134 ROCHESTER ACADEMY OF SCIENCE. 



usually lo ; anthers small, dark rose color ; styles 2 or 3, usually 2, 

 Fruit on long slender puberulous pedicels, in wide many-fruited droop- 

 ing clusters, subglobose to short-oblong, full and rounded at the ends, 

 scarlet, lustrous marked by occasional large pale lenticels, i 1-2 cm. 

 in diameter ; calyx sessile, with a narrow deep cavity, the lobes elon- 

 gated, glandular-serrate, dark red on the upper side near the base, 

 usually erect and incurved, mostly persistent on the ripe fruit ; fiesh 

 when fully ripe thick, yellow and sweet ; nutlets usually 2, occasion- 

 ally 3 ; 8-9 mm. long, 6-7 mm. wide, full and rounded at the ends, 

 rounded and conspicuously ridged on the back, with a broad low 

 doubly grooved ridge, the ventral cavities broad and shallow. 



A tree 7-8 m. in height with a tall stem sometimes 2.5 dm. in 

 diameter, covered with light gray bark, becoming rough and scaly 

 near the base, slender branches, the lower horizontal and wide spread- 

 ing, the upper ascending and forming a wide open irregular head, and 

 stout zigzag branchlets dark orange-brown and marked by many 

 large oblong pale lenticels when they first appear, deep red-brown and 

 lustrous on the upper, gray-brown and lustrous on the lower side 

 during their first winter, becoming gray slightly tinged with red the 

 following year, and armed with numerous stout curved chestnut-brown 

 or purple spines 4-5 cm. long, occassionally persistent on old stems. 

 Flowers during the last week of May. Fruit ripens from the first to 

 the middle of October and falls about the end of the month. 



Rochester ; Hagaman Swamp, /o/i/i Dunbar^ October 12, 1901, 

 September 1902, C. S. Sargent, September 30, 1902 ; Rush, New 

 York, near Five Points, M. S. Baxter, June, 1902. 



This handsome tree is named in memory of Chester Dewey, a 

 native of Sheffield, Massachusetts, and for more than thirty years a 

 citizen of Rochester where he was Principal of the Rochester Collegiate 

 Institute and subsequently professor of chemistry and natural philos- 

 ophy in the University of Rochester, By botanists he will be remem- 

 bered by his studies of the genus Carex, commenced in 1824, 

 by his History of the Herbaceous Plants of Massachusetts, prepared 

 under the auspices of that state, and by his Catalogue of Plants and 

 Time of Flowering in and about the City of Rochester for the year 

 184T, published by the Regents of the University of the State of New 

 York. 



ANTHERS YELLOW. 



Stamens 10. 



