(68) 
+ 決 萌 
の 
a) 
HEA + FY 

All Known Species of the Japanese Listera. ( 
3. Tistera shikokiana spec, nov, 
Perianth thin, reflexed, one-nerved. Sepals obtuse ; the upper one ovate-oblong ; the lateral ones slightly 
oblique and oblong. Petals almost as long as the sepals, spathulate-oblong, quite obtuse, with revo- 
lute margins. . Labellum deflexed, thrice longer than the perianth, more or less carnose towards the cen- 
‘tral portion, 2-fid, with a minute blunt tooth between the two lobes; lobes lanceolate, acute, divergent, 
3 一 4 nerved ; basal teeth minute, sagittate, and clasping the column. Column short, globose : clinandrium 
large, deeply concave; rostellum short, very slightly retuse : stigma horizontal, concave. Anther broadly 
ovate, convex, sessile on the dorsal portion of the clinandrium. Ovary obovoid, glabrous. 
small herb. oot-fibres very long,fili form. Rhizome slender, creeping. Stem erect, angular, smooth, 
and with 2—3 membranous sheaths at the base. Leaves 2, much shorter than the stem, subopposite, sessile, 
deltoid-ovate or rhombic-deltoid, sometimes subcordate, abruptly narrowed at its basal portion, acute, 
membranous, and glabrous; margins crisped; main nerves 3 with reticulated veinlets; the upper surface 
often albescent along the midrib. Raceme usually shorter than the stem, glandular-pubescent ; flowers 
greenish-purple, 2-3, arranged loosely; pedicel slender, filiform, glabrous. Bracts minute, obtuse, some- 
times acute, embracing the base of the pedicel. Fls, April. 
Whole plant 5—9 cm. high. Leaves 12~15 x 7—14 m.m. Raceme 21—31c. m. long. Pedicel 31—6 
m.m. long. Perianth-segments 21—3 m.m. long. Labellum about 7 m.m. long. Ovary 2—21 m.m. long. 


