NO. 56  Paphiopedilum guangdongense
Li-Jun Chen,Zhong-jian Liu,You-Yu LI & Li-Qiang Li 141225..........

中国のGuangdong南部から発見されたPaphiopedilum guangdongense はDNAの塩基配列を比較することによりPaph. villosum やPaph. gratrixianum とその違いが大きいことから新種として Journal of Systematic and Evolution 48(5):350(2010) に記載された。しかし nuclear ribosomal DNAなど理解し難い表示があり、また、写真からいかにもPaph. villosum の変種のように見える。
A new orchid Paphiopedilum guangdongense and its molecular evidence
Li-Jun CHEN 1,2,3Zhong-Jian LIU? 4You-Yu LI 1Li-Qiang LI
1 (Shenzhen Key Laboratory for Orchid Conservation and Utilization, The National Orchid Conservation Center      of China/The Orchid Conservation and Research Center of Shenzhen, Shenzhen 518114, China)
2 (The Center for Biotechnology and BioMedicine, Graduate School at Shenzhen, Tsinghua University, Shenzhen      518055, China)
3 (College of Forestry, South China Agricultural University, Guangzhou 510642, China)
4 (The Nature Reserve of Dawuling of Guangdong Province, Xinyi 525000, Guangdong, China)

A new Paphiopedilum entity found in southern Guangdong was studied taxonomically by means of internal transcribed spacer of nuclear ribosomal DNA analysis in addition to morphological and phytogeographical considerations. This entity is similar to Paphiopedilum gratrixianum (Masters) Rolfe morphologically, from which it differs by having narrower leaves not wider than 2 cm and lacking purple spots toward abaxial base, pale green dorsal sepal veined with pale purplish brown and not heavily spotted with purple, and staminode subtruncate and mucronate at apex. An analysis of internal transcribed spacer sequences of this entity and its allies came to the same conclusion that the entity is a member of Paphiopedilum section Paphiopedilum and closely related to but distinct from P. gratrixianum. As a result, it is treated here as a new species, Paphiopedilum guangdongense Z.J. Liu & L.J.Chen.