Rhexoacrodictys melanospora sp. nov. (Rhexoacrodictys, Pleurotheciales) from Yunnan, China Author Bao, Shu-Xin 0000-0002-8223-6556 Yunnan Key Laboratory of Fungal Diversity and Green Development, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand & baosx 016 @ gmail. com; https: // orcid. org / 0000 - 0002 - 8223 - 6556 baosx016@gmail.com Author Xu, Rong-Ju 0000-0002-3968-8442 Yunnan Key Laboratory of Fungal Diversity and Green Development, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China & Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand & School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand & xurongju 1005 @ outlook. com; https: // orcid. org / 0000 - 0002 - 3968 - 8442 xurongju1005@outlook.com Author Zhu, Ying-An 0000-0001-6325-8605 College of Landscape and Horticulture, Yunnan Agricultural University, Kunming, Yunnan 650201, China & zhuyingan 2013 @ 163. com; https: // orcid. org / 0000 - 0001 - 6325 - 8605 Author Zhao, Qi 0000-0001-8169-0573 Yunnan Key Laboratory of Fungal Diversity and Green Development, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China & zhaoqi @ mail. kib. ac. cn; https: // orcid. org / 0000 - 0001 - 8169 - 0573 zhaoqi@mail.kib.ac.cn text Phytotaxa 2023 2023-04-28 594 3 213 222 http://dx.doi.org/10.11646/phytotaxa.594.3.5 journal article 54633 10.11646/phytotaxa.594.3.5 949925e9-1938-4811-ba22-430d1cac6f6f 1179-3163 7901294

TABLE 2. Morphological comparison of Rhexoacrodictys species (on the natural substrate) and distribution.

	Conidiophores	Conidia	Conidial septa	Distribution
Rhexoacrodictys	macronematous,	obovate and	predominantly	U.S.A, Venezuela (Ellis 1961),
erect	up to 65 µm	subspherical,	oblique	Japan, India (Baker et al. 2002),
		24–39 × 15–29 µm		Brazil (Barbosa 2011), China
				(Zhao et al. 2011)
R. fimicola	macronematous,	oval to subglobose	transversely,lon	Sierra Leone (Ellis 1961), Hawaii
	up to 75 µm	or somewhat oblong,	gitudinally and	(Raabe 1981), Malaysia (Whitton
		16–30 × 8–20 µm	obliquely	2000), Jamaica (Baker 2002),
				China (Xia et al. 2017)
R. fuliginosa	macronematous,	obovate,	3–4 transversely	Canada, Japan, New Zealand
	up to 80 µm	17–27 × 11–16 µm	and several	(Baker 2002) China (Zhao et al.
			longitudinally or	2011)
			obliquely
R. broussonetiae	macronematous,	subspherical to	0–2 transverse	China (Xiao et al. 2018),
	70–119 × 4.5–6.5	spherical, 17–28 ×	and several
	µm	19–31 µm	longitudinal and
			oblique septa
R. melanospora	macronematous,	ellipsoidal	2–5 transverse	China (this study)
	19–60 × 3–5 µm	to obovoid	and several
		or somewhat	oblique septate
		subglobose
		16–32 × 12–21 µm