198 Rhodora [NOVEMBER 
stout nearly straight bright red-brown shining spines 3-4 cm. long; 
usually smaller and sometimes shrubby in habit. 
Burlington, Vermont, W. W. Eggleston (no. 3475 type! ), October 
1903, May 1904, (no. 3472) October 1903, 4. W. Edson, May 1900. 
Putney, Vermont, W. W. Eggleston (nos. 3391 & 3392), May and 
September 1903, W. H. Blanchard (no. 46), May and September 
1903; Westminster, Vermont, W. H. Blanchard (no. 49), Septem- 
ber 1902, May 1903; Blanchard and Sargent, May 1905. North 
Walpole, New Hampshire, W. H. Blanchard (no. 48), May and 
September 1903. 
This handsome and widely distributed species is named in mem- 
ory of James Watson Robbins (1801-1879) in his time “the most 
critical student of the botany of New England and the northern 
Atlantic States.” 
Crataegus levis,n.sp. Leaves ovate to oval, acute or acuminate, 
abruptly cuneate or rounded at the entire base, finely doubly serrate 
above, with straight or incurved glandular teeth, and slightly divided 
above the middle into 4 or 5 pairs of short acuminate lobes, when 
the flowers open during the last week of May thin, glabrous with the 
exception of a few soft hairs on the light yellow-green very smooth 
upper surface and pale or glaucous and glabrous below, and at 
maturity thin, but firm in texture, glabrous, blue-green above and 
pale blue-green. below, 3.5-4.5 cm. long and 3-3.5 cm. wide, and 
on vigorous shoots sometimes 6 cm. long and, 4-5 cm. wide, with 
very slender yellow midribs, and thin primary veins arching 
obliquely to the points of the lobes; petioles slender, nearly terete, 
glandular while young, with occasional minute dark red glands, often 
tinged with red early in the season, 2-3 cm. in length. Flowers 
1.2—1.4 cm. in diameter, on stout elongated glabrous pedicels, in 
usually 5-8-flowered corymbs; calyx-tube narrowly obconic, glabrous, 
the lobes gradually narrowed from wide bases, short, acuminate, 
obscurely serrate near the middle, glabrous, reflexed after anthesis ; 
stamens 7—10; anthers deep rose color; styles 3 or 4. Fruit ripening 
the end of September, on drooping pedicels, in few-fruited clusters, 
obovate, full and rounded at the apex, gradually narrowed to the 
slender base, dull purple, very glaucous, r.1-1.3 cm. long and 7-8 
mm. wide; calyx little enlarged, with a wide shallow cavity, and 
spreading or reflexed serrate lobes dark red on the upper side 
toward the middle, their tips often deciduous from the ripe fruit ; 
flesh thin, yellow, rather juicy ; nutlets 3 or 4, usually 3, narrowed 
and rounded at the base, acute or acuminate at the apex, ridged on 
the back, with a high usually broad ridge, about 7 mm. long, and 4-5 
mm. wide. 
A slender shrub about 2 m. high, with small ascending stems and 
