A GUIDE TO THE WILD FLOWERS 57 



Most of the flowers borne along the stem, from among the 



leaves Nodding Pogonia no. 177 



All the flowers terminal 



Bracts of the lower flowers in the cluster 2 or 3 times as long 

 as the flower, see fig. 178 . . Bracted green orchis no. 178 

 Bracts of the lower flowers not so long 

 Spur longer than the lip, see figs. 179 and 181 



Stem round ; flowers greenish yellow 



Green orchis no. 179 



Stem angled ; flowers white or orange yellow 



Gymnadeniopsis no. 180 



Spur about as long as the lip, see fig. 184 



Limnorchis no. 183 



163. ROSE POGONIA. POGONIA, 



Fibrous-rooted bog or swamp orchids with terminal soli- 

 tary flowers and 1-3 leaves. Lip bearded or crested. Fruit an 

 erect, oblong or ovoid pod. 



Rose Pogonia or Snake-moutii. Pogonia ophioglos- 

 soides. Stem 8-15 in. tall. Leaves 1-3, mostly i, borne on 

 the stem, erect, lance-oval, 1-2^ in. long. Sometimes there 

 is also a long-stalked basal leaf. Flower rose-purple, a little 

 drooping, about i in. long, the lip prominently bearded. June. 

 Newfoundland to Fla. and westward. Fig. 163. A related 

 species, Pogonia divaricata, found from N. J. southward 

 along the coast, differs in the lip being crested, and in being 

 greenish with purple stripes. 



164. WHORLED POGONIA. ISOTRIA. 



Woodland orchids with a rootstock and fibrous roots. 

 Leaves in a whorl of 5 at the top. Flowers i or two, greenish- 

 yellow and borne above the whorl of leaves. The flower is 

 crested but spurless. Fruit an oblong erect pod. 

 WiioRLED Pogonia. Isotria vcrticillata. {Pogonia ver- 

 ticillata.) Not over i ft. high. Leaves broadest towards the 

 pointed tip, 1-3 in. long, stalkless. Flower solitary, some- 

 times nodding, on a stalk about }i in. long. The three outer 



