中国丽藻属两新种

TWO NEW SPECIES OF NITELLA FROM CHINA

本文报道的是采自广西、山东的丽藻属植物两新种,即广西丽藻(Nitella guangxiensis)和山东丽藻(Nitella shandongensis),其特征分别描述如下: 广西丽藻新种图1:1-9 Nitella guangxiensis Y. J. Ling, G. Z. Deng et Z. Li, sp. nov. Planta monoica, claro-viridis, 13-19 cm alta. Caulis robustus,diametro 610-

Two new species, Nitella guangxiensis collected from Guangxi Province and Nitella shandongensis collected from Shandong Province, are reported in this paper. Nitella guangxiensis has much resemblance to N. acuminata and N. flexilis var. subcapitata. It differs from the latter two in having bifid or cusp dactyls. N. bicornuta, N. partita, N. inaequipartita and N. caroliniana also have bifid or cusp dactyls, but they belong to Arthrodactylae and differ from Nitella guangxiensis which belongs to Anarthrodactylae. Nitella shandongensis is very similar to N. shinii, N. hokouensis, N. minispora and N. horkawae. It is distinguished from the former two by its absence of gametangia at the first node of the branchlets. It is different from the latter two in having reticulate oospore membrane.