Northeastern Asian Flora
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Calypso bulbosa (L.) Oakes  
Family: Orchidaceae
[Calypso borealis (Sw.) Salisb., moreCalypso bulbosa f. albiflora Satomi, Calypso bulbosa subsp. speciosa (Schltr.) Kitam., Calypso bulbosa var. speciosa (Schltr.) Makino, Calypso speciosa Schltr., Cymbidium boreale Sw., Cypripedium bulbosum L., Cytherea bulbosa (L.) House, Cytherea speciosa (Schltr.) Makino, Orchidium boreale (Sw.) Sw.]
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  • Japan Flora
  • Far Eastern Russia
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Japan Flora: Glabrous perennial from a short, fusiform or narrowly ovoid pseudobulb; leaves ovate-elliptic, obtuse to acute, 2-5-5 cm. long, 1.5-3 cm. wide, slightly plicate, deep green above, purple beneath, the petiole 1.5-4 cm. long; scape 6-15 cm. long, erect, slender, with 2 membranous, sheathing scales near the base; flowers solitary, terminal, the bract broadly linear, 1.2-25 cm. long, acuminate; sepals and petals spreading, brownish rose, linear-lanceolate, 2-3 cm. long, 3-4 mm. wide, acuminate; lip pendulous, broadly ovate, 2.5-3 cm. long, white with pale brown spots inside, the pouch antrorse, bifid, softly long-pubescent within, the limb contracted, rounded at apex, with undulate margins; column flattened, ovate-elliptie, 1.3-15 cm. long, about 1 cm. wide; capsules clavate, cylindric, about 2.5 cm. long, long-pedicelled, ascending. May-June. Coniferous woods in mountains;

Honshu (north and centr. distr.); very rare. The Japanese phase nearly corresponds with the N. American

var. occidentals Holz, which has the limb of the lip shorter than the apical append-ages of the pouch.

Russia Flora: Plants up to 25 cm tall. Corm oblong, with membranous sheaths and cord-like root fibers. Stem erect, thin, with 2 membranous sheaths. Leaf 1, up to 4 cm long and 3 cm wide, ovate, acute, with petiole up to 7 cm long arising from upper part of corm. Flower 1, with linear-lanceolate bract. Perianth segments almost equal, up to 2.5 cm long and 3 mm wide, linear-lanceolate, acute, directed upward and radiately divergent, dark pink, with 3 veins. Lip up to 2.2 cm long, in form of slipper narrowed toward apex, whitish and yellowish, with reddish-brown stripes and spots, with pink petal-like limb in front and 3 tufts of yellow hairs at base. Capsule up to 2.7 cm long, straight, oblong.

Okhotsk, Aldan, Upper Zeya, Bureya, Amgun, Ussuri, South Sakhalin. - Dark coniferous wet and moist forests, rarely in wet larch forests. Ornamental. V-VIII. - General distribution: European part, West and East Siberia; Scandinavia, Mongolia, Japan-China, North America. - Described from Sweden.

Calypso bulbosa
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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