TREES AND SHRUBS. 



CRATAEGUS MAGNIFOLIA, Saeg. 



Crataegus magnifolia, n. sp. 



Glabrous with the exception of a few hairs in the axils of the veins. Leaves broadly ovate, 

 short-pointed and acute at the apex, abruptly concave-cuneate or rounded at the entire base, 

 coarsely doubly serrate above, with straight glandular teeth, and very slightly lobed ; nearly half 

 grown when the flowers open and then thin and yellow-green, and at maturity thin, blue-green, 

 paler on the lower than on the upper surface, from 6 to 7.5 centimetres long and from 5 to 6.5 

 centimetres wide, with slender yellow midribs, and thin primary veins arching obliquely to the 

 point of the lobes; petioles slender, slightly wing-margined at the apex, from 3 to 4 centimetres 

 in length. Flowers from 1.6 to 1.8 centimetres in diameter, on slender pedicels, in small very 

 compact from four to ten, usually six or seven-flowered corymbs, with linear glandular-serrate 

 bracts and bractlets fading brown and often persistent until the flowers open, the short lower 

 peduncles from the axils of upper leaves ; calyx-tube broadly obconic, the lobes gradually nar- 

 rowed from wide bases, acuminate, often entire or occasionally minutely dentate, reflexed after 

 an thesis ; stamens twenty; anthers pale yellow; styles three or four, surrounded at the base by a 

 broad ring of pale tomentum. Fruit on short erect or spreading stems, in few-fruited clusters, 

 subglobose, five-angled at the base, gradually narrowed and rounded at the apex, green, or dull 

 red, with dark blotches when fully ripe, and about 1.5 centimetres in diameter; calyx promi- 

 nent, with a wide shallow cavity, and spreading lobes deciduous from the ripe fruit ; flesh thin, 

 green, dry, and hard ; nutlets from two to five, usually three or four, narrowed and acute at the 

 ends, or when two rounded at the base, irregularly ridged on the back, with a high narrow or a 

 broad and deeply grooved ridge, from 6.5 to 7 millimetres long and from 4 to 4.5 millimetres 



An arborescent shrub, from 3 to 4 metres high, with small intricately branched stems covered 

 with pale scaly bark, small ascending branches forming a narrow irregular head, and very slender 

 nearly straight branchlets light orange-green when they first appear, becoming light chestnut- 

 brown or olive-brown and marked by pale dots in their first season, and dark red-brown the fol- 

 lowing year, and armed with occasional very slender nearly straight purplish shining spines from 

 2 to 3 centimetres long. Flowers appear at the end of April. Fruit ripens in October. 



Thickets near Webb City, Jasper County, Missouri, E. J. Palmer (No. 26 type), April 30 and 

 September 25, 1905. 



C. S. S. 



