288 T. Makino. 



8. Mitetta (Mitellaria) japonica Miq. var. integripetala Makino, 1. c. p. 17. 



Leaves oval-ovate, deeply cordate with a close sinus, acute or sub- 

 acute, shallowly lobate with depressed-ovato-deltoid dentate lobes, very 

 thinly pilose or subglabrous, dark-green along the nerves. Petal simple, 

 subulato-filiform, smooth, recurved-reflexed, reddish above. Stigma semi- 

 orbicular, 2— 4-lobulate, red. Flowers in April. ■— Hab. Prov. Musashi: 

 Tokyo, cult. (T. Makino! May 9, 1904). — This differs from the typical 

 one of Mitella japonica Miq., which has pinnate petals. 



9. Platanthera (Bifoliae) Okuboi Makino, 1. c, p. 25. 



A terrestrial orchid, 20—45 cm high, glabrous. Tuber elongately 

 angustato-fusiform, perpendicular; roots few, simple. Stem erect, stout, 

 straight, sheathing with 2 — 3 vaginate cataphylls at the base. Leaves 

 5—8; the lower 2 larger and normal, equal or nearly so in size and in 

 form, 10 — 20 cm long. 3—5 cm broad, approximate, erect-patent, elliptical 

 to narrowly oblong, obtuse at the base, obtusely narrowly attenuated and 

 amplexicaul at the base, evaginate, membranaceous, 7 — 8-nerved on each 

 side; transverse veinlets oblique and loose, with, a few simple or 2 — 3- 

 forked erect branches on the upper side; upper leaves laxly disposed, 

 adpressed or erect-patent, lanceolate, attenuated above with an obtuse 

 point; semiamplexicaul, evaginate, 2—6 cm long, the lowest one some- 

 times attaining about 12 cm long. Raceme erect, densely or rather 

 densely many-flowered, 5-10 cm long, 3—4 cm wide; rachis straight; 

 bracts erect-patent, foliaceous, lanceolate to ovato-lanceolate, acuminate 

 with an obtuse point, equal to or slightly longer than ovaries, mem- 

 branaceous, 3-several-nerved, with loosely anastomosing veinlets, attaining 

 about 2V 4 cm long. Flower viridescent white? Sepals membranaceous; 

 the upper one erect, ovate or subdeltoid-ovate, obtuse, sub-5-nerved, 

 6—8 mm long, 4-6 mm wide; lateral ones patent-reflexed, slightly 

 oblique in shape, ovato-lanceolate or oblong-lanceolate, obtuse, longer 

 than the upper one, 3— 5-nerved, 8— 10'/ 2 mm long. Petals erect, slightly 

 lower than the upper sepal, thickish, subfalcately ovato-linear or oblong- 

 linear, obtuse, 3-nerved, about 6— 6 l / 2 mm long. Labellum lanceolato- 

 ligulate. obtuse, entire, carnosulate, sub-5-nerved, about 10 mm long, 

 3— 3^3 mm wide at the base; spur longer than the ovary, elongate, 

 narrow, falcate towards the apex, about 2'/ 2 — 3 cm long. Column short, 

 broad, emarginato-bifid at the top; anther-cells remote, obovoid-oblong; 

 rostellum broadly obtuse: column-auricles ellipsoid. Ovary angustate. 

 arcuate, gradually attenuated above, about 1V 2 cm long. — Norn. Jap. 

 Hachijo-tsuresagi (nov.). — Hab. Isl. Hachijo: Nishiyama (Saburo 

 Okubo! herb. Sc. Coll. Imp. Univ. Tokyo, May 13, 1887). — This species 

 is known only from Isl. Hachijo. It is allied to Platanthera japonica 

 (Thunb.) Lindley, of which the tuber is horizontal, the lower larger 

 leaves more than two, the upper sepal subovato-elliptical and much con- 

 cave, the lateral sepals shorter and broader, and the base of the anther- 

 eells more produced; the veinlets of leaves are also different. It differs 

 also from Platanthera chlorantha Cust. in all the respects except the 



