108 THE AMERICAM BOTANIST. 



deep. This bog I believe to be the basin of an old lake 

 which is now filled w^ith soft water3^ mud and covered 

 over with a layer of sphagnum and grass. The perfume 

 of arethusa is delicate and somewhat resembles a mixture 

 of roses and spruce. 



Habenaria lacera, the ragged fringed orchis, attains a 

 great size in this locality, and the spurs are frequently 10 

 lines in length and longer than the ovary. The odor of 

 this species is almond-like. Its habitat is open bogs where 

 it blooms from June 26 to July 18, 



A peculiar little orchid found growing parasiticalh^ on 

 the roots of trees in dry woods is Corallorhiza multifJora 

 the many-flow^ered coral-root. It is scarce in this locality. 

 This species bloomed from June 28 to July 15, and the 

 seeds ripened about September 22. In some of our marsh- 

 es and lowdands grows Habenaria psycodes, the smaller 

 purple fringed orchis. The flowers are very variable in 

 color ranging from mauve, through lilac and violet, to 

 purple. It comes into bloom about July 10. Habenaria 

 hracteata, the long-bracted orchis, is apparently very rare 

 here. It inhabits dryish woods, and appears in flower 

 about July 1. In one open bog in this locality Habenaria 

 tridentata, the small green orchis, is abundant. It blooms 

 from July 15 to 30. This orchid appears to be self-fertil- 

 ized as the pollinia, even in the bud, are never entire, and 

 in some freshly-opened flowers will be found adhering to 

 the labellum as if thej^ had slipped from their sacs. Many 

 of our inconspicuous greenish orchids appear to me to be 

 capable of self-fertilization if the necessary insect does not 

 visit them. 



In some of our swales grows Spiranthes romanzof- 

 ^ana, the hooded lady's tresses. The perfume of this spe- 

 cies is strongly almondy. It blooms from about July 15 

 to August 5. A little plant with most attractive leaves is 

 Goodyera repens, the rattle-snake plantain. It inhabits 

 cedar swamps with a mossj^ bottom, and is apparently 

 scarce here. It appeared in flower on Juh' 20 and the 

 seed was ripe by September 25. 



