1905.] NATURAL SCIENCES OF PHILADELPHIA. 



615 



minute pale lenticels, light reddish-brown when they first appear, light 

 red-brown and lustrous during their first year and grayish-brown the 

 following season, and armed with numerous slender straight or slightly 

 curved red-brown shining spines 3-5 cm. long, becoming branched on 

 old stems and branches and sometimes 7 cm. long. 



Berks county: Fields, fence-rows and borders of woods in rich 

 gravelly soil, Kutztown and near West Lockport, C. L. Gruher (Nos. 6 

 and 190), May, 1901, May and September, 1904. 



Mr. Gruber calls attention to the fact that on this species " a number 

 of small leaves are found distinct in shape from the larger ones. These 

 are 2-3.5 cm. long and wide; broadly ovate, rhombic, fan-shaped, or 

 nearly ovate, sometimes ovate, rarely suborbicular ; base widely obtuse 

 to broadly cuneate; apex obtuse, abruptly acute, or rarely almost 

 rounded; lower portion serrate often till near the petiole, the portion 

 above the basal sides doubly serrate, cut-serrate, or slightly lobed." 



Cratoegus perlevis (Ashe, Jour. Elisha Mitchell Sci. Soc. Vol. XX, 

 p. 48. 1904), known only from a single plant near Sacony creek in 

 the neighborhood of Kutztown (C. L. Gruber, No. 15), is probably 

 only a form of Cratcvgus gruberi, with leaves which are nearly glabrous 

 below while young and smooth and glabrous above at maturity, and 

 with slightly brighter-colored fruit remaining later on the branches 

 in the autumn. 

 8. Crataegus ampla n. sp. 



Leaves ovate to oval, abruptly narrowed, acuminate and usually long- 

 pointed at the apex, full and rounded or rarely cuneate at the broad 

 mostly entire base, coarsely doubly serrate above, with straight glandu- 

 lar teeth, and divided into 4 or 5 pairs of short spreading acuminate 

 lobes, more than half -grown when the flowers open from the 7th to the 

 10th of May and then slightly tinged with red and roughened above by 

 short white caducous hairs and pale and glabrous below, and at matur- 

 ity membranaceous, smooth, glabrous or puberulous, dark yellow-green 

 on the upper and pale or glaucous on the lower surface, 6 to 8 cm. long 

 and 5 to 7 cm. wide, with slender yellow midribs and primary veins, 

 tm-ning yellow sometimes tinged with red in the autumn and falling 

 late in September; petioles slender, grooved on the upper side, slightly 

 wing-margined toward the apex, sparingly glandular above the middle, 

 with stipitate deciduous glands, 2.5-4 cm. in length. Flowers 1.3-1.8 

 cm. in diameter, on slender glabrous pedicels, in compact usually 5-12- 

 flowered corymbs; calyx-tube narrowly obconic, the lobes gradually 

 narrowed, slender, acuminate, entire or rarely sparingly serrate near 

 the base, red toward the apex, reflexed after anthesis; stamens 5-10; 



