522 J LOR A. 



v 

 surfaces, especially along the veins, calyx and pedicels pubescent. Leaves broadly 

 ovate, or nearly orbicular, narrowed, or some of them somewhat truncate at the base, 

 sharply and unequally serrate, subacute, 6-10 cm. long ; petioles 2-3 cm. long, 

 mostly a little shorter than the pedicels; young fruit very pubescent; mature fruit 

 subglobose, green to yellow, I cm. or rather more in diameter, green. Pa. to 

 N. Car., Ala. and Mo. May. 



25. Crataegus campestris Britton. Mature leaves firm, densely and finely 

 pubescent and prominently straight-veined beneath, dull and with short scattered 

 hairs above, 6-9 cm. long and nearly as wide, sharply and somewhat irregularly 

 serrate. Thorns stout, 4-6 cm. long; pedicels slender, pubescent ; fruit globose, 

 1 -1.5 cm. in diameter, pubescent when young. Mo. and Kans. 



26. Crataegus tomentdsa L. Pear-thorn. Pear Haw. (I. F. f. 2002.) 

 A shrub or small tree. Spines stout, 2-6 cm. long; leaves petioled, broadly oval 

 or ovate-oval, acute or acutish at the apex, narrowed or cuneate at the base, 

 sharply dentate or somewhat lobed, not glandular, slightly scabrous above, pubes- 

 cent, especially along the veins beneath, 5-13 cm. long; twigs, petioles and calyx 

 tomentose-pubescent; flowers about 12 mm. broad ; calyx-lobes lanceolate, usually 

 incised; styles 3-5; fruit dull red, oval to oval-pyriform, over 1 cm. long. In 

 thickets, Ont. to N. J., Ga., Mich, and Mo. May-June. 



27. Crataegus Chapmani (Beadle) Ashe. Chapman's Thorn. A small 

 tree, similar to C. tomentosa, but the leaves smaller and thicker in texture; flowers 

 about 1.5 cm. wide; fruit smaller, short-oval, 1 cm. high or less, bright red. Va. 

 to Ga. and Mo. May-June. 



28. Crataegus pyriformis Britton. Pear-fruited Thorn. Twigs light 

 gray. Leaves broadly oval or obovate-oval, dull, 6-8 cm. long, when mature 

 glabrous above, pubescent, especially on the veins beneath, rather finely serrate 

 nearly all around, not lobed, the blade decurrent into the petiole; pedicels slender; 

 fruit pyriform, about 1 cm. long. Monteer, Mo., B. F. Bush, 1899. 



29. Crataegus flava Ait. Summer or Yellow Haw. (I. F. f. 2003.) A tree, 

 with maximum height of about 7 m., usually very thorny. Leaves obovate, petioled, 

 irregularly glandular-dentate at the apex, narrowed or cuneate and often entire at 

 the base, 1-4 cm. long, pubescent on both sides or at length glabrate; pedicels and 

 calyx pubescent; flowers 1-2 cm. broad; styles commonly 5; fruit globose or some- 

 what pyriform, I— 1 .5 cm. in diameter. In sandy thickets, Va. to Fla., Mo. and 

 Tex. April-May. 



30. Crataegus unifiora Muench. Dwarf Thorn. (I. F. f. 2004.) A shrub, 

 or sometimes a small tree. Spines numerous, slender, 2-5 cm. long; leaves obo- 

 vate, coriaceous, nearly sessile, obtuse and crenate at the apex, cuneate and entire 

 at the base, 1-4 cm. long, more or less pubescent, or glabrate and at length shining 

 above; twigs, pedicels and calyx pubescent; flowers 8-10 mm. broad; calyx-lobes 

 lanceolate, deeply incised, glandular; styles commonly 5 ; fruit globose or pyriform. 

 1-1.6 cm. in diameter, yellow. In sandy soil, S. N. Y. to Fla., W. Va., Mo. and 

 La. April-May. 



31. Crataegus Vailiae Britton. Vail's Haw. (I. F. f. 2005.) A shrub, 

 the branches stout, light gray; thorns slender. Leaves oval, 2-8 cm. long, short - 

 petioled, pubescent on lx>th sides, but becoming glabrate and slightly shining above, 

 sharply serrate, sometimes slightly 3 -lobed; stipules narrow, glandular; corymbs 

 2-6-flowered; pedicels and calyx densely pubescent; calyx-lobes lanceolate, 8- 

 12 mm. long, deeply incised, glandular, reflexed in fruit; pome glol>ose, yellowish 

 green, 8-10 mm. in diameter. In thickets, Va. and N. Car. to Mo. May-June. 



7. COTONEASTER Medic. 



Shrub-, with stipulate coriaceous leaves, and small white cymose or rarely soli- 

 tary flowers. Calyx-tube adnate to the ovary, the limb 5-lobed. persistent. Petals 

 5, scarcely clawed. Stamens numerous. Ovary 2-5-celled or of 2-5 carpels, 



separate at the summit; style- 2 5; ovules 2 in each cavity or carpel, alike, erect. 

 Pome ovoid, globose or top-shaped, the carpels bony when mature. [Name neo- 

 Latin. Quince-star or Star-quince. ] About ao species, natives of the Old World. 



1. Cotoneaster Pyracantha (L.) Spach. EVERGREEN or Fire Thorn. 

 l'Yk \' w I'll. (I. F. f. 2006.) A shrub. Spines slender, I 2.5 cm. long; leaves 

 evergreen, idaluous, oval or slightly oblaneeolate, crenulate, obtuse at the apex, 



