238 THE PLUMS OF NEW YORK. 



margin finely serrate or crenate, eglandular; petiole nine-sixteenths inch long, slender, 

 tinged red, glandless or with from one to four globose or reniform, greenish-yellow glands 

 on the stalk. 



Blooming season early and of medium length; flowers appearing before the leaves. 

 white; borne in thin clusters on lateral buds and spurs, singly or in pairs; pedicels 

 long, glabrous, greenish; calyx-tube green, campanulate, glabrous; calyx-lobes obtuse, 

 with numerous hair-like glands, nearly glabrous, erect; petals roundish-ovate, entire, 

 not clawed; anthers yellowish; filaments short; pistil glabrous except at the base, 

 much longer than the stamens. 



Fruit early, season short; one and three-quarters inches in diameter, roundish, 

 halves equal; cavity of medium depth and width, abrupt, regular; suture a line; apex 

 roundish; color light or greenish-yellow, more or less blushed with red on one side, be- 

 coming red at maturity, mottled, with thin bloom; dots numerous, small, whitish, 

 conspicuous only where the skin is blushed; stem slender, five-eighths inch long, glabrous, 

 detaching easily from the fruit; skin thin, tough, adhering; flesh yellowish, very juicy, 

 fibrous, tender, melting next the skin but firmer at the center, sweet except near the 

 pit; good in quality; stone adhering, three-quarters inch by five-eighths inch in size, 

 roundish-oval, flattened, blunt but with a small, sharp tip, rough; ventral suture narrow 

 and rather conspicuously winged; dorsal suture grooved. 



HAMMER 



Prunus hortulana mineri X Prunus americana 



i. Cornell Sta. Bui. 38:79. 1892. i. la. Hart. Soc. Rpt. 275, 448. 1893. 3- Ibid. 334. 1894. 



4. Wis. Sta. Bui. 63:24, 39. 1897. 5. Colo. Sta. Bui. 50:36. 1898. 6. la. Sta. Bui. 46:274. 1900. 



7. Waugh Plum Cult. 150. 1901. 8. Ont. Fr. Gr. Assoc. 144. 1901. 9. Ga. Sta. Bui. 67:274. 1904. 

 10. S. Dak. Sta. Bui. 93:18. 1905. u. Ohio Sta. Bui. 162:254, 255. 1905. 



Hammer is one of the best native plums. On the Station grounds 

 the trees of this variety make the best orchard plants of any of the native 

 varieties, being large, vigorous, shapely and hardy, falling short only in 

 being a little uncertain in bearing. The fruits are good in quality, hand- 

 some in appearance and keep and ship well, but crack badly in unfavor- 

 able weather and, according to some writers, are quite subject to brown- 

 rot. Hammer extends the season of the Americana plums considerably, 

 for though a hybrid, it may best be ranked with the Americanas, and is 

 well worth planting in home orchards in New York, where the native plums 

 are too seldom found ; in particular, this variety can be recommended for 

 the colder parts of this State where Domestica and Insititia plums are not 

 hardy. 



Hammer is one of H. A. Terry's numerous productions and was grown 

 from a seed of the Miner evidently fertilized by an Americana. The blood 



