ISO PLANTS FROM PEITAIHO 



Equisetum ramosissimum, Desf. — Sand flats. — Stems 

 simple or sparingly branched. 



Selaginellaceae. Selaginella Family. 



Selaginella involvens, Spring. — Lotus Hills. — Fronds in 



rosette form. 

 Selaginella caulescens, Spring. — Lotus Hills. — Stems 



3 in. long, fronds 2 in., root stem matted. 

 Selaginella mongolica, Eupr. — Lotus Hills. — Prostrate 



and creeping, moss-like. 



Rhizocarpeae. — Salvia Family. 



Marsilea quadrifolia, L. — Sand flats near pond. — Leaves 

 like " 4-leaved clover. " 



Division 3. — Algae. 



Identified by Prof. Kintaro Okamura of Tokyo Imperial 



University. 



Ulva pertusa, Kjellm. — Frond flat, expanded, green. 

 Ulva ? — Frond flat, lanceolate, wavy at 



margin, green. 

 Enteromorpha ? — Frond tubular, narrow 



green. 

 Leathecia dirformis, (L.) Areach. — Frong globular, 



hollow, green. 

 Codium mucronatum, Harv. — Frond dark green, cylin- 

 drical, branched. 

 Bryopis plumosa, (Huds.) C. Ag. — Composed of many 



branching filaments, dark green. 

 Sargassum fulginosum, Kg. ? — With many berry-like 



growths; color yellow. The common floating form. 

 Sargassum confusum, Ag. ? — Forming leaf-like expan- 

 sions. The largest species seen. 

 Chorda filum, L. — Frond narrow cylindrical, tapering. 



3 ft. 

 Scytosyphdn lomentarius, (Lyngb.) J. Ag. — Fronds 



much smaller, 10 in. ; growing generally in groups of 



few individuals. 

 Chordaria firma, Gepp. — A black, branching, form, 4 



in. ; in rock pools. 

 Chordaria cladsiphon, Ag. — A more slender species, 



lighter in color. Attached to Chorda. 

 Corallina officinaries. L. — The branching pectinate 



form. Encrusted and stony. 

 Khodomela subfusca. C. ,Ag. — A black branching form 



with short linear branchlets. 



