FLORA OF VERMONT 91 



Willoughby Mountain and on the headlands of Lake Champlain are 

 found the forms described by Porter as var. monticola (var. Deanei) 

 var. Randii and var. Redfieldii. 



S. Virgaurea, L. var. alpina, Bigel. Mansfield Chin ; Camel's Hump, 

 Brainerd. 



SONCHUS. Sow Thistle 



S. arvexsis, L. Creeping Sow Thistle. Shores and waste places of Cham- 

 plain valley, becoming frequent ; Newfane, Grout. 



S. asper, Vill. Waste places in rich soil ; frequent. 



S. oleraceus, L. Waste places with the preceding. 



TANACETUM. Tansy 

 T. vulgare, L. Roadsides ; frequent. 

 T. vulgare, L. var. crispum, DC. With the species ; frequent. 



TARAXACUM 



T. erythrospermum, Andrz. Red-seeded Dandelion. Shallow soil about 

 ledges ; frequent. Possibly native. 



TV officinale, Weber. (T. Taraxacum, Karst. ) Dandelion. Common. 



TRAGOPOGON 

 T. pratensis, L. Goat's-beard. Waste places ; frequent. 



TUSSILAGO 



T. Farfara, L- Coltsfoot. Moist clay banks and along mountain streams; 

 common. 



XANTHIUM. Cocklebur 



X. Canadense, Mill. Shores of lakes and rivers ; frequent. 



X. Canadense, Mill. var. echinatum, Gray. Burlington and shores of Con- 

 necticut River, Brainerd. 



X. strumaridm, L. Banks of streams and waste places ; frequent. 



