Orchidaceae 



323 



the median sepal; lip ascending, longer dian the sepals, rather 

 deeply 3-lobed, the lobes ovate, the terminal lobe slightly 

 larger, entire or retuse; spur 1-1.5 cm. long, straight or nearly 



so. June-Aug. Shaded rocky cliffs in mountains; Honshu 



(Kanto Distr. and vvestw.), Shikoku, Kyushu; rather rare. 



Korea. 



3. Orchis jooiokiana Makino. Ponerorchis pauciflora 



var. jooiokiana (Makino) Ohwi; O. matsumtirana Schltr. 



NvoHO-cHiDORi. Terrestrial herb with obovoid tuberous 

 roots; stems 12-30 cm. long; leaves usually 2, sometimes 1 or 3, 

 lanceolate, rather acute, 4-8 cm. long, 1-1.5 cm. wide, blades of 

 upper leaves broadly linear, acuminate; flowers 3-8, in slightly 

 one-sided spikes, rose-purple; bracts lanceolate, 1-2 cm. long; 

 sepals 3-nerved, broadly lanceolate, rather acute, 8-10 mm. 

 long, the lateral sepals oblique; petals erect, narrowly ovate, 

 oblique, obtuse, indistinctly 2-nerved, shorter than die sepals; 

 lip spreading, broadly 4-angled, cuneate, longer than the sepals, 

 3-lobed above, 13-15 mm. long and as broad, the lateral lobes 

 ovate, the terminal lobe larger, retuse; spur straight, 15-17 



mm. long. July and Aug. High mountains; Honshu 



(Kanto and centr. distr.) ; rare. 



4. Orchis chidori (Makino) Schltr. Gymnadenia chi- 

 dori Makino; O. rupeslris var. chidori (Makino) Soo; Poneror- 

 chis chidori (Makino) Ohwi Hina-chidori. Roots tu- 

 berous; stems slender, 7-12 cm. long, 1-leaved near the mid- 

 dle; leaf ascending, broadly lanceolate or narrowly oblong, 

 7-12 cm. long, 12-25 mm. wide, short-acuminate, flat, spread- 

 ing; spikes one-sided; flowers 1-6, rose-purple, the bracts 

 narrowly lanceolate, obliquely ascending, acuminate, 1-1.5 cm. 

 long; sepals 3-ner\'ed, 5-6 mm. long, subobtuse, the dorsal 

 sepal oblong, slightly navicular, erect, forming a hood with the 

 petals, the lateral sepals subovate; petals slightly shorter than 

 the sepals, obtuse; lip ascending, 8-10 mm. long, rather deeply 

 3-lobed, the lobes ovate, 4-angled; spur 13-17 mm. long, 



straight or slightly curved. July-Aug. Shaded rocks in 



mountains; Honshu, Shikoku; very rare. 



5. Orchis curtipes Ohwi. Chaeo-chidori. Small epi- 

 phyte on tree-trunks; stems about 7 cm. long, erect; leaves 1, 

 near the base, narrowly ovate-oblong, spreading, about 6 cm. 

 long, 2 cm. wide, flat, with a short sheath at base; spikes one- 

 sided, few-flowered, the lowermost bract at base of spike leaf- 

 like, to 4 cm. long, rounded at base, the others narrowly 

 lanceolate, nearly erect, gradually acuminate, 1-2 cm. long, 

 2-3 mm. wide; flowers rose-purple, the dorsal sepal erect, nar- 



rowly ovate, slightly navicular, rather obtuse, weakly 3-nerved, 

 5-6 mm. long, forming a hood with the petals, the lateral 

 sepals spreading, broadly falcate-lanceolate, 3-nerved, 6-7 mm. 

 long, rather obtuse; petals obliquely ovate, 3-nerved, subobtuse, 

 as long as the dorsal sepal; lip about 1 cm. long, flat, spread- 

 ing, 3-lobed, the terminal lobe broadly lanceolate, entire, ob- 

 tuse, about 6 mm. long, 2.5 mm. wide, the lateral lobes shorter 

 than the terminal, about 4.5 mm. long, oblong-ovate, obtuse, 

 entire; spur straight, gradually narrowed to tip, obtuse, about 

 15 mm. long. Aug. Hokkaido (Kushiro) ; very rare. 



6. Orchis cyclochila (Fr. & Sav.) Maxim. Habenaria 

 cyclochila Fr. & Sav.; Gymnadenia cyclochila (Fr. & Sav.) 



Korsh.; Galeorchis cyclochila (Fr. & Sav.) Nevski Ka- 



MOME-RAN. Small terrestrial herb with slightly thickened 

 roots; stems 7-15 cm. long, 1-leaved at base; leaves radical, 

 pedolate, oblong to broadly ovate, or broadly ellipdc, 4-6 cm. 

 long, 2-5 cm. wide, obtuse to rounded at apex; flowers usually 

 2, pale rose with small deeper colored dots on lip, rarely white; 

 bracts narrowly oblong to narrowly ovate, subacute, 1-2 cm. 

 long; sepals broadly lanceolate, 8-10 mm. long, acuminate, 

 3-nerved, gradually narrowed to a somewhat obtuse dp, the 

 dorsal sepal erect, the lateral sepals ascending-spreading; petals 

 lanceolate, rather obtuse, slightly shorter than the sepals; lip 

 broadly ovate, mucronate, about 1 cm. long, slightly con- 

 tracted above the middle and obsoletely 3-lobed; spur hnear, 

 slightly curved, slender, 7-10 mm. long, subacute, as long as 



or slighdy shorter than the ovary. May-June. Mossy 



places in woods in mountains; Hokkaido (Kushiro), Honshu 

 (centr. and n. distr.), Shikoku; rare. Korea and Ussuri. 



7. Orchis fauriei Finet. Chondradenia yatahei Maxim, 

 ex Makino; O. chondradenia Makino; C. fauriei (Finet) Sa- 

 wada Onoe-ran. Terrestrial herb with slightly thick- 

 ened roots; stems 8-15 cm. long, erect, 2-leaved; leaves nearly 

 radical, oblong, elliptic, or broadly oblanceolate, 6-10 cm. 

 long, 1.5-4 cm. wide, rounded to acute, shortly sheadied at 

 base; flowers 2-6, white; bracts broadly lanceolate, 1-2 cm. 

 long; sepals somewhat spreading, oblong, obtuse, 5-nerved, 

 8-10 mm. long; petals narrowly oblong, very obtuse, with 

 obsolete minute teeth on upper margins, as long as die sepals 

 but slightly thicker; hp ascending, cuneate, as long as but 

 thicker than the sepals, sHghdy broadened and spreading at 

 tip, about 3.5 mm. wide near the reWse apex; spur ellipsoidal, 



3-4 mm. long. July-Aug. Grassy places in mountains; 



Honshu (Kanto and a. distr.); rare. 



4. PLATANTHERA L. C. Rich. Tsure-sagi-so Zoku 



Terrestrial, with elongate, slighdy thickened roots; leaves usually cauline, 1 to several, linear to elliptic; racemes few- to many- 

 flowered, bracteate; flowers rather small, greenish, rarely white; sepals subequal, ovate, the dorsal one erect, sometimes forming 

 a hood with the petals, the lateral sepals spreading; petals similar to the sepals, the lip usually simple, linear, sometimes ovate 

 or ligulate; anther-locules parallel or divergent, usually widely separated; rostellum not extended, low and broad; stigma de- 

 pressed. About 100 species, in temperate and cooler regions of die N. Hemisphere. 



lA. Sepals about 2 mm. long; lip ovate-orbicular, with a very short spur; leaves 2, approximate, broadly elliptic or nearly orbicular. 



1. P. chorisiana 

 IB. Sepals 2-12 mm. long; lip linear-lanceolate to broadly lanceolate, sometimes ligulate, with an elongate or short spur. 

 2A. Lower 1 or 2 leaves largest, the upper ones abrupdy reduced and scalelike; dorsal sepal flat, not navicular. 



3A. Spur 2-3 mm. long; sepals white, about 4 mm. long; flowers greenish white, the lip ligulate 2. P. brcvicalcarala 



3B. Spur 5-30 mm. long, if shorter the flowers greenish with rather thick petals. 



4A. Flowers white, rather large; leaves nearly radical, usually paired, narrowly oblong. 



5A. Anther-locules approximate, divergent at base; dorsal sepal ovate, 5.5-6 mm. long; spur gradually narrowed toward the 

 obtuse apex; bracts lanceolate 3. /". mctabijolia 



