贵州三种黄色山茶花群落的种子植物区系分析

经过对贵州三种黄色的山茶花的群落进行样地调查，分析种子植物的区系，结果为：小黄花茶的群落中出现了46科64属78种种子植物，热带分布的科占43．5％，属占62．4％；贵州金花茶的群落中出现了34科55属72种植物，热带分布的科占50．0％，属占72．6％；离蕊金花茶的群落中出现了24科32属42种植物，热带分布的科占45．8％，属占75．0％。三种黄色山茶花的区系成分都是以热带成分为主，贵州金花茶和离蕊金花茶的群落的区系成分的相似性较高，热带成分明显大于小黄花茶的热带成分。

Study on the Spermatophyte Flora of the Communities of Three Yellow-flower Camellias in Guiahou

Studying on the three yellow-flower camellias found in Guizhou is of great importance. According to plot investigating and analysis, the spermatophyte flora in the com munity of C.luteoflora consisted of 78 species in 64 genera of 46 families, of which tro pical components occupied 43.5% (in families) and 62.4% (in genera)of the total. In the community of C.huana, 72 species in 55 genera of 34 families were found, of which tropical components acc ounted for 50.0% (in families) and 72.6% (in genera). In the community of C.liberofilamenta, 42 species in 32 genera of 24 families were found, of which tropical components accounted for 45.8% (in families) and 75.0% (in genera) of the total. Thus, tropical components constituted the majority of all the three communities. A higher similarity in the flora components was found between the two communities of C.huana and C.liberofilamenta; their tropical components were obviously higher than that of C.luteoflora.