【摘要】 于1982—1988年在辽宁省大连沿海黑石礁等地采到标本50余株,经自然环境及室内的培养观察及分类研究表明,标本系褐壳藻属Ralfsia Berkely, 1831的一新种,定名为黄海褐壳藻Ralfsia huanghaiensis nov. sp.。模式标本保存于大连水产学院海藻标本室。更多还原

【Abstract】 A new species Ralfsia huanghaiensis nov. sp. was identified from specimens collected by the authors in November, 1982 and 1982-1988 from Heishijiao, Shimiao, Changshan Islands, Lu-shun and Jinshou,, in the Dalian region. Holotypes are deposited in the Dalian Fisheries College Herbarium.Ralfsia huanghaiensis nov. sp. (Fig.1-Fig.3)Thalli, yellow brownish in color, coriaceous, crustaceous, adhere loosely to midtidal rocks and radially branched dichotomous or trichotomus divisions, about 1.2-2.0 cm wide and 0.6-1.0 mm thick when matured. Thalli composed of two layers; the basal layers with horizontally extended cells possessing assurgent filaments and downwardly directed filaments which give rise to rhizoids, the upper layers with 3-6 cells, densely arranged in rows. Unilocular sporangia rather large, elongate cylindrical in shape, 100-110 μm in length, 24-28 μm in diameter, with a basal stalk cell. Lateral filaments clavate,, composed of 8-10 cell, 200-208 μm in length, 10-13 μm in diameter. Plurilocular sporangia with uniserially arranged 5-6 cells and one sterile terminal cell per series, is not accompanied by paraphyses. Both of them are formed in the upper layer of the thalli.Holotype, 8211 (Sporophyte) at Heishijiao of Dalian region, 15, November, 1982.更多还原