134 



ORCHIDACEJE. 



1-flowered, sheathed hy a few scale-like leaves and with a single 

 petioled leaf at base. Flowers large, showy, terminal, bracted. 

 Sepals and petals similar and equal; lip sac-like, with 2 short spurs 

 below the expanded apex. Column broadly winged, almost oval, 

 concave, and petal-like; anther hemispherical, borne just below the 

 summit, opening by a lid. (Named for the nymph Calypso in 

 Homer. ) 



1. C. boreal is Salisb. Calypso. Stem 4 or 5 in. high, the 

 sheathing scales 1 to 2 in. long; leaf ovate, cordate or truncate at 

 base, 1} to 2} in. long; petioles ^ to 1£ in. long; flower on a drooping 

 pedicel; sepals and petals rose-purple, sometimes pale, linear- 

 lanceolate, 9 lines long; lip as long or slightly longer, ovate-inflated, 

 reddish-brown and mottled, the terminal expanded portion with 3 

 hairy ridges at base running towards the spurs. 



Bogs or in leaf-mold in the redwood forests from Mt. Tamalpais 

 and Cazadero to Mendocino Co. and northward along the coast. 

 Mar. Flowers resembling those of the Lady's Slipper. 



7. CORALLORHIZA R. Br. Coral-root. 

 Brownish or yellowish saprophytes or parasites, destitute of green 

 herbage, and with branching toothed coral-like roots. Stem scape- 

 like, the leaves reduced to scales, and bearing the flowers in a 

 terminal raceme. Perianth segments oblong or lanceolate, nearly 

 alike, ours 3-nerved. Lateral sepals united at base with the foot of 

 the column, forming a short spur which is adnate to the summit of 

 the ovary. Lip 1 to 3-ridged. Column 2-edged, slightly incurved. 

 Anther terminal, opening by a lid. Pollen-masses 4, soft-waxy. 

 Capsules reflexed. (Greek korallion, coral, and rhiza, root.) 



Perianth 3 or 4 lines long, the lateral sepals spurred at base; lip 3-lobed, the 



niid'lle lobe hirgest 1. C. multiflora. 



Perianth 6 lines long; spur none; lip entire 2. C. Bigelovii. 



1. C. multiflora Nutt. Stems 8 to 13 in. high; raceme 2 to 4 in. 

 long; flowers whitish, tinged or veined with purple; sepals and petals 

 3-nerved, 3 or 4 lines long; lateral sepals united at base with the foot 

 of the column forming a short (1 line long) spur which is adnate to 

 the ovary; lip mostly purple, broadly ovate and somewhat convex, 

 3-lobed by a deep cleft on each side; lateral lobes narrow and acutish; 

 middle lobe large and rounded or notched with involute or denticu- 

 late margin; raceme loose, 3 to 10 in. long; capsules | in. long. 



Shade of woods in the seaward or middle Coast Ranges: Oakland 

 Hills; Mt. Tamalpais; Mt. St. Helena. 



2. C. Bigelovii Wats. Stems 12 to 15 in. high, with 3 or 4 

 sheathing leaves; sepals and petals somewhat flesh-colored, striately 

 3-nerved with purple or reddish-brown lines, about 6 lines long; 

 lateral sepals oblique; lip quite entire; base of the column (opposite 

 lip) prominently gibbous over the ovary; capsule 6 to 9 lines long. 



Mountain woods of the Sierras and along the coast. 



