BILTMORE BOTANICAL STUDIES 



20 



long : corymbs densely white-tomentose, 3-7 -flowered : pedicels 

 8 mm -i.5 cm long, tomentose : calyx obconic, pubescent or tomentose, 

 the divisions 5-6 nim long, glandular, serrate, coloring with the fruit : 

 stamens normally 20 : styles 3-5, surrounded at the base with pale 

 hairs : petals nearly orbicular, 6-9 mm in diameter, with a short 

 broad claw at the base : fruit, which ripens in the vicinity of 

 Aiken, South Carolina (type locality), the last of July or early in 

 August, red, subglobose or oval, 8-i2 mm long, 7-io mm wide, 

 sparingly pubescent or glabrate : nutlets 3-5, hard and bony, 

 6~7 mm long, 2.5-3.5 mm measured dorso-ventrally, the back nearly 

 smooth or slightly ridged, the lateral faces nearly plane. 



Crataegus disbar belongs to the group of which C. michauxi Pers. ,' 24 and 

 C. senta^ are types. From the former it may be distinguished by the serrate 

 and incised borders of the leaf blades, while from the last-named species it 

 differs in the size of the fruits and nutlets, time of ripening and by the out- 

 line and character of the leaves. The proposed species has been collected in 

 sandy soil at Aiken, South Carolina, and in similar situations at Trenton in the 

 same state and at Augusta, Georgia. It is one of the earliest of the autumnal 

 fruiting thorns to ripen at the stations mentioned. 



The type sheet is preserved in the Biltmore Herbarium 



Crataegus lassa n. sp. 



A tree occasionally attaining the height of 5 m , with a short, 

 straight trunk clothed with rough and frequently furrowed bark, 

 or more often a large much-branched shrub with one or several 

 stems : bark of the trunk and larger branches dark ashy-gray or 

 much blackened ; of the slender, zigzag and drooping branchlets, 

 which are frequently armed with short spines, gray tinged with 

 reddish-brown: leaves cuneiform, i.5-4.5 cm long, including the 

 margined petiole, 7 min -2 cm wide, or on the shoots more dilated 

 or frequently broader than long and with rounded bases ; they 

 are pubescent at the time of unfolding, soon becoming glabrate, 

 except along the petiole, midrib and in the axils of the promi- 

 nent, ascending veins, either rounded at the apex and with a 

 short, abrupt point, or nearly truncate with one or more short 

 points or shallow lobes, the borders roughened with many black- 

 colored sessile glands : flowers, which expand in the vicinity of 



2* Syn. Plant. 2:38, 1807. 

 26 Bot. Gaz. 30:341, 1900. 



