A new species of Styrax series Cyrta (Styracaceae) from Cambodia
Keywords:Cambodia, endemic, new species, Styrax
Styrax cambodianus, a new species of Styrax L. ser. Cyrta (Lour.) P.W. Fritsch from Virachay National Park in northeastern Cambodia, is described and illustrated. It is similar to S. hookeri C.B. Clarke but differs by its two most proximal leaves alternate, abaxial surfaces with mostly planar or occasionally slightly raised quaternary veins, rotate corollas, and stamen filaments strongly flexuous in the upper half. Styrax cambodianus is known only from the type and is the only species of the series unequivocally documented from Cambodia. The discovery of this species brings the number of Styrax ser. Cyrta to 31.
Fritsch, P.W. 1999. Phylogeny of Styrax based on morphological characters, with implications for biogeography and infrageneric classification. Syst. Bot. 24:355–378. doi:10.2307/2419695
Huang, Y., P.W. Fritsch, & S. Shi. 2003. A revision of the imbricate group of Styrax series Cyrta (Styracaceae) in Asia. Ann. Missouri Bot. Gard. 90:491–553. doi:10.2307/3298541
IUCN Standa rds and Petitions Subcommittee. 2019. Guidelines for using the IUCN Red List categories and criteria, ver. 14. Available at http://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf. Accessed Aug 2020.
Li, G. & P.W. Fritsch. 2018. A taxonomic revision of taxa in Styrax series Cyrta (Styracaceae) with valvate corollas. J. Bot. Res. Inst. Texas 12:579–641. Stable URL: https://www.jstor.org/stable/26549488
Xu, W.-B., P. Yang, Y.-S. Huang, R. Zhang, & M. Tang. In press. Styrax hwangiae (Styracaceae), a new species endemic to limestone areas of Guangxi, China. Phytotaxa.
Zhou, H., W. Yang, M. Li, & X.-L. Yu. 2015. Styrax rhytidocarpus (Styracaceae), a new species from Hunan, China. Phytotaxa 230(1):87–91. doi:10.11646/phytotaxa.230.1.9