214 



22. Crataegus Phaenopyrum (Linnaeus fils) Medicus. WASH- 

 INGTON THORN. SCARLET HAW. (Crataegus cordata Alton). Plate 98. 

 Bark grayish-brown, scaly; spines numerous, slightly curved, 2-5 cm. 

 (3^-2 inches) long; leaves ovate-triangular, 2-8 cm. (^-3 inches) long 

 and wide, simply or doubly serrate, often 3-5 lobed, acute at the apex, 

 rounded to cordate at the base, bright green above, glabrous; petioles 

 slender, 1.5-5 cm. Q^-2 inches) long, glabrous; corymbs glabrous, many- 

 flowered; flowers appear in June, 8-12 mm. (^-^ inch) broad; stamens 

 about 20; anthers pink; styles and nutlets usually 5; calyx lobes del- 

 toid, entire, deciduous; fruit ripens in October or November, depressed- 

 globose, scarlet, 4-6 mm. (%-% inch) thick, nutlets with a bare 

 apex and smooth back, flesh thin, firm. 



Distribution. Virginia to Georgia, Indiana to Arkansas. Moist 

 rich soil. Naturalized in Pennsylvania and New Jersey. Possibly it 

 may be naturalized at the Indiana station. More knowledge of dis- 

 tribution in southern Indiana is needed to settle this question. 



A shrubby tree sometimes 9 m. (30 feet) high, with nearly erect 

 branches and an oblong crown. 



Specimens have been seen from Wayne (Beam). It also occurs in the 

 Wabash Valley. 



Horticultural Uses. This is one of the most desirable thorns for 

 ornamental planting and hedges. Its scarlet autumn foliage and 

 beautiful little scarlet fruit persist for a long time. It is also one of the 

 American thorns long in cultivation, both in Europe and the United 

 States. 



Crataegus albicans Linnaeus. This species was reported for 

 Indiana by Heimlich. 1 



The material at hand is not sufficient to make a satisfactory deter- 

 mination, hence it is omitted in the text. 



According to the treatment of the genus Crataegus in Brit ton and 

 Brown's Illustrated Flora, 2nd Edition, the range of the following 

 species extend into Indiana. 

 Throughout the State In the northern part of the State 



C. Boyntoni. C. Brainerdi. 



In the southern part of the State C. lucorum. 



C. roanensis. 



C. berberifolia . C - beata - 



C. denaria. C - villi P es - 



C. fecunda. C - 



C. ovata. 



'Free. Ind. Acad. Sci. 1917:445:1918. 



