128 IOWA ACADEMY OF SCIENCES. 



basin irregularly corrugated, sometimes marking core divisions, 

 lined with tomentum; calyx prominent, closed; flesh hard, mod- 

 erately juicy; flavor acid, markedly astringent, slightly bitter; 

 texture breaking; core small, separating easily from flesh; 

 seed smaller than loivensis, season, winter. In character of 

 seed it closely resembles loivensis. The character of flesh 

 is rather more astringent than lowensis, with a little more juice. 

 Description made from specimens received from Dr. Murrell, 

 Ithaca, N. Y. 



PYRUS lOWENSIS BAILEY. 



Pyrus coronaria var. lowensis Wood, Class-book. 333. 1860. 

 Pyrus lowensis Bailey. Am. Gard. 12:473. 1891. 

 A small tree, three to eight inches in diameter, ten to twenty- 

 five feet in height, growing singly or in thickets; when growing 

 singly a spreading tree branched to the ground, when growing 

 in thickets it is more slender, taller and not branched down as 

 when growing singly; bark one-fourth of an inch thick, the 

 outer layer fissured, longitudinally or obliquely, into long, 

 narrow, loose, brownish scales; the branchlets are grayish 

 or brownish in color and quite stout, so differing from those of 

 coronaria which are quite slender; young twigs densely 

 covered with white tomentum, which persists toward the tips 



until the following year; 

 mature leaves, thick,firm, 

 ovate, ovate lanceolate 

 to ovate oblong and tri- 

 angular-ovate, apex ob- 

 tuse or acute, base acute, 

 roundedor oblique, mar- 

 Figure 6. Fruit spur and spine. P. lowensis. g- ^ ^oarscly and bluntly 



toothed, often deeply cut in young growth and frequently 

 toothed at 'right angles to the mid-rib, glabrous above, densely 

 white tomentose below, one to five inches long, one-half to two 

 and one-half inches wide and borne on stout terete slightly 

 grooved, densely tomentose petioles, one-half to two inches 

 long; young leaves thickly covered with tomentum. 



Exceedingly variable in all leaf characters, differing from 

 coronaria in being usually acute at the base, which is scarcely 

 ever or never found in coronaria, tomentose beneath, thicker in 

 texture, bluntly toothed aad borne on decidedly stouter petioles. 

 The flowers differ little from those of coronaria except that the 



