A new species of Paraboea and a new species record of Middletonia (Gesneriaceae) from a limestone karst of Central Laos
DOI:
https://doi.org/10.20531/tfb.2021.49.1.17Keywords:
Angiosperms, flora of Laos, limestone flora, taxonomyAbstract
A new species of Paraboea (Gesneriaceae), P. khotamiae, from a limestone karst in central Laos, is described and illustrated. The species resembles Paraboea bintangensis, P. prazeri and P. robusta, but differs in leaf shape and floral features, especially corolla shape and size, the interior of the corolla tube, and capsule characters. In addition, we report the occurrence of Middletonia reticulata (Gesneriaceae) for the flora of Laos for the first time.
Downloads
References
Barnett, E.C. (1961). Contributions to the Flora of Thailand: LV. Kew Bulletin 15: 249–259.
Burtt, B.L. (1984). Studies in the Gesneriaceae of the Old World: XLVII. Revised generic concepts for Boea and its allies. Notes from the Royal Botanic Garden, Edinburgh 41: 401–452.
Guo, Z., Wu, Z., Xu, W., Li, Z. & Xiang, X. (2020). Paraboea dolomitica (Gesneriaceae), a new species from Guizhou, China. PhytoKeys 153: 37–48.
He, D.M., Feng, Y.F., Pan, F.Z., Hong, X. & Wen, F. (2018). Paraboea wenshanensis, a new species of Gesneriaceae from Yunnan, China. PhytoKeys 95: 83–91.
IUCN (2019). Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Downloadable from http://www.iucnredlist.org/documents/RedListGuidelines.pdf. [Accessed 4 Sep 2020]
Lu, Z.C., Liu, E.D., Han, M.Q., Zhu, X.X., Nguyen, K.S. & Xu, W.B. (2019). Discovery of Paraboea minutiflora (Gesneriaceae) from southeastern Yunnan, China with supplementary description. Guihaia (online) DOI:10.11931/guihaia.gxzw201909027
Middleton, D.J. (2018). Two new species of Paraboea (Gesneriaceae) from Vietnam. Edinburgh Journal of Botany 75(3): 421–425.
Newman, M.F., Pullan, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2017–, continuously updated). A checklist of the vascular plants of Lao PDR. Online database available at https://padme.rbge.org.uk/laos/.
Puglisi, C. & Middleton, D.J. (2017). A revision of Middletonia (Gesneriaceae) in Thailand. Thai Forest Bulletin (Botany) 45(1): 35–41.
Puglisi, C. & Phutthai, T. (2018). A new species of Paraboea (Gesneriaceae) from Thailand. Edinburgh Journal of Botany 75(1): 51–54.
Puglisi, C., Middleton, D.J., Triboun, P. & Möller, M. (2011). New insights into the relationships between Paraboea, Trisepalum, and Phylloboea (Gesneriaceae) and their taxonomic consequences. Taxon 60(6): 1693–1702.
Puglisi, C., Suddee, S., Triboun, P. & Middleton, D.J. (2015). A new species of Paraboea (Gesneriaceae) from Thailand. Gardens’ Bulletin Singapore 67: 101–106.
Puglisi, C., Yao, T.L., Milne, R., Moller, M. & Middleton, D.J. (2016). Generic recircumscription in the Loxocarpinae (Gesneriaceae), as inferred by phylogenetic and morphological data. Taxon 65 (2): 277–292.
Souvannakhoummane, K. & Phonepaseuth, P. (2020). Didymocarpus albiflorus (Gesneriaceae), a new species from Vientiane capital, Lao PDR. Taiwania 65(2): 109‒113.
Souvannakhoummane, K., Souladeth, P., Tagane, S., Yang, C.-J. & Yahara, T. (2019). Flora of Nam Kading National Protected Area VI: Didymocarpus middletonii (Gesneriaceae), a new species from limestone. Edinburgh Journal of Botany 76(1): 45–54.
Triboun, P. (2013). Paraboea middletonii (Gesneriaceae), a new species from Thailand. Thai Forest Bulletin (Botany) 41: 45–47.
Triboun, P. & Middleton, D.J. (2012). Twenty new species of Paraboea (Gesneriaceae) from Thailand. Gardens’ Bulletin Singapore 64: 333–370.
Triboun, P. & Middleton, D.J. (2015). Three new species of Paraboea (Gesneriaceae) from Thailand. Thai Forest Bulletin (Botany) 43: 18–23.
Xu, Z., Burtt, B.L., Skog, L.E. & Middleton, D.J. (2008). A revision of Paraboea (Gesneriaceae). Edinburgh Journal of Botany 65: 161–347.
Xu, W.B., Guo, J., Pan, B., Zhang, Q. & Liu, Y. (2017). Diversity and distribution of Gesneriaceae in China. Guihaia 37(10): 1219–1226.
