468 



ORCHIDACEAE. 



3. Pogonia divaricata (L.) R. Br. Spread- 

 ing Pogonia. (Fig. 1116.) 



Arethusa divaricata L,. Sp. PI. 951. 1/53- 



Pogonta divaricata R. Br. in Ait. Hort. Kew. Ed. 2, 5: 

 203. 1813. 



Stem i-2 high, bearing a leaf near the middle, 

 and a foliaceous bract near the flower. Leaf lanceo- 

 late, or narrowly elliptic, obtuse, clasping, z'-tf 

 long; flower terminal, solitary, about i' long; 

 sepals linear, longer and narrower than the petals, 

 diverging dark colored; petals flesh -color, lanceo- 

 late, narrowed at the apex, lip as long as the petals, 

 3-lobed, crenulate or wavy -margined, greenish, 

 veined with purple, crested, but not bearded, the 

 upper lobe long. 



In swamps, southern New Jersey to Florida and Ala- 

 bama. Ascends to 4000 ft. in North Carolina. Reported 

 from Wisconsin. Juty. 



4. Pogonia verticillata (Willd.) Xutt. 

 Whorled Pogonia. (Fig. 1117.) 



Arethusa verticillata Willd. Sp. PI. 4: 81. 1805. 

 Pogonia verticillata Nutt. Gen. 2: 192. 1818. 



Stem io / -i2 / high, from long flesh}' roots, 

 bearing a whorl of 5 leaves at the summit. 

 Leaves obovate, abruptly pointed at the apex, 

 sessile, *'-$' long; flower solitary, erect or de- 

 clined; peduncle 6 // -8 // long, in fruit usually 

 equalling or exceeding the capsule; sepals lin- 

 ear, i^ / -2 / long, about i" wide, spreading, 

 dark purple; petals linear, erect, obtuse, green- 

 ish yellow, about io // long; lip 3-lobed, crested 

 along a narrow band, the upper part expanded, 

 undulate; capsule erect, i' or more long. 



In moist woods, Ontario to Wisconsin. Indiana 

 and Florida. Ascends to 4500 in Virginia. Ma} - - 

 June. 



5. Pogonia affinis Austin. Smaller 

 Whorled Pogonia. (Fig. 1118.) 



Pogonia affinis Austin; A. Gray. Man. Ed. 5, 507. 

 1867. 



Smaller than the preceding species, stem S'- 

 ic/ high. Leaves in a whorl of 5 at the summit, 

 i '-2' long; flowers 2 or solitary, greenish yellow; 

 peduncle i"-\" long, much shorter than the 

 ovary and capsule; sepals equalling the petals, 

 or but little longer, somewhat narrowed at the 

 base; lip crested over nearly the whole face and 

 lobes; capsule erect, i / long or less. 



In moist woods, Connecticut to southern J< 

 York and New Jersey. Rare and local. The species 

 is imperfectly known. Our figure is taken from 

 Mr. Austin's original sketches. June. 



