taxonID	type	description	language	source
411BBEFB9EE25E8CB77B4BE91785EDD3.taxon	materials_examined	Type. Japan, Higo Province, Kyushu (L 0043373, the lectotype designated by Ohba and Akiyama (2013)).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
BCC0D24640B75EC897ED65667967F831.taxon	distribution	Distribution and habitats. Hydrangea acuminata subsp. acuminata is widely distributed on the main island of Kyushu, and usually grows on the soil near streams and often on cliffs, and sometimes in disturbed habitats.	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
FDC82B887F8B527C8605FE9A93FBA366.taxon	distribution	Distribution and habitats. Hydrangea acuminata subsp. australis is widely distributed at lower elevations in the Kagoshima Prefecture and the southern part of the Miyazaki Prefecture of the Kyushu Island and usually grows in disturbed places along the margins of evergreen forests or Cryptomeria plantations. JPN 0908 was collected on a volcanic cliff at 1700 m elevation on Mt. Karakuni and was identified as Hydrangea acuminata subsp. australis in the MIG-seq tree (Fig. 2).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
FDC82B887F8B527C8605FE9A93FBA366.taxon	materials_examined	Representative specimens examined. Japan. Kagoshima Pref.: Kagoshima City, 22 July 2002, with flowers, K. Maruno s. n. (KAG 083840!); Shibushi City, 4 June 2002, with fruits, K. Maruno s. n. (KAG 083882!); Aira City, 11 July 2004, K. Maruno s. n. (KAG 086731!); Kimotsuki Town, 300 m elevation, 20 July 1986, with fruits, S. Hatusima 41199 (KAG 161312!); KHydrangeahima City, 450 m elevation, 22 November 1986, with fruits, S. Hatusima 41920 (KAG 161315!); Mt. Nokubi, 700 m elevation, 12 July 1987, with flowers, S. Hatusima 42447 (KAG 161327!).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	description	Figures 4, 5	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	diagnosis	Diagnosis. Hydrangea acuminata subsp. yakushimensis is different from Hydrangea acuminata subsp. acuminata in that it has smaller capsules, 2.2 - 2.7 mm long with calyx tube 1.2 - 1.4 mm long and projected apical part including persistent style 1.0 - 1.3 mm (vs. capsules 3.2 - 5.1 mm long with calyx tube 1.6 - 3.4 mm and projected apical part including persistent style 1.5 - 2.0 mm), a larger infructescence attaining to 7 x 12 cm (vs. attaining to 6.3 x 8.7 cm), leaves glabrous adaxially except veins (vs. hairy) and glabrous or only slightly hairy abaxially except for tufted hairs at axils of lateral veins (vs. hairy overall on abaxial surface).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	materials_examined	Type. Japan. Kagoshima Pref.: Yakushima Migitani, on cliff along stream, 30.34255555 ° N, 130.48100000 ° E, 1520 m elevation, 9 September 2020, with fruits, K. Fuse JPN 1799 (holotype: KYO!).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	description	Description. Shrubs 1 - 1.5 m tall. First year's twigs green when fresh, with dark purple lenticels, glabrous, terete. Old twigs pale brown; bark not peeled off. Leaves opposite; petioles purplish green, 1.7 - 3 cm long, glabrous; leaf blade adaxially green, abaxially light green when fresh, pale green when dried, elliptic, 9 - 12 x 4.6 - 6.4 cm, papery, adaxially glabrous except veins which are covered with minute hairs, abaxially glabrous or only sparsely hairy except for tufted hairs at axils of lateral veins, secondary veins 6 - 9 on each side of midvein, adaxially slightly sunken, abaxially slightly elevated, base broadly cuneate, apex long acuminate, margin serrate, teeth 2 - 3 mm high, 13 - 31 along each side of the margin. Inflorescences corymbose cymes, 2 - 7 cm long, 4 - 12 cm in diam., densely pubescent, apex flat to slightly arcuate, 3 - 5 - branched; the longest internode of each branch 1.5 - 2.5 cm long, densely pubescent; infructescence attaining to 7 x 12 cm. Marginal showy flowers light blue, on pedicel 1 - 2 cm long; sepals 3 to 5, rhomboid-elliptic, 0.8 - 1.4 x 0.5 - 1.1 cm, glabrous, apex obtuse, base rounded to cuneate, margin entire. Fertile flowers protandrous, light blue. Male-stage flowers on pedicel 1 - 1.8 mm long; calyx tube funnel-shaped, ca. 1 mm long, 0.8 mm in diam., lobes 5, triangular, 0.5 x 0.4 mm, apex acute; petals 5, light blue, elliptic, 2 - 2.2 x 1 mm, glabrous, apex acute; stamens 10, light blue, subequal, filaments 1.5 - 3 mm long, glabrous, anthers white, globular, 0.6 mm in diam.; ovary nearly 1 / 2 superior, style 3, connate at base, slightly spreading, dark blue, ca. 0.7 mm long, stigma flat. In female-stage flowers, petals and stamens fallen off; ovary nearly 1 / 2 superior; calyx tube light blue, ca. 1 mm long; style darker blue, spreading, ca. 1 mm long; capsules 2.2 - 2.7 mm long; calyx tube subglobose, 1.2 - 1.4 mm long, 1.5 - 2 mm in diam., projected apical part including persistent styles 1.5 mm long. Seeds light brown, elliptic, 0.8 x 0.5 mm, not winged.	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	distribution	Distribution and habitat. Yakushima (Yaku Island), Japan (endemic). The distribution of H. acuminata subsp. yakushimensis is restricted to cliffs along streams at Yakushima. It mainly grows in the mountain-top area from 1520 to 1750 m, but one population occurs at an elevation of 575 m, along the Miyanoura River.	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	etymology	Etymology. The specific epithet is derived from the type locality, Yakushima.	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
50E676C16C275E8EA006CCED6D6C685B.taxon	materials_examined	Additional specimens examined. Japan. Kagoshima Pref., Yakushima: Mt. Nagata, on cliff, 30.343799 ° N, 130.492056 ° E, 1750 m elevation, 2 August 2005, with flowers, T. Yahara, S. Tagane, K. Fuse & T. Saito 0791 (FU!); Kamisamano-kubo, on cliff, 30.343799 ° N, 130.492056 ° E, 1750 m elevation, 2 August 2005, with flowers, T. Yahara, S. Tagane, K. Fuse & T. Saito 0792 (FU!); ditto, with flowers, T. Yahara, S. Tagane, K. Fuse, T. Saito 0793 (FU!); Nemachino-kubo, on cliff, 30.345465 ° N, 130.49468230 ° E, 1740 m elevation, 12 July 2006, sterile, S. Tagane & K. Fuse 1065 (FU!); Migitani, on cliff along stream, 30.34255555 ° N, 130.48100000 ° E, 1520 m elevation, 13 July 2006, with flowers, S. Tagane & K. Fuse 1103, 1104, 1105 (FU!); Sensuikyo, 30.372031 ° N, 130.504266 ° E, 575 m elevation, 31 August 2020, sterile, K. Fuse JPN 1708 (FU!).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
5B1A099D8CB05B989D425868BF71F518.taxon	materials_examined	Additional specimens examined. Japan. Miyazaki Pref.: Mt. Osuzu, 500 m elevation, 20 October 1960, with fruits, S. Sako 3285 (KAG 161375!); ditto, 500 m elevation, 28 July 1971, with flowers, S. Hatusima & S. Sako 32643 (KAG 161376!); ditto, 11 July 1976, with flowers, T. Minamitani 22630 (KAG 161378!); Aya Town, 73 m elevation, 24 October 2019, with fruits, S. Tagane 1200 (KAG 128616!).	en	Hirota, Shun K., Yahara, Tetsukazu, Fuse, Kengo, Sato, Hiroyuki, Tagane, Shuichiro, Fujii, Shinji, Minamitani, Tadashi, Suyama, Yoshihisa (2022): Molecular phylogeny and taxonomy of the Hydrangea serrata complex (Hydrangeaceae) in western Japan, including a new subspecies of H. acuminata from Yakushima. PhytoKeys 188: 49-71, DOI: http://dx.doi.org/10.3897/phytokeys.188.64259, URL: http://dx.doi.org/10.3897/phytokeys.188.64259
