OF ARTS AND SCIENCES. 51 



7. Trideiis flavus (L.) Hitchc. 



Abundant in the vicinity of a grist mill in Pelham. Prob- 

 ably introduced. Appearances indicated that it must have 

 persisted for a number of years when first found by the compiler 



in 1899. 



8. Eragrostis Fraiikii (Fisch. Mey. & Lall.) Steud. 



Collected once near the track of a newly constructed elec- 

 tric road. Probably an immigrant from the West or South. 



9- Cypripeclium arietiimm R. Br. 



A few plants of this species were found by the compiler in 

 Laconia, near Doe Mountain, Aug. 30, 1897. The station has 

 been visited several times since, but, though careful search 

 has been made there and in the vicinity, not a single plant has 

 yet been found. A station was discovered in Franklin in 1904 

 by Alexis Proctor, a sharp-eyed boy, while searching for rare 

 plants to be exhibited and studied in school. In 1905 the com- 

 piler visited the station and secured one specimen in fruit for 

 the herbarium of the Institute. 



1C. Cypripeclium parviflorum Salisb., 

 var. pubesceiis (Willd.) Knight. 



Some fifteen years ago a number of these plants were removed 

 to a "wild bed" in a city lot. There they throve and multi- 

 plied for several years. They soon began to manifest a marked 

 change in appearance, becoming smaller and producing smaller 

 flowers in which the lip was strongly compressed laterally, be- 

 came more pointed at the apex and assumed a paler shade of 

 yellow. Several plants of C. parviflorum which were set out 

 at the same time remained constant to the type, the lip neither 

 changing in shape nor losing the bright golden yellow tint 

 exhibited in the native habitat. None of the plants of C. parvi- 

 florum survive. Those of the variety which survive seldom 

 produce flowers. 



