46 



BILTMORE BOTANICAL STUDIES 



Cratcegus sinistra is evidently related to C. engelmanni Sarg, 35 from 

 which, as exemplified by the original specimens from Missouri, it differs in the 

 smaller, oval fruit, the smaller flowers and leaves and more densely and 

 harshly pubescent corymbs and foliage. From C. berberifolia T. & G., 36 the 

 proposed species may be recognized by the fewer stamens and the smaller, 

 less succulent and elongated fruit. 



The type material is preserved in the Biltmore Herbarium. 



Crataegus tetrica n. sp. 



A tree 5-7 111 tall, with a short trunk i-2 dm in diameter, di- 

 viding 1— 3 m above the ground into several spreading or ascend- 

 ing branches, forming an oval, round or occasionally flat-topped 

 head ; or more frequently a large shrub with one or several 

 stems : bark of the trunk or larger stems fissured and scaly, 

 dark brown or dark ashy gray tinged with brown ; of the branches 

 smooth, gray or with mingled tones of brown, the growth of the sea- 

 son pilose-pubescent, becoming glabrous during the latter part of 

 the first or early in the second season, bright reddish-brown marked 

 with numerous small pale lenticels : spines very stout, 1.5— 5 cm 

 long, either curved or straight, dark gray or bright chestnut- 

 brown : winter buds globose or oval, the outer scales of the 

 terminal ones with relatively long cuspidate tips, bright reddish- 

 brown : stipules linear or on the stronger shoots lunate, serrate 

 or dentate with long, divergent cuspidate or glandular teeth, 

 caducous : leaves broadly oval or broadly obovate, 3-7 cm long, 

 including the petiole, 1.5-4. 5 cm wide, rounded at the apex, fre- 

 quently pointed on vigorous shoots, abruptly narrowed at the 

 base and prolonged into pubescent, margined, sometimes glandu- 

 lar petioles 5 mm -i cm long ; they are sharply and irregularly ser- 

 rate, especially above the middle, entire near the base, pubescent 

 on both surfaces at the time of unfolding, becoming glabrous or 

 glabrate and dark green and lustrous on the upper surface, be- 

 low pale green, the pubescence persistent along the midrib, 

 petiole and principal, 4-6 pairs of ascending veins, coriaceous, 

 fading in autumn with tones of yellow, brown and red : the flow- 

 ers, which appear when the leaves are almost or quite fully 

 grown, expand in the vicinity of Nashville, Tennessee (type 

 locality), before the middle of May and are borne in compound, 

 pilose-pubescent 10-20-flowered corymbs: pedicels 5 mm -i.5 cm long, 



3 5 Bot. Gaz. 31 : 2, 1901. 3 6 Flora N. Am. 1 : 469, 1838. 



