ORCHIDACEAE 65 



— In rich woods, local. Dodson, Independence, Courtney, Ribley, Lee's 

 Sunjniit. Ours is mostly the form known as C. parviflorum Salisb. May. 



2. ORCHIS L. 



Flowers several, spiked. Sepals and petals about equal. Lip spurred 

 beneath, turned downward, connate with base of column. Anther cells 

 parallel. Pollen masses one in each cell, stalked, attached at base to 

 disks (glands), the two disks contained in a common pouch. 



1. O. spectabilis L. Showy Orchis. Leaves two, large, obovate : 

 scape 4^-10' high, 4-angled : flowers violet-purple, the lip white. — In 

 rich woods. Rare. Courtney, Lake City and Siblej'. May. 



3. HABENARIA Wiild. 

 Differs from Orchis in having glands not enclosed in a pouch and sepa- 

 rate. 



1. H. leucophaea (Nutt.) A. Gray. Prairie Orchis. li°-3° high : 

 leaves oblong-lanceolate : lip 6''-7^^ long, 3-parted, copiously fringed : 

 spur 1^-U^ long — Uncommon on moist prairies. Adams, Little Blue 

 Tank, Lee's Summit, Greenwood, Grand View, Levasy, Oak Grove. 

 June. 



4. PO&ONIA Juss. 



Low, few-flowered herbs with equal erect petals and sepals. Lip not 

 spurred. Column elongated, club-shaped at summit. Anther-sacs par- 

 allel. PoUinia one in each cell. 



1. P. trianthophora (Sw. ) B.S.P. Nodding Log Orchid. Stems 

 3'-8' high, from tubers : leaves alternate, ovate-clasping, ?,"-&" long : 

 flowers 1-4 in upper axils, &' long, whitish with pale purplish-white 

 markings. — On logs in rich bottom woods; north of Courtney (1881); 

 along the Blue south of Swope Park (1901). Very rare and local. Au- 

 gust-September. 



5. GYROSTACHYS Pers. Ladies' Tresses. 

 Herbs from fleshy tubers with whitish flowers in 1-3-ranked spikes. 

 Sepals somewhat coherent. Lip embracing the column and with two 

 callosities at base. Column oblique. Stigma prolonged into an acu- 

 minate beak. Pollen masses one in each cell. 



Flowers three-ranked. 



Leaves oblong to oblong-lanceolate. 1. G. plantaginea. 



Leaves linear to linear-oblanceolate. 2. G. cernua. 

 Flowers in one spirally-twisted rank. 



Stem leafy at base. 3. G. praecox. 



Stem not leafy at base. 4. G. gracilis. 



1. G. plantaginea (Raf. ) Britton. 4^-9' high: leaves 2-5, basal, 

 1^-4'' long : spike 2' long : callosities absent or minute. — Rare and local 

 in rich woods near Courtney and Athertou. September. 



