﻿Bicknell: Ferns and flowering plants of Nantucket 37 



bank on the west side of the pond. Less than one hundred feet 

 distant the bluff from top to bottom was clothed with a dense 

 growth of the common milkweed, also in full bloom. 

 Asclepias pulchra Ehrh. 



Common in low grounds. First open flowers July lo, 1912; 

 in full flower August 15, 1906; no flowers left August 27, 1904. A 

 number of plants were seen having some of the leaves in whorls of 

 three and of four. 



A well-marked variety of this milkweed is common on Nan- 

 tucket, perhaps even more so than the ordinary form. It is 

 characterized by denser white-tomentose pubescence, shorter 

 internodes and much broader ovate to ovate-oblong, often cordate 

 leaves, sometimes as much as 8 cm. in width. 

 Asclepias amplexicaulis J. E. Smith. 



Not an abundant, but a characteristic plant of Nantucket 

 widely scattered over the dry plains and commons. Umbels of 

 close buds June 17, 1910; large flower buds June 30, 1912; first 

 flowers July 9, 1912. 

 Asclepias exaltata (L.) Muhl. 



Rare. A single small plant was found near Almanac Pond, 

 September 21, 1907. The species was not seen again until July 8, 

 191 2, when a cluster of tall plants in full flower was found in a 

 hillside thicket in Squam near Eatfire. 

 Asclepias syriaca L. 



Common, often forming large colonies in fields and along 

 banks and roadsides. A few inches high May 30, 1909; flower 

 buds appearing June 20, 1908; umbels of large buds June 15, 1910; 

 first flowers June 27, 1910, June 29, 1912. 



CONVOLVULACEAE 

 *Ipomea purpurea (L.) Lam. 



Occasional in waste places. In flower August 11, 1906, Sep- 

 tember 18, 1908. 

 * Convolvulus sepium L. 



In a cultivated field near Miacomet Pond June 3, 1909. Not 

 in flower, but unmistakably the introduced European plant. 



