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：

PHYTOTAXA | 2017年 / 296卷 / 02期

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.

引用

页码：171 / 179

页数：9