23. Pogonia ophioglossoides (L.) Ker. ROSE POGONIA.
      Rare, in bogs.
      Flowers mid- to late May.

24. Spiranthes cernual (L.) Richard. COMMON LADIES TRESSES.
      Common in moist meadows and clearings.
      Flowers through September.

25. Spiranthes gracilis (Bigel.) Beck
      Occasional in dry thickets in the hills.
      Flowers mid-July to early September.

26. Spiranthes lucida (H.H.Eat.) Ames.
      Found by T. J. Oberlin June 11, 1874, probably along Punchy Run, south of Grill.

27. Spiranthes tuberosa (S. beckii) Raf.
      Dry grassy slope of Gibraltar Hill, southwest of Gibraltar.
      Flowers late August to early September.
 
 

                                                SUGGESTED REFERENCES

BRITTON, N. L. and H. C. BROWN. 1913. Illustrated Flora of the Northern United States.
 2nd ed. Charles Scribner's Sons.

CORRELL, DONOVAN S. 1951. Native Orchids of North America, North of Mexico.
 Chronica Botanica Co.

DARWIN, CHARLES. 1898. The Various Contrivances by which Orchids are Fertilized by
 Insects. D. Appleton and Company.

FERNALD, M. L. 1950. Gray's Manual of Botany. 8th ed. American Book Company.

GIBSON, WILLIAM HAMILTON. 1901. Blossom Hosts and Insect Guests. Newson and
 Company.
 
 

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