Orchidaceae 



331 



the lateral sepals, spurless; anthers large, the locules small, lateral, incurved, the connective large; rostellum deltoid, erect, with 



spreading lateral lobes; stigmas 2, papillose, stalked, the caudicles attached to the rostellum; ovary sessile, slightly twisted. ^Two 



species, one in w. China and one in Japan. 



1. Androcorys japonensis F. Maekawa. Misuzu-ran. 

 Roots tuberous, small; leaf membranous, solitary, basal, erect, 

 oblanceolate-oblong, 15-22 mm. long, 5-7 mm. wide, obtuse, 

 long-attenuate at base; scapes 7.5-9 cm. long, erect, covered at 

 base with leaf-sheaths, the bracts minute; flowers 2-3, 2-2.5 

 mm. across; dorsal sepal elliptic, obtuse, about I mm. long, the 

 lateral sepals slightly reflexed, falcate, oblong, obtuse, irregu- 



larly denticulate, about 1.5 mm. long; petals oblique, ovate- 

 rounded, 0.8 mm. long, incurved at tip, narrowed to the base, 

 with minute irregular teeth on margins, forming an open hood 

 with the dorsal sepal; lip ligulate, not spurred, lanceolate, 1.5 

 mm. long, obtuse, broader at base; column about 1 mm. long. 



Aug. High mountains; Honshu (Yatsugatake) ; very 



rare. 



12. MICROTIS R. Br. Niraba-ran Zoku 



Small terrestrial plants with tuberous roots; stems low, 1-leaved; leaf elongate, linear, terete, sheathing the lower part of the 

 stem; inflorescence densely spicate, minutely bracteate; flowers minute; dorsal sepal erect, broad, incurved, the lateral sepals 

 lanceolate or oblong, free, spreading or reflexed; petals similar to the lateral sepals or smaller; lip attached to the base of the 

 column, sessile, spreading, oblong, entire or bifid, often with callosities at base; spur absent; colurrm very short, with 2 auricles 



at apex; stigma short, obtuse, attached at base of rostellum; anther erect; pollinia granular. About 10 species, chiefly in 



Australia, a few in e. Asia and Malaysia. 



1. Microtis formosana Schltr. M. parviflora sensu auct. 



Japon., non R. Br. Niraba-ran. Tubers globose, 5-8 



mm. across; stems 10-30 cm. long, 1-leaved near the middle, 

 enveloped by a sheath on lower half, \\'ith few leafless mem- 

 branous sheaths at the base, naked on upper half; leaves nearly 

 radical, terete, 2-2.5 mm. across, longer than or as long as the 

 stem, gradually narrowed to the tip, obtuse, long-sheathing at 

 base; spikes 2-8 cm. long, rather densely flowered; bracts 

 membranous, narrowly ovate-deltoid, 2-4 mm. long, nearly 

 nerveless, mostly acuminate, mucronate; flowers green, about 

 2.5 mm. across; dorsal sepal elliptic, about 2 mm. long, erect. 



concave, slightiy incur^'ed at tip, obtuse, the lateral sepals 

 gendy reflexed, narrowly oblong, obtuse, slighdy shorter than 

 the dorsal; petals narrowly oblong, obtuse, about 2/3 as long 

 as the dorsal sepal; lip spreading, somewhat fleshy, quad- 

 rangular-oblong, nearly as long as the dorsal sepal, truncate at 

 apex, slighdy broadened at base, witii 2 obscure callosities at 

 the base; spur absent; ovary short-pedicelled, capsules 3-4 mm. 



long. Apr .-May. Grassy places in lowlands; Honshu (Izu 



Isls., Kazusa, Kii, and Suwo Prov.), Sliikoku, Kyushu; rare. 

 China, Ryukyus, and Formosa. 



13. LISTERA R. Br. Futaba-ran Zoku 



Terrestrial, slender, rhizomatous perennials; stems erect, simple, with a few scales or scalelike leaves at base, the principal leaves 2, 

 opposite, near middle of the stem, sessile, spreading, not sheathing, ovate-rounded; inflorescence racemose, the flowers 

 small, usually pedicelled, yellowish green, the bracts small; sepals equal, free, refle.\ed to spreading; petals resembling the sepals; 

 lip longer than the sepals, attached to base of column, spreading, often pendulous at tip, entire or bifid, usually auriculate near 

 base; column very short, without a foot, wingless; rostellum terminal, sometimes reclined; stigma broad; anther-locules con- 

 tiguous, the pollinia often bifid in each locule, granular; capsules pedicelled, obovoid or globose, erect or spreading. About 30 



species, in Europe, Siberia, n. India, e. Asia, and N. America. 



W. Leaves slighdy above the base of the stem, elliptic to broadly ovate; scalelike leaves on the scape 4-10, with a filiform slightly re- 

 flexed apex; lip without auricles \. L. mal^inoana 



IB. Leaves nearly at the middle of the stem; scalelike leaves 0-2. 



2A. Lip 5-8.5 mm. long, with obtuse lobes, with or without auricles. 

 i.\. Lip auriculate near base, glabrous; perianth segments reflexed. 



4A. Lobes of lip linear-oblong, the auricles loosely embracing the column; leaves deltoid or deltoid-cordate 2. L. japonica 



4B. Lobes of lip ovate, the auricles ascending, not embracing the column 3. L. nipponica 



33. Lip without auricles, ciliolate, the lobes ovate; perianth segments spreading 4. L. yatabei 



2B. Lip 2.5-3.5 mm. long, with linear lobes, the auricles spreading outward; scapes naked 5. L. cordata 



1. Listera makinoana Ohwi. L. savatieri sensu auct. the bracts spreading, small; sepals oblong-lanceolate, rather 



Japon., non Maxim, ex Komar.; L. patcntijolia Nevski obtuse, 2-2.7 mm. long; petals linear, obtuse; lip 2-2.5 times 



Ao-FUTABA-RAN. Rhizomes slender, creeping, with filiform as long as the sepals, narrowly obovate-cuneate, not auricled, 



roots; stems 10-25 cm. long, slender, 2-leaved near the base, the lobes ovate, rounded at apex. Aug. Woods in moun- 



glabrous below the leaves, glandular-puberulous on upper tains; Honshu, Shikoku, Kyushu. 



portion above the leaves; leaves 2, spreading, elliptic-ovate to 2. Listera japonica Bl. L. si^ot^iana Makino Hime- 



ovate-rounded, somtimes deltoid-ovate, 12-40 mm. long, 10-30 futaba-ran, Murasaki-futaba-ran. Rhizomes slender, creep- 



mm. wide, obtuse to subacute, broadly truncate to shallowly ing; stems erect, 5-18 cm. long, slender, usually 2-leaved above 



cordate at base, 3-nerved; scalelike leaves 4-10, loosely alter- the middle, the lower portion glabrous, the upper portion 



nate, ascending, narrowly linear, 2-5 mm. long, with a filiform loosely glandular-puberulent; leaves 2, deltoid to deltoid- 



slightiy reflexed apex; flowers 5-20, greenish, loosely arranged, cordate, 1-2 cm. long, 0.7-2 cm. wide, sessile, acute or mucro- 



