Population Characteristics of Some Rare and Endangered Plants in North and Northeast of Guangdong Province, China Two Newly Recorded Species of Impatiens (Balsaminaceae) from Yunnan Province,China Paraisometrum W.T.Wang, a newly recorded genus of Gesneriaceae from Guangxi, China Stenochlaenaceae, a new recorded family of ferns from Guangxi Habenaria chlorina, a Newly Recorded Species of Orchidaceae from China(英文稿) Caobangia A. R. Smith & X. C. Zhang (Polypodiaceae), a newly recorded fern genus from China Two Newly Record Genera in Shandong Province,China Isodon atroruber (Lamiaceae):A Newly Recorded Species from China Five Newly Recorded Species of Gomphonema (Bacillariophyta) from China New records of the exotic seed plants discovered in Guangxi, China Diospyros brandisiana Kurz (Ebenaceae), A Newly Recorded Species from China Zeuxinella, A Newly Recorded Genus of Orchidaceae from China The Genus Herminium Guett. (Orchidaceae) in China Preliminary Study of Hyophila (Musci, Pottiaceae)in Henan Province, China Phalaenopsis--a Newly Recorded Genus of Orchidaceae in Qinling Ranges Newly Recorded Plants in Hunan Province Impatiens alpicola Y.L.Chen et Y.Q.Lu(Balsaminaceae),A Newly Recorded Species from Chongqing Ribes pulchellum,a Newly Recorded Plant of the Genus Ribes from Shandong A Taxonomic Revision of the Dipteridaceae from Yunnan, China