Trees of the North ern United States L'W 



54. Seed, which may he niistaLlccn for a iiiit, not sliowing 



a style, large and shining; capsule si^litting into H 

 valves. Aesculus. (40). 



—55— 



55. Fruit a pome, the carpels enclosed by an adnate, perigy- 



notts disk or hypanthium. 56. 

 55. Fruit a berry, or berry-like, with several seeds. 60. 



55. Fruit a drupe, or drupe-like, with a stone or pit and with 



1 or rarely 2 seeds. G6. 



56. Ripe carpels of the pome papery or leathery. 57. 



56. Ripe carpels bony. Crataegus. (26). 



57. Pome small and berry-like. 58. 



57. Pome large, fleshy like the apple. 59. 



58. Pome scarlet when ripe, cavities not more than 5. 



Sorbus. (21). 



58. Pome purplish-red to pnrplish-blue when ripe, cavities 



usually 10. Amelanchier. (25). 

 5f). Seeds not more than 3 in each cavity; pome tapering 

 into the peduncle; flesh with grit-cells. Pyrus. (22). 



59. Seeds not more than 3 in each cavity; pome sunk in 



at both ends, its flesh w^ithout grit-cells. Malus. (23). 



59. Seeds many in each cavity, flesh of pome hard. 



Cydonia. (24). 



60. Berry large, very much elongated, green with yellow 



pulp and large brown seeds. Asimina. (14). 



60. Berry ovoid or globose. 61. 



61. Berry about 1 in. in diameter, reddish-yellow, with 



4-12 large, flat, hard seeds and with the enlarged 

 calyx at the base. Diospyros. (70). 



61. Berry not over § in. in diameter. 62. 



62. Fruit inferior, showing scars or parts of the perianth 



and stamens at the tip. 63. 



62. Fruit superior, showing only the style at the tip, w^ith 



scars or perianth parts if present at the base. 64. 



63. Fruit scarlet, cavities 5. Sorbus. (21). 



63. Fruit purplish-red to purplish-blue, cavities usually 



10. Amelanchier. (25). 

 6:;. Fruit l)lack, small, cavities 5. Aralia. (78). 



64. Fruit really a berry-like blue cone, showing the carpel 



tips on the sides, on close inspection. Juniperus. (11). 



