TY - JOUR T1 - Cryptocarya kaengkrachanensis, a new species of Lauraceae from Kaeng Krachan National Park, southwest Thailand Y1 - 2020 DO - 10.3897/phytokeys.140.34574 A1 - Zhang, Meng A1 - Yahara, Tetsukazu A1 - Tagane, Shuichiro A1 - Rueangruea, Sukid A1 - Suddee, Somran A1 - Moritsuka, Etsuko A1 - Suyama, Yoshihisa KW - Cryptocarya KW - flora KW - Lauraceae KW - Laurales KW - new species KW - taxonomy KW - Thailand AB -

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.

ER - TY - JOUR T1 - Flora of Bokor National Park V: Two new species of Machilus (Lauraceae), M. bokorensis and M. brevipaniculata JF - Phytokeys Y1 - 2016 DO - 10.3897/phytokeys.65.7403 A1 - Yahara, Tetsukazu A1 - Tagane, Shuichiro A1 - Mase, Keiko A1 - Chhang, Phourin A1 - Toyama, Hironori SP - 35 EP - 46 KW - Bokor National Park KW - Cambodia AB -

Two new species, Machilus bokorensis Yahara & Tagane and M. brevipaniculata Yahara & Tagane (Lauraceae) are described from Bokor National Park, Cambodia with their illustrations and DNA barcodes of the two plastid regions of rbcL and matK and the nuclear region of ITS.

VL - 65 ER -