ORCIIIDE^E. (orvCIIIS FAMILY.) 757 



cells parallel, with beak between. Pollinia with a viscid gland at base 

 ot caudicle. Pouch 2-cclled, enclosiuo- rriands. Ovarv "■encrally 

 twisted — Herbs, (ours) with tuberous roots. 



Sect. I. Herorchis. Sepals coiinivent, forming a liood. 



=>= T'uljers ovate-globular, undivided, not tapering. Bracts mcmhranoitn. 



t Bracts alout as long as ovary or longer, 



X LalelUm entire. Floiocrs .03 to .03 long. 



1 O. papilionacea. 



X X Lalellum o-lobed or -parted. 



2 O. ]Morio, P> coriophora, 4 sancta, 5 tridentata, G lactea. 



1 1 Bracts very small, scale-lile. LaMlum tripartite. 



T 0. Simla, 8 puuctulata, 9 lougicruris. 



'■^ '^ Txdiers cylindrical, fu.siform-ta,pering. sometiraes hied. Bracts 

 lierlaceons. 



10 O. angustifolia. 



Sect. II, Androrchis. Sepals spreading or reflexed. 

 '■'^ Tubers ovate-globular, undivided, not tapering. 

 t Bracts membranous, iisually colored^ simp)le- nerved. 

 X Ladelhnn undivided. 



11 0. saccata. 



X X LabeUuni more or less Z-lobed. 



12 O. mascula, 13 Anatolica. , 



1 1 Bracts membranous, the loicer especially ndted-nerved. 



14 O. palustris, 15 laxiflora. 



•^ ''^ Tubers palmate-lobed or -cleft, the lobes tapering-fusiform. Bracts 

 membranous, the loicer especially netted-nerved. 



16 0. incarnato, 17 latifolia. 18 pseudosambuciua, 10 maculat; 



1. O. papilionacea, L. -Ijl Butterfly Orchis. .2 to .3: tuber.s 

 globular. Leaves oblong to lanceolate. Spike loose, usually fcw- 

 flowered,''ovate to oblong, .04 to .15 long; bracts 3-5-uerved, purplish, 

 longer than ovary; sepals and petals lanceolate-ovate to lanceolate, 

 purple; labellum orbicular to obovate, constricted at base, usually cre- 

 nate-denticulate, deep red, longer than sepals; spur cylindrical-subulate, 

 somewhat shorter than ovary — IMarch to May — Rocky places and 

 liillsides; coast and lower zones of mountains; Zahlcli. 



2. O. Morio, L. % .25; root-leaves oblong, .05 to .1 long; 

 stem-leaves clasping, sheath-like. Spike. loose; bracts oblong, about 

 •5-nerved, purplish, sepals and petals oblong, short, obtuse, light pink 

 with green nerves ; lobes of light pink labellum entire or dentate, the 

 middle one refuse; spur ascending, or horizontal, cylindrical, dilated 



