64 OKCHIDACEAE 



1. G. Chinensis ( L. ) Kuntze. BLACKBERRY LILY. Flowers reddish- 

 orange, purple-mottled. Thoroughly adventized on hillsides and along 

 brooks. Leeds, Sibley, along Little Blue, etc. June-August. 



3. SISYRINCHIUM L. BLUE-EYED GRASS. 

 Tufted perennials with linear grass-like leaves and fugacious umbel- 

 late flowers from a pair of green bracts. Perianth segments mostly aris- 

 tate. Stamens monadelphous to near the top . Capsule globular, 3-angled. 



Flowers yellow. 1. S. flaviflorum. 

 Flowers white or blue. 



Stems usually bearing 2 spathes. 2. 5. graminoides. 



Stems bearing but one spathe. 3. S. campestris. 



1. S. flaviflorum. Bicknell. Lower bract very large : flowers clear 

 lemon-yellow. Frequent in post-oak woods southeast of Independence 

 in two places. May. 



2. S. graminoides Bicknell. Stems 10 / -18 / high, broadly winged : 

 leaves \\" wide : lower bract 1-2 times length of upper : capsule 2 // -22 // 

 broad. Rather frequent in shaded woods. May- June. 



3. S. campestris Bicknell. Stems 7 / -15 / high, somewhat winged : 

 leaves V or less wide : lower bract twice length of upper : capsules 1 \" 

 broad. Prairies and oak woods in the southern part, rather common. 

 May. 



FAMILY 27. ORCHIDACEAE Lindl. 



Herbs with perfect irregular flowers. Perianth of six divisions, the 

 three outer (sepals) nearly sessile. Two of the inner (petals) differing 

 from the third, which is called the lip. Anthers one (or two in Cypri- 

 pedium) united with the style into the column. Anthers two-celled, con- 

 taining 2-8 masses of pollen attached to a disk (gland). Ovary 1-celled, 

 3-angled, and filled with innumerable, sawdust-like ovules. 



(The following key applies only to the species represented with us.) 



Lip forming a large inflated sac. 1. CYPRIPEDIUM. 



Lip not forming a large inflated sac. 

 Flowers white. 



Lip long-fringed. 3. HABENARIA. 



Lip not long-fringed. 5. GYROSTACHYS. 



Flowers colored. 



Flowers numerous ; leaf solitary. 6. APLECTRUM. 



Flowers numerous ; leaves two. 2. ORCHIS. 



Flowers few. 4. POGONIA. 



1. CYPRIPEDIUM L. 



Flowers one to several, large and showy. Sepals and petals similar, 

 spreading. Lip a large inflated sac. Column declined, bearing a stamen 

 on each side and a dilated triangular body over the summit of the style. 

 Stigma broad. Pollen granular. 



1. C. hirsutum Mill. LADY'S SLIPPER. Hairy, l-2^ high : leaves 

 many, oval : petals and sepals yellowish, purple-streaked : lip yellow. 



