83 



scrlptions will have any doubt that Marshall's description was 

 taken from Miller's! It may be assumed that Marshall had an 

 earlier edition of Miller's Dictionary in which Miller did not use 

 binomial names, and that he was not acquainted with Miller's 

 binomial name. 



How Gray (Syn. Fl. i^: lo. 1884) came to identify Viburnum 

 alnifoliiim Marsh, with Viburnum lantanoides Michx. is not 

 known to me. Torrey & Gray (Fl. N. Am. 2: 18-9. 1841) 

 treated it as an unknown "obscure species." Following Gray, 

 the name has come into universal use for the widely distributed 

 hobble-bush of our northern woodlands. It now seems very 

 evident that both Viburnum alnifoliiim Marsh, and Viburnum 

 americanum Miller must be treated as synonyms of Hydrangea 

 arborescens L. and that for the hobble-bush we must revert to 

 the older long-established use of Viburnum lantanoides Michx. 



New York, N. Y. 



A GREEN FORM OF TRILLIUM SESSILE 

 Leonard K. Beyer 



In the spring of 1926 near Bethany, West Virginia, there were 

 found one and one-half miles east of Bethany College, green 

 trilliums growing in close association with the purple Trillium 

 sessile L. Some of these plants seemed to be intermediate 

 between the green and purple forms, having the yellowish-green 

 petals more or less streaked with purple, while others had not a 

 trace of purple about them. The spring of the present year 

 (1927) the green trillium was found and studied more carefully. 

 Fresh specimens were sent to Dr. O. E. Jennings of the Carnegie 

 Museum, Pittsburgh, Pa., for examination. After careful meas- 

 urements of all the parts had been made and all other characters 

 noted, it was decided that the plant was a green form of Trillium 

 sessile L., but one sufficiently well marked to deserve a form 

 name of its own. The name suggested, therefore, is Trillium 

 sessile forma viridiflorum. 



This green trillium grows very closely associated with the 

 ordinary purple form in rich soil on a moist hillside, facing south- 

 east. The flowers of the two forms open at the same time, 



