22 Joint Bulletin 6 



Regulus calendula calendula, Ruby-crowned kinglet; migrant; com- 

 mon; April 23. 



Hylochichla mustelina, Wood thrush; summer resident; uncommon; 

 May 15. 



Hylochichla fuscescens fuscescens, Veery; summer resident; com- 

 mon; May 4. 



Hylochichla aliciae aliciae, Gray-cheeked thrush; migrant; uncom- 

 mon; May 14. 



Hylochichla ustulata swainsoni, Olive-backed thrush; summer resi- 

 dent; uncommon; May 14. 



Hylocichla guttata pallasii, Hermit thrush; summer resident; com- 

 mon; April 15. 



Planesticus migratorius migratorius, Robin; summer resident; 

 common; March 16. 



Sialia sialis sialis, Bluebird; summer resident; common; March 14. 



THE WHORLED MILKWEED (Asclepias verticillata) 



W. W. Eggleston 



Professor Joseph Torrey's Additions to Oakes' Catalogue of Vermont 

 Plants (Thompson's Appendix to the History of Vermont, 1853) in- 

 cludes "Asclepias verticillata, Brattleboro (C. C. Frost)." Like several 

 other of Frost's plants, of which botanical specimens were not found, 

 this species was listed in "Plants to be Looked For" in the Vermont 

 Flora of 1900 and entirely omitted in the 1915 catalogue. There are 

 very good reasons to believe that it can be found in the lower Con- 

 necticut Valley of Vermont. Tuckerman and Frost, in their Catalogue 

 of Plants Growing Within a Radius of Thirty Miles of Amherst, Mass. 

 (1875) include Asclepias verticillata without comment. Stone's Plants 

 of Franklin, Hampshire and Hampden counties, Mass. (1913) also list 

 the species without special comment. In the Gray Herbarium there is 

 a specimen labelled as follows, "Cliff, Sunderland, Mass., Nov. 1, 1914, 

 F. G. Floyd." No other herbaria has been consulted. It is represented 

 in the Gray Herbarium from many stations in Massachusetts, Rhode 

 Island and Connecticut. It seems to prefer sandy, well drained soil 

 of the plains and the lesser mountains. 



In the western United States the whorled milkweed group is rep- 

 resented by at least three other species. Of these, Asclepias galioides 

 is abundant in Colorado, Utah, New Mexico and Arizona, and has been 



