54 ORCHID FAMILY 



KEY TO THE ORCHID FAMILY 



Orchids Growing on Trees page 



LEAVES present 



Flowers white and rose lonopsis 56 



Flowers greenish, brownish, or white, terminal 



Epidendrum 56 



Flowers greenish or purplish, axillary Vanilla 63 



Flowers yellowish, spotted, pseudobulbs long 



Cyrtopodium 56 



Flowers yellowish, spotted, pseudobulbs short 



Oncidium 57 



LEAVES apparently LACKING 



Flowers large, solitary or few Polyrrhiza 55 



Flowers minute Harrisella 55 



Orchids Growing in Eabth ' 



FLOWERS yellow 



Lip fringed Blephariglottis 59 



Lip not fringed Stenorhynehus 62 



FLOWERS white 



Lip fringed Blephariglottis 59 



Lip 3-parted, not fringed Habenaria 59 



Lip not fringed nor parted, spike spiral Ibidium 61 



Lip not fringed nor parted, spike not spiral 



Gymnadeniopsis 60 



FLOWERS PINK, MAGENTA, OR PURPLE 



Flowers 1-3, Ivs. oblong or elliptic Pogonia 58 



Flowers several or many, Ivs. 1 or 2, narrow. Limodorum 57 



Flowers many, Ivs. usually 3, 1-3 in. wide Bletia 58 



FLOWERS GREENISH, BROWNISH, OR REDDISH 



Leaves Many, Stems Leafy 



Lip 3-parted Habenaria 59 



Lip not parted Habenella 60 



Leaves Few, Chiefly Basal 



Lip 3-lobed Triorchos 58 



Lip not lobed, fls. showy Stenorhynehus 62 



Lip not lobed, concave, fls. small Ponthieva 62 



Lip not lobed, roundish, fls. minute Malaxis 62 



Leaves Lacking Corallorhiza 62 



The very word orchid calls up suggestions of grace and 

 of grotesqueness, of strange beauty and of uncanny mim- 

 icry. More than any other family of flowering plants the 

 orchids seem to have taken life into their own control, 

 and to have developed inexplicably along lines of their 



own. In extravagant variety of flower-form they rival 



