02086nas a2200253 4500008004100000245011500041210006900156520131900225653001601544653001001560653001401570653001301584653001601597653001301613653001301626100001601639700002201655700002201677700002201699700001901721700002201740700002201762856004801784 2020 eng d00aCryptocarya kaengkrachanensis, a new species of Lauraceae from Kaeng Krachan National Park, southwest Thailand0 aCryptocarya kaengkrachanensis a new species of Lauraceae from Ka3 a

A new species of Lauraceae, Cryptocarya kaengkrachanensis M.Z. Zhang, Yahara & Tagane, from Kaeng Krachan National Park, Phetchaburi Province, southwestern Thailand, is described and illustrated. This species is morphologically most similar to C. amygdalina in that its leaves are pinnately veined, leathery, and apparently glabrous (but microscopically hairy) abaxially, twigs are yellowish brown hairy, and fruits are 1.36 to 1.85 times longer than width. However, C. kaengkrachanensis is distinguished from C. amygdalina in having the leaves of ovate and elliptic (vs. oblong-lanceolate) with leaf aspect ratio (length:width) from 1.38 to 2.28 (vs. 2.46–3.43), and ovoid fruits (vs. ellipsoid) with stalk distinctly swollen (vs. not or only slightly swollen). In addition, phylogenetic trees constructed based on internal transcribed spacer sequences (ITS) and genome-wide SNPs using MIG-seq showed that C. kaengkrachanensis is not sister to C. amygdalina and is distinct from all the other Cryptocarya species hitherto recognized in Thailand. Analysis including other species demonstrates that C. floribunda should be a synonym of C. amygdalina, but we recognize C. scortechinii as a distinct species.

10aCryptocarya10aflora10aLauraceae10aLaurales10anew species10ataxonomy10aThailand1 aZhang, Meng1 aYahara, Tetsukazu1 aTagane, Shuichiro1 aRueangruea, Sukid1 aSuddee, Somran1 aMoritsuka, Etsuko1 aSuyama, Yoshihisa uhttps://lauraceae.myspecies.info/node/20413