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Impatiens tanintharyiensis (Balsaminaceae), a new species from Southern Myanmar
被引:9
|作者:
Ruchisansakun, Saroj
[1
,2
]
Suksathan, Piyakaset
[3
]
Van der Niet, Timotheus
[1
,4
]
Saw-Lwin
[5
]
Janssens, Steven B.
[6
]
机构:
[1] Naturalis Biodivers Ctr, POB 9517, NL-2300 RA Leiden, Netherlands
[2] Leiden Univ, POB 9517, NL-2300 RA Leiden, Netherlands
[3] Queen Sirikit Bot Garden, Garden Dept, POB 7, Chiang Mai 50180, Thailand
[4] Univ KwaZulu Natal, Sch Life Sci, P Bag X01, ZA-3209 Scottsville, South Africa
[5] Myanmar Floriculturist Assoc, Peoples Sq & Peoples Pk,Ahlone Rd,Dagon Township, Yangon, Myanmar
[6] Botan Garden Meise, Nieuwelaan 38, B-1860 Meise, Belgium
来源:
关键词:
floral asymmetry;
Impatiens;
lithophyte;
Myanmar;
Semeiocardium;
taxonomy;
ARUNACHAL-PRADESH;
INDIA;
SEQUENCES;
INFERENCE;
THAILAND;
CHINA;
D O I:
10.11646/phytotaxa.296.2.6
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Impatiens tanintharyiensis Ruchisansakun, Suksathan & Saw-Lwin from the Tanintharyi region of Southern Myanmar is described and illustrated as a new species. The presence of connate lateral united petals and a four-locular ovary, as well as results of molecular phylogenetic analyses of nuclear ITS and plastid atpB-rbcL spacer DNA sequences, suggest that the new species is a member of Impatiens section Semeiocardium (Zoll.) S.X. Yu & Wei Wang. The new species is morphologically most similar to I. spectabilis Triboun & Suksathan, but can be distinguished by its asymmetric flowers, saccate-bucciniform lower sepal, and shorter, slightly incurved spur. Floral traits, including the presence of a large floral chamber with a wide entrance, are consistent with the bee-pollination syndrome in Impatiens. Since I. tanintharyiensis is only known from two small populations, its conservation status is assessed as Endangered.
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页码:171 / 179
页数:9
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