Platypholis boninsimae
Platypholis boninsimae MAXIMOWICZ, Bull. Acad. St. Petersburg 30: 88. 1886
Synonyms:
- Platypholis boninsimae (MAXIM.) TUYAMA, Bot. Mag. 51 (605): 280. 1937, descr. ampl.
- Orobanche boninsimae (MAXIM.) TUYAMA, Sigenkagaku-Ken-Kyusho-Iho no. 10: 18. 1946; HARA, Enum. Spermat. Jap. Pt. 1: 287. 1948; YAMAZAKI in IWATSUKI et al., Fl. Jap. IIIa: 382. 1993
Vernacular names:
- Sima-utsubo [jap.] (Matsumura, Shokubutsu Mei-i 221. 1895)
- Ogasawara-oniku [jap.] (orig. van.)
- Take-utubo [jap.] (ex Kawate 03.1906)
Description: - Parasitic perennial herbs 15-25 cm high, yellow throughout. Underground stems thickened, simple or several branched, clothed with scale-like leaves. Aerial stems terete, densely pubescent. Leaves ovate or oblong-ovate, obtuse to acute, involute, 15-18 mm long, 7-12 mm wide, pubescent outside. Flowers twice each year, March to April and September to October. Inflorescence a terminal spike, 3-15 cm long, 3-4 cm across, densely many-flowered. Bracts scale-like, oblong-ovate, acute, 1.5-2 cm long, pubescent outside. Calyx lobes 2, lateral, oblong-ovate, bilobed, 15-18 mm long, 5-6 mm wide, segments linear-lanceolate, acuminate, pilose on margin. Corolla yellow, bilabiate, 2-2.5 cm long, pubescent outside, tube 15-18 mm long, 7-8 mm across, more or less ampliate, slightly incurved, upper lip widely ovate, involved, 5-6 mm long, shallowly bilobed, lower lip 3-4 mm long, deeply 3-lobed, lobes linear, obtuse. Stamens 4, 15-20 mm long, slightly exserted, glabrous, anthers ovate, ca. 2 mm long. Style filiform, 20-25 mm long, stigma shallowly bilobed, capitate. Capsule oblong-ovate, ca. 10 mm long, 5 mm across, glabrous, enclosed by persistent corolla. Seeds ellipsoid, ca. 0.5 mm long. Yamazaki, 1993 (p. 382)
Ic.: - Tuyama, 1937 (p. 282) Beck, 1930 (p. 331 fig. 24 F,G) Toyoda, 1981 (p. 194, 196) Watanabe in J. Jap. Bot. 42: t. 1-3, col. pl. 2. 1967; Terasaki rev. ed.: t. 2812; Makino, rev. ed.: t. 2801.
Biology: - Fl. 3-4 and 9-10, fr. 5 and 11. In shady, moist evergreen forests.
Host plants:
- Callicarpa subpubescens Hook. & Arn. (Lamiac.) sec. Tuyama, 1937 (p. 281) Yamazaki, 1993 (p. 382)
- Ardisia sieboldi Miq. (Myrsinac.) sec. Tuyama, 1937 (p. 281) Yamazaki, 1993 (p. 382)
- Boninia glabra Planch (Rutac.) sec. Tuyama, 1937 (p. 281) Yamazaki, 1993 (p. 382)
- Boninia grisea Planch. (Rutac.) sec. Tuyama, 1937 (p. 281) Yamazaki, 1993 (p. 382)
- Neisosperma nakaiana (Koidz.) Fosberg & Sachet (Apocynac.) sec. Yamazaki, 1993 (p. 382)
General distribution: - JPN, Bonin Islands (Titizima, Hahazima, Anizima). Endemic.
Examined specimen: -
Further cited locations:
JPN: - Bonin-Islands (= Ogasawara I.): - Titizima (= Chichijima) island, sine loco spec. (Maximowicz no. 39). Tuyama, 1937 (p. 279) - Titzima (= Chichijima) island, Kiyose (K. Kawate March 1906). Tuyama, 1937 (p. 279) - Titizima (= Chichijima) island, sine loco spec. (S. Nishimura March 1912). Tuyama, 1937 (p. 279) - Titizima (= Chichijima) island, sine loco spec. (S. Nishimura no. 365, vere 1914). Tuyama, 1937 (p. 279) - Titizima (= Chichijima) island, Renzyu-dani (H. Toyoshima 05.04.1934 and T. Tuyama 28.03.1936). Tuyama, 1937 (p. 279) - Titizima island, Takeda-bokuzyo (T. Tuyama 09.04.1937). Tuyama, 1937 (p. 279) - Hahazima (= Hahajima) island: in monte Sekimonyama (T. Huzikawa March 1935 and T. Tuyama 09.04.1934). Tuyama, 1937 (p. 279) - Hahazima (= Hahajima) island, sine loco spec. (Y. Yamashina Feb. 1930). Tuyama, 1937 (p. 279) - Anizima (= Anijima) Island. Yamazaki, 1993 (p. 382)
