A new orchid Paphiopedilum guangdongense and its molecular evidence
1Li-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)
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Abstract
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.
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