A GUIDE TO THE WILD FLOWERS 6i 



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Flowers greenish-yellow or purplish, small, in a terminal 

 raceme. Fruit and ovoid pod that is sometimes broadest 

 towards the tip. Nos. i6o and i6i are also called Tway- 

 blades. 



Stalk of the flower cluster smooth among the flowers ; flowers 



about % in. long Twi-foil, no. 174 



Stalks of the flower clusters sticky-hairy throughout; flowers 

 longer. 

 Leaves narrowed towards the base, usually less than i in. long . . 



Twayblade, no. 175 



Leaves broad at the base, nearly kidney-shaped, mostly more 

 than I in, long Twayblade, no. 176 



174. I'wi-FOiL. Ophrys cor data. Slender, nearly smooth- 

 stemmed orchid scarcely i ft. high. Leaves pointed at the tip, 

 broad at the base, 3^-1 in. long. Flowers purplish, the cluster 

 4-20-flowered, its stalk quite smooth among the flowers. 

 Fruit ovoid, usually drooping. July. Labrador to N. J. and 

 westward, usually in moist woods. Fig. 174. 



175. Twayblade. Ophrys aiistraUs. Somewhat like the pre- 

 ceding but with larger yellowish green flowers with purple 

 stripes, and with the leaves narrowed towards the base. Sum- 

 mer. Ontario and from N. Y. and N. J. to the Gulf, in bogs. 



176. Twayblade. Ophrys convallarioidcs. Like the first but 

 with fewer flowers and the stalk of the cluster sticky-hairy 

 its entire length. Flowers nearly ^ in. long, greenish-yellow. 

 Leaves nearly round, very broad towards the base, about 

 13^ in. long. July. Newfoundland to Vt. west to Alaska and 

 Mich., mostly in the highlands. Fig. 176. 



