87 
the supposition. Seeds of the two species collected at the same 
time and the same place, were fertile; the plants of the variety 
seemed to be healthy and strong. 
If further observation should prove that the seeds of this plant 
are always infertile, this, taken with the place of growth, and the 
intermediate character, would be evidence enough, at least to 
suggest that S. serotina, Ait. var. gigantea, A. Gray is S. serotina, 
Ait. X S. Canadensis, L. 
Cornell University. W. W. ROWLEE. 
Aristolochia clematitis. 1 have recently received some speci- 
mens of this plant, collected near the centre of this county, with 
the information that it threatens to become a pest. Gray’s 
Manual, 6th Edition, gives but one locality, that near Ithaca, N. Y. 
It would be interesting to know, if attainable, the history of 
the introduction of this plant in each locality, and also the date 
when first noticed. 
Melia Azederach. A specimen of this tree which had been 
grown asa pot-plant for about four years, was set in the open 
ground in the spring of 1888, and has since been thriving with- 
out any protection other than that of situation, producing both 
flowers and fruit the past two seasons. It stands near the south- 
west corner of the house, and is sheltered from all northerly 
winds. The locality is near Chester, or a little south of latitude 
40°. 
Of course our last two winters have been very mild, but has 
it ever been known to survive the winter so far north in any 
other locality ? 
Delaware Co., Pa. WILLIAM TRIMBLE. 
Flaveria Contrayerba, Pers. This plant was collected by 
Mr. B. F. Bush near Courtney, Mo., far north of its recorded 3s 
range. In all its gross aspect it agrees fully with the herbarium 
specimens under this name. Yet, the heads are five-to-eight- 
flowered, not “three-to-five-flowered ;” and the ligule does 
slightly exceed the disk flowers. If the characterization of this — a 
species in the Synoptical Flora is absolute, then this must be a 
different species. But since the outward appearance of the plant 
‘from Missouri agrees so fully with Flaveria Contrayerba, and with 
