PIPER—-FLORA OF THE STATE OF WASHINGTON. 205 
ORCHIDACEAE. Orcuip Famrry. 
Perfect anthers 2; lip large, sac-like.........-....--.-...--- CypRipepium (p. 205). 
Perfect anther 1. 
Plants saprophytic, without green herbage. 
Flowers spurred, reddish o1 white. .......---------- CoraLioruiza (p. 206). 
Flowers spurless, white. ...........-.------------- CEPHALANTHERA (p. 206). 
Plants with ordinary green herbage. 
Flower and leaf solitary; plant bulbous..........-.-- CYTHEREA (p. 207). 
Flowers several to many in racemes. 
Leaves only two. 
Both leaves cauline; lip 2-lobed..........- Opurys (p. 207). 
Both leaves basal; lip entire.............. Leprorcuis (p. 208). 
Leaves more than two. 
Cauline leaves reduced to bracts. 
Basal leaves several, white-reticulated.. PERAMIUM (p. 208). 
Basal leaves twe, green and shining. ... Lystas (p. 208). 
Cauline leaves not reduced to bracts. 
Anther on the face of the column. 
Stem leaves abruptly reduced; lat- 
eral sepals adnate to the base of 
the lip....-.------+---------- PrpEria (p. 208). 
’ Stem leaves gradually reduced; lat- 
eral sepals free... ......------- Limnorcuis (p. 209). 
Flowers spirally arranged ina dense 
spike _...-...22..------------ Tpiprum (p. 211). 
Anthers on the summit of the column. 
Flowers in a loose leafy raceme. . . - - Epipactis (p. 211). 
CYPRIPEDIUM. Lapy’s slipper. 
Lip about 1 em. long; flowers greenish brown --......-.------------- 1 @. fasciculatum. 
Lip 1.5 to 5 em. long; flowers not greenish brown. 
Flowers yellow; lip 1.5 to 3. em. long.......-.-.------ weceeeee 2. C. parviflorum. 
Flowers brown, with a white lip 3 to 5 em. long.........--.----- 3. C. montanum. 
Dp 
1. Cypripedium fasciculatum Kellogg; 5. Wats. Proc. Am. Acad. 17: 380. 1882. 
Type Locauiry: “On the White Salmon River above the falls,’ Washington. Collected 
by Suksdorf. 
Rance: Washington to California. 
SPECIMENS EXAMINED: Klickitat County, Suksdorf 900, 310, May, June, 1886; Wen- 
ache Region, Brandegee 1095. 
2. Cypripedium parviflorum Salish. Trans. Linn. Soe. 1: 77. 1791. 
Type Loca.ity: ‘‘Sponte nascentem in Virginia.” 
Rance: British Columbia to Newfoundland south to Washington, Missouri, and Georgia. 
SPECIMENS EXAMINED: Spokane County, Sandberg & Leiberg 125; Suksdorf 946; Spo- 
kane, Piper, May, 1897; Henderson 2478. 
Our western form corresponds to C. flavescens DC. in Redoute, Lil. 1: pl. 20. 1802, 
questionably distinguishable by somewhat narrower leaves and with the lip a little com- 
pressed laterally. 
3. Cypripedium montanum Dougl.; Lindl. Gen. & Sp. Orch. 528. 1840. 
Type Locauity: “Hab. in America boreali-occidentali.”’ Collected by Douglas. 
Rance: Washington and Idaho to California. 
SPECIMENS EXAMINED: Mount Stuart, Sandberg & Leiberg 572; Wenache Mountains, 
Whited 152; Clealum, Henderson, June, 1892; Kalispel Valley, Areager in 1902; Mount 
