KEY FOR JUNE TO NOVEMBER 



414 a Leaves 1-2 in. long, often with whitish veins 



Peramium. p 139 



b Leaves 2-5 in. long, not with whitish veins 415 



415 a Flowers violet-purple, with a spur Galeorchis. p 138 



b Flowers purple, not with a spur Leptorchis. p 139 



416 a Flowers whitish, less than i in. broad 417 



b Flowers pink or purple, about i in. or more long .... 419 



417 a Flowers not with a spur, arranged in a somewhat spir- 



ally twisted spike Gyrostachys. p 139 



b Flowers with an incurved spur 418 



418 a Plant with numerous leaves 3-10 in. long.Limnorchis. P 138 

 b Plant with i conspicuous leaf near the base 



Gymnadeniopsis. p 138 



419 a Stalk 3-i5-flowered; leaf linear, 8-12 in. long 



Limodorum. p 139 



b Stalk usually i-flowered 420 



420 a Leaves ovate, ^-3 in. long Pogonia. p 139 



b Leaves linear, 4-6 in. long Arethusa. p 139 



421 a Ovary inferior 422 



b Ovary superior 424 



422 a Flowers % in. or less broad Sisyrinchium. p 138 



b Flowers i in. or more broad 423 



423 a Flowers orange-yellow ; perianth parts all spreading 



Gemmingia. p 138 

 b Flowers blue, violet, or purple Iris, p 137 



424 a Flowers in a solitary head terminal on the stalk; leaves 



all basal Eriocaulon. p 132 



b Flowers not in a solitary terminal head 425 



425 a Plants with an onion-like odor A Ilium, p 133 



b Plants not with an onion-like odor 426 



426 a Pistils more than i to each flower 427 



b Pistil i to each flower 428 



427 a Flowers in panicles Alisma. p 112 



b Flowers in whorls of 3 Sagittaria. p 112 



428 a Flowers blue, purple, or rose colored 429 



b Flowers not colored as in a 430 



429 a Flowers 1-2 in. broad, subtended by leaf-like bracts 



Tradescantia. p 132 

 b Flowers Vi-Vz in. broad Streptopus. p 136 



430 a Flowers about }4 in. or less broad 431 



b Flowers % in. or more broad 432 



431 a Both basal and stem leaves present; flowers in wand- 



like racemes Chamaelirium. p 133 



b Only stem leaves present; flowers in panicles or short 



racemes Vagnera. p 135 



52 



