242 



POMACEAE. 

 Crataegus viridis L,. Southern Thorn. (Fig. 1996.) 



Crataegus viridis L. Sp. PI. 4?6._ 1753. 

 ^. &. 



[Vox,. II. 



C. arborescens Ell. Bot. S. C. & Ga. i: 550. 1821. 



A small tree with maximum height of about 

 30 and trunk diameter of 18', often without 

 spines. Leaves slender-petioled, varying from 

 ovate to lanceolate or somewhat obovate, gla- 

 brous on both sides or pubescent in the axils of 

 the veins beneath, sharply serrate and usually 

 somewhat lobed, mostly acute at each end, i'- 

 3' long; corymbs many-flowered; pedicels and 

 calyx glabrous or little pubescent; flowers 6"- 

 9" broad; calyx-lobes lanceolate; styles com- 

 monly 5; fruit globose or oval, about 3" high, 

 persistent into the winter. 



Valley of the Mississippi from Missouri to Louisi- 

 ana and Texas, east to South Carolina and Florida. 

 Wood hard, reddish-brown; weight per cubic foot 

 40 Ibs. March-April. 



Crataegus viridis nitida Engelm. 

 Leaves more shining; fruit larger, glaucous. 

 Missouri and Arkansas. Perhaps a distinct species. 



7. Crataegus apiifdlia (Marsh.) Michx. Par- 

 'sleyHaw. Parsley-leaved Thorn. (Fig. 1997.) 



Mespilus apiifolia Marsh. Arb. Am. 89. 1785. 

 Crataegus apiifolia Michx. Fl. Bor. Am. i: 287. 



1803. 



A shrub or small tree, reaching a maximum height 

 of about 25 and trunk diameter of about 3'. Spines 

 stout, i'-2' long; leaves slender-petioled, broadly 

 ovate or nearly orbicular in outline, pubescent on both 

 sides at least when young, obtuse or acutish at the 

 apex, truncate or slightly cordate at the base, %'-i%' 

 long, thin, pinnately and deeply 5-7-cleft, the lobes 

 sharply serrate; corymbs numerous, several-flowered, 

 the slender pedicels and calyx pubescent; flowers 4"- 

 6" broad; calyx-lobes linear, glandular; styles 1-3; 

 fruit red, oval, 2"-3" long. 



In thickets. Virginia to Florida, west to Missouri and 

 Texas. Wood hard, bright reddish-brown; weight per 

 cubic foot 46 Ibs. March-April. 



8. Crataegus coccinea L,. Scarlet Thorn 

 or Haw. Red Haw. (Fig. 1998.) 



Cralaegus coccinea L. Sp. PI. 476. 1753. 



A shrub or sometimes a small tree, reaching a maxi- 

 mum height of about 30 and trunk diameter of i. 

 Spines stout, i j J^ / -2 / long; leaves slender-petioled, 

 broadly ovate or orbicular, acute or acuminate at the 

 apex, mostly truncate or subcordate at the base, thin, 

 or becoming firm, very sharply incised and serrate^ 

 the teeth glandular- tipped, glabrous or very nearly so 

 beneath, 2 / ~3 / long; pedicels, bractlets and calyx 

 somewhat glandular-pubescent; flowers numerous, 

 8 // -i4 // broad; calyx-lobes lanceolate; styles 3-5; fruit 

 red, globose or oval, 5 // -8 // in diameter, rarely hairy. 



Thickets, Newfoundland to Manitoba, south to Florida 

 and Texas. Wood hard, reddish-brown; weight per 

 cubic foot 53 Ibs. April-May. 



Crataegus coccinea flabellata (Spach) Britton, Mem. Torr. Club, 5: 183. 1894. 

 Mespilus flabellata Spach, Hist. Veg. 2: 63. 1834. 



Leaves cuneate -narrowed at the base, very sharply incised-serrate, thick and shining when old. 

 Quebec and New England to the .Northwest Territory. Probably specifically distinct. 



