Phylogeny and morphology of Phillipsia hydei sp. nov. (Sarcoscyphaceae) from Thailand Author Zeng, Ming Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand Author Ekanayaka, Anusha H. Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand Author Zhao, Qi Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China text Phytotaxa 2019 2019-03-12 395 4 277 286 http://dx.doi.org/10.11646/phytotaxa.395.4.3 journal article 10.11646/phytotaxa.395.4.3 1179-3163 13717747 Phillipsia hydei M. Zeng & Q. Zhao , sp. nov. Figs. 2 , 3 Index Fungorum number: IF 555284; Facesoffungi number: FoF 04823. Etymology: The epithet in honor of Kevin D. Hyde for his contributions to mycology. Holotype : MFLU 18-0714 . Saprobic on dead wood. Sexual morph: Ascomata 0.5−2 mm high, 5−12 mm broad, superficial, scattered, sessile. Receptacle discoid, concave, reddish to red, margin conspicuous when fresh, involute, hymenium reddish, receptacle surface yellowish to orange or reddish, wrinkled when dry. Medullary excipulum 90−150 μm broad, of textura intricata , hyaline, composed of 3−4 μm broad hyphae. Ectal excipulum 47−73 μm broad, of textura porrecta , hyaline, composed of 2−4 μm broad hyphae, J-. Paraphyses 2−3 μm broad at the middle, filiform, exceeding the asci sightly, reddish contents, septate, branched, J-. Asci 166−200 × 8.5−12 μm, 8-spored, operculate, subcylindrical, stipitate, J-. Ascospores [20/1/1, in H 2 O] (17.2–)18−20(–21) ×(9.6–)9.8−10.4(–10.6) (Q = 1.72−2.20, Q = 1.86±0.12), ellipsoid with rounded ends, uniseriate, inequilateral, inamyloid, uniguttulate or biguttulate, very faint striations, with gelatinous sheath in 5% KOH. Asexual morph: Unknown. Material examined :— THAILAND , Ranong , on unidentified dead wood, 5 October 2017 ; M. Zeng , ST05 ( MFLU 18-0714 , holotype ) ; ibid. ( HKAS 97492 , isotype ) ; THAILAND , Ron Thong , Prachuap Khiri Khan , on unidentified dead wood, 28 August 2017 ; C.G. Lin , 1-2 ( MFLU 18-1329 , HKAS 97489 ) ; ibid. 1-3 ( MFLU 18-0712 , HKAS 97490 ) . Note: This species is characterized by red, sessile apothecia, reddish paraphyses and ornamented ascospores with gelatinous sheath. Phylogenetic results show a close relationship between P. hydei and P. carnicolor . But there are three major morphological differences between these two species: 1). Colors of apothecia: P. hydei has red apothecia ( FIG. 2 ), but the apothecia of P. carnicolor shows distinct orange color ( FIG. 4 ). 2). Shape of apothecia: P. hydei has sessile discoid apothecia ( FIG. 2 , h) and P. carnicolor has short stalked ( FIG. 4 , c), cupulate to irregular apothecia. 3). Colors of paraphyses: within the genus Phillipsia , content of paraphyses is a very important feature to identify ( Hansen et al. 1999 ). We observed reddish paraphyses in P. hydei and yellowish paraphyses in P. carnicolor respectively.