taxonID	type	description	language	source
038087BEFFBD6B0D7BE5FA64C6E8F837.taxon	materials_examined	Type: — JAPAN. Kagoshima Prefecture, Kumage-gun, Yakushima-machi, Yodogou-tozanguchi, 20 July 2005, Nagao & S. Kurogi INM- 2 - 17577 - 055270, acc. nos. LC 656026 / LC 656021, culture MAFF 239964. Additional specimens examined: — JAPAN, immature fruits of S. myrtacea: Fukuoka Prefecture, Onga-gun, Okagakimachi, Kuroyama, 20 June 2001, S. Ogawa TSH-B 0088; Kagoshima Prefecture, Aira-gun, Makizono-cho, Onamiiketozanguchi, 19 July 2005, Nagao & Kurogi INM- 2 - 17564 - 052435, acc. nos. LC 656022 / LC 655200, culture MAFF 239959; Kagoshima Prefecture, Kirishima-shi, Karakuni-dake, 19 July 2005, Nagao & S. Kurogi INM- 2 - 17566 - 055265, acc. nos. LC 656023 / LC 656018, culture MAFF 239960; Kagoshima Prefecture, Kirishima-shi, Karakuni-dake, 19 July 2005, Nagao & S. Kurogi INM- 2 - 17568 - 055268, acc. nos. LC 656024 / LC 656019, culture MAFF 239961; Kagoshima Prefecture, Kumagegun, Yakushima-machi, Yodogou-tozanguchi, 20 July 2005, Nagao & S. Kurogi INM- 2 - 17571 - 052437, acc. nos. LC 656025 / LC 656020, culture MAFF 239963; Kagoshima Prefecture, Kumage-gun, Yakushima-machi, 20 July 2005, Nagao & S. Kurogi INM- 2 - 17582 - 052445.	en	Nagao, Hideyuki, Kurogi, Shuichi, Ogawa, Seiji (2023): Exobasidium siroboe sp. nov. (Exobasidiaceae) causing Exobasidium fruit deformation on Symplocos myrtacea in Japan. Phytotaxa 579 (3): 219-224, DOI: 10.11646/phytotaxa.579.3.7, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.7
038087BEFFBD6B0D7BE5FA64C6E8F837.taxon	diagnosis	Different from E. symploci-japonicae var. caprogenum by narrower basidiospores [(14 –) 15 – 26 × 3 – 6 (– 7) µm] and fewer septal numbers in basidiospores [0 – 3 (– 5)].	en	Nagao, Hideyuki, Kurogi, Shuichi, Ogawa, Seiji (2023): Exobasidium siroboe sp. nov. (Exobasidiaceae) causing Exobasidium fruit deformation on Symplocos myrtacea in Japan. Phytotaxa 579 (3): 219-224, DOI: 10.11646/phytotaxa.579.3.7, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.7
038087BEFFBD6B0D7BE5FA64C6E8F837.taxon	description	The hymenium composed of basidia with 2 – 4 sterigmata and conidia. Basidia were clavate to cylindrical, 35 – 40 × 6 – 7 µm (FIGURES 1 A, B), emerging directly from the host surface or through stomata. Sterigmata were 4 – 8 × 1.5 µm, developing outwardly and tapering toward the tip (FIGURES 1 A, B, 3 A, B). Basidiospores were ellipsoid, (14 –) 15 – 26 × 3 – 6 (– 7) µm, hyaline, smooth, one-celled when formed, becoming septate with 3 (– 5) septa (FIGURES 1 C, 3 C, D, E). Septate basidiospores germinated after placing on culture media for 18 – 24 h (FIGURE 3 F). Germ tubes of the basidiospores emerged from several cells and produced conidia at the tip of germ tubes 24 h after release (FIGURES 2, 3 G). Germ tubes grew into pseudohyphae and branch. Conidia were lacrimiform, subfusiform, and clavulate, 5 – 13 × 1 µm. Colonies on potato dextrose agar (PDA) composed of partially elongated pseudohyphae and conidia. The colony surface corrugate without a farinose appearance and pink to pale pink, the same as the reverse of the colonies. Dark pigment was not produced on PDA. Colonies were glutinous and did not fix on the agar surface.	en	Nagao, Hideyuki, Kurogi, Shuichi, Ogawa, Seiji (2023): Exobasidium siroboe sp. nov. (Exobasidiaceae) causing Exobasidium fruit deformation on Symplocos myrtacea in Japan. Phytotaxa 579 (3): 219-224, DOI: 10.11646/phytotaxa.579.3.7, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.7
038087BEFFBD6B0D7BE5FA64C6E8F837.taxon	etymology	Etymology: — Referring to the local name of the host plant, S. myrtacea, by the Yakushima dialect.	en	Nagao, Hideyuki, Kurogi, Shuichi, Ogawa, Seiji (2023): Exobasidium siroboe sp. nov. (Exobasidiaceae) causing Exobasidium fruit deformation on Symplocos myrtacea in Japan. Phytotaxa 579 (3): 219-224, DOI: 10.11646/phytotaxa.579.3.7, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.7
038087BEFFBD6B0D7BE5FA64C6E8F837.taxon	biology_ecology	Symptom: — On infected fruit of S. myrtacea, white powdery hymenia appeared entirely on the swollen part of the fruit (FIGURE 4 A). Size of the infected fruit was apparently larger than the healthy ones and the color was pale green or whitish green (FIGURES 4 B, C). Infected fruit showed thickened mesocarp and cavities. The symptom was different from the pocket caused by Taphrina species. All seeds were sterile (FIGURE 4 D). Hymenium formation was not observed on leaves, twigs and branches.	en	Nagao, Hideyuki, Kurogi, Shuichi, Ogawa, Seiji (2023): Exobasidium siroboe sp. nov. (Exobasidiaceae) causing Exobasidium fruit deformation on Symplocos myrtacea in Japan. Phytotaxa 579 (3): 219-224, DOI: 10.11646/phytotaxa.579.3.7, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.7
038087BEFFBD6B0D7BE5FA64C6E8F837.taxon	discussion	Phylogenetic analysis: — Bootstrap values on neighbor-joining and support values of Quartet Puzzling on maximum likelihood trees were highly supported (100 / 100), so that this new species is distinguished from the two previously described varieties of E. symploci-japonicae.	en	Nagao, Hideyuki, Kurogi, Shuichi, Ogawa, Seiji (2023): Exobasidium siroboe sp. nov. (Exobasidiaceae) causing Exobasidium fruit deformation on Symplocos myrtacea in Japan. Phytotaxa 579 (3): 219-224, DOI: 10.11646/phytotaxa.579.3.7, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.7
