Gamblea innovans (Sieb. & Zucc.) C .- B . Shang, Lowry & Frodin, 2000

Shang, C. - B., Lowry Ii, Porter P. & Frodin, David G., 2000, A taxonomic revision and re-definition of the genus Gamblea (Araliaceae), Adansonia (3) 22 (1), pp. 45-55 : 52-53

2. Gamblea innovans (Sieb. & Zucc.) C.- B. Shang, Lowry & Frodin , comb. nov.

Panax innovans Sieb. & Zucc., Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4: 198 (1845). — Kalopanax innovans (Sieb. & Zucc.) Miq., Ann. Mus. Bot. Lugduno-Batavum 1: 17 (1863). — Evodiopanax innovans (Sieb. & Zucc.) Nakai, J. Arnold Arbor. 5: 8 (1924); Ohwi, Fl. Jap.: 835 (1953); C.- B. Shang & J.- Y. Huang, J. Nanjing For. Univ. 17: 34 (1993).

— Lectotype: Buerger s.n., Japan ( L; iso-, K!).

Small trees. Leaves (1-2-)3-foliolate, central leaflet rhomboid to slightly trullate, (6.5-)8-15.5 × (3-) 4.5-6.5 cm at maturity, 1.2-1.8(-2.5) times as long as wide, with 3-4(-5) secondary veins on each side of midvein, domatia prominent on abaxial surface at base of secondary veins, (1-) 1.5- 3 mm in diam., tertiary veins weakly raised on abaxial surface, margins minutely serrulate, the teeth ca. 1-2 mm apart, each with a ciliate-hispid appendage ca. 0.2-0.5 mm long, oriented toward the apex of the leaflet. Inflorescence a panicle of 2-8 umbellules borne on a single axis, 8-15 cm long at anthesis and in fruit, occasionally paired with a second shorter, unbranched axis terminating in a single umbellule; calyx a narrow rim, without evident teeth; styles 2, united for 1/2-2/3 of their length. Fruit ellipsoid to subglobose, (3.5-)4-6 × 4.5-5 mm, disk ca. 1-1.5 mm in diam., with a thick, entire, often undulate rim.

Gamblea innovans is restricted to Japan, where it occurs on Shikoku, Kyushu, the southern peninsula of Hokkaido, and across Honshu, ranging from near sea level to ca. 600 m elevation. It favors dry sites such as ridges, and can be distinguished from other members of the genus by its generally rhomboid central leaflets that are rarely more than twice as long as wide, its prominent domatia at the base of the secondary veins on the abaxial surface, and its paniculate inflorescences usually with a single axis bearing 2-8 umbellules.

MATERIAL EXAMINED. — JAPAN: Hokkaido Pref., Hakodate, Maximowicz s.n., fl., fr. ( K, P). Miyagi Pref., Boufford et al. 25407, Yoogai, S side of Okinakurayama, Mono-gun, Kitakami-machi, 38°36’N, 141°22’E, 80 m, 1 June 1990, fl. (MO); Y. Tateishi & T. Kurosawa 15309, Bot. Gard. Tohoku Univ., Aobayama, Sendai-shi, 38°14-15’N, 140°50-51’ E, 60- 145 m, 12 July 1990, fr. (MO); Y. Tateishi et al. 15623, same locality, 6 May 1991, bud (MO); K. Yonekura 1054, Kunimi-5-chome, Aoba-ku, Sendai-shi, 38°16’10-20’’N, 140°50’10-20’’ E, 140-150 m, 13 June 1993, y.fr. (MO). Yamagata Pref., M. Ito 395, Marumori-one, Oguni-cho, Nishoikitama-gun, Iide Mts., 1400 m, 14 June 1978, ster. (MO). Niigata Prof., T. Yamazaki 9804, Zaezan, Arakawa-machi, Iwafune-gun, 400 m, 20 July 1965, fr. ( K). Tochigi Pref., H. Ohashi et al. 11829, Mt. Kogashi, Utsunomiya-shi, 400-580 m, 28 May 1982, fl. (MO); H. Takeda s.n., Nikko, 14 Oct. 1904, fr. ( K). Shiga Pref., Boufford & H. Koyama 23550, Hata, Adogawacho, Takashima-gun, N end of Hira Mountain Range, 350-500 m, 20 Sep. 1984, fr. (MO). Kyoto Pref., J. Ohwi 9070, Kyoto, 12 Sep. 1936, fr. ( K); T. Takahashi 475, Kami-ike, Ikeziri, Umazi-cho, Kameoka-shi, 100 m, 23 Sep. 1987, fr. (MO), 1996, Kamiyada-cho, Kameoka-shi, 160 m, 11 Aug. 1991, fr. (MO); T. Takahashi & M. Sawada 1905, Mt. Kono-yama, Yunohara, Nishibetsuin-cho, Kameoka-shi, 440 m, 27 June 1991, fr. (MO); M. Togashi s.n., Hozukyo, Ukyoku, Kyoto-shi, 100 m, 15 Oct. 1965, fr. ( K, MO, NY); S. Tsugaru & T. Takahashi 14823, Mt. Kunimi-yama, Ohnyu, Nishioura, Maizuru-shi, 80 m, 26 July 1991, fr. (MO), S. Tsugaru 14957, Yunohara, Nishibetsuincho, Kameoka-shi, 440 m, 4 Aug. 1991, fr. (MO); Wood & Boufford 3678, Kyoto City, Sakyo-ku, Yoshida-yama, 13 May 1977, fl. (MO). Kochi Pref., K. Watanabe s.n., Niida, 17 Aug. 1892, fr. ( K [2 sheets]); Faurie 6234, without precise locality, 1904, fr. (P), 7872, 4 May 1892, ster. ( K); E.H. Wilson 6998, Honshu (as “Hondo”), without precise locality, 10 June 1914, fl. ( K). Without precise locality, Buerger s.n. ( K).