiista 

 (Harv.) Okam. (= Gymnogongnis ligiilatus var. angustus Harv. =: 

 Prionitis angiista (Harv.) Okam ), C. articnlata Okam. f= P. articiilata 

 Okam.), C. elata Okam. (= P. elata Okam.), and P. patens Okam. 



Okamura. 



Okamura, K., Icones ofjapanese Algae. IL 5. p. 7 7 — 8 7. pl, 

 7 1—75. (May, 1910). 



The illustrations of the following four species are found in this 

 number: Cryptonetnia Schmit3ia)ia Okam. (=: Prionitis Schmitsiana 

 Okam.), Desniarestia ligulata (Lightf.) Lamour., D. viridis (Muell.) 

 Lamour. and D. latifrons (Rupr.?) Kuetz. Okamura. 



Okamura, K., Icones ofjapanese Algae. II. 6. p. 89 — 108. pl. 

 76 — 80. (No/., 1910.) 



^ The five plates of this number illustrate the following plants: 

 Chanipia parvula (Ag.) J. Ag., Constantinea rosa-rnarina (Gmelin) 

 Post et Rupr., Dasyopsis plnniosa (Bril. et Harv.) Schmitz., Canipy- 

 laephora Hypnaeöides J. Ag., Cladophora rugulosa Mart. and Micro- 

 dictyon pseiidohapteron A. et E. S. Gepp. Okamura. 



Okamura, K., Icones ofjapanese Algae. II. 7. p. 109 — 125. 

 pl. 81—85. (Dec. 1910) 



For the illustrations of the following four algae are given the 



