ROSACEAE
SUMMER KEY TO THE SPECIES OF PYRUS
| a. | Leaves simple; fruit a light green pome an inch or more in diameter; branches contorted, bearing many short, spur-like branchlets. | P. coronaria, p. [145]. |
| aa. | Leaves compound; fruit berry-like, 1/4 inch in diameter, bright red; branches not contorted, not bearing many short, spur-like branchlets. | P. americana, p. [147]. |
WINTER KEY TO THE SPECIES OF PYRUS
| a. | Bundle-scars 3 or in 3 compound, but distinct groups; buds 1/8-1/4 inch long; branches contorted, bearing many short, spur-like branchlets; fruit a pome an inch or more in diameter, light green. | P. coronaria, p. [145]. |
| aa. | Bundle-scars 4-many in a single U-shaped line, not forming 3 distinct groups; buds about 1/2 inch long; branches not contorted, not bearing many short, spur-like branchlets; fruit berry-like, 1/4 inch in diameter, bright red. | P. americana, p. [147]. |
Sweet Crab. American Crab