Report of the state botanist 1907 77 



2 NUTLETS WITH LONGITUDINAL CAVITIES ON THE 



VENTRAL FACES 



X T03IE\T0SAE 



Fruit pyriforni to subglobose or short-oblong, 1-1.5 cm in diam- 

 eter, lustrous, orange or scarlet; nutlets 2 or 3, usually obtuse at 

 the ends and prominently ridged on the back. 



Leaves thin, with midribs and veins only slightly impressed on 

 their upper surface ; fruit obovate to short-oblong. 



Stamens 20 



Anthers yellow i C. striictilis 



Anthers pink 2 C . f i n i t i m a 



Stamens 10; anthers yellow 3 C. v e n 11 s t u 1 a 



Leaves thick to subcoriaceous or coriaceous on vigorous shoots, 

 with midribs and veins deeply impressed on their upper surface; 

 fruit subglobose to short-oblong or ovate, scarlet. 



Stamens 20 

 Anthers pink; leaves nearly glabrous at maturity; pedicels slender 

 Leaves ovate to obovate; flowers 1-1.2 cm in diameter, on slightly 



villose pedicels. 4 C . s u c c u 1 e n t a 



Leaves oblong-ovate to oval, 1.6-1.8 cm in diameter, on densely 



villose pedicels 5 C. admiranda 



Anthers rose color; leaves rhombic to oval or ovate, pubescent below 



at maturity; flowers on stout densely villose pedicels 



6 C. c a 1 V i n i 



Stamens 10; anthers yellow 



Leaves rhombic to oval or obovate; flowers on short pedicels, in 

 compact corymbs ; calyx-lobes densely villose on the inner surface ; 

 fruit at least 1.2 cm in diameter, in drooping clusters; spines stout, 



nearly straight 7 C. ferentaria 



Leaves broadly obovate to elliptic; flowers on long slender pedicels, 

 in wide cor3'mbs ; cah'x-lobes onl}'- slightly villose on the inner sur- 

 face; fruit only 7-8 mm in diameter, in erect clusters; spines long, 

 slender, usually curved .- 8 C. macracantha 



Crataegus structilis Ashe 



Jour. Elisha Mitchell Sci. Soc. XIX. 12 (1903). Gruber, Bucks County 

 (Penn.) Nat. Sci. Club Proc. I. 3. Sargent, Acad. Sci. Phila. Proc. 656 



(1905). 



Seneca park, Rochester, B. H. Slavin, 1906; also in eastern Penn- 

 sylvania and in Ontario and southern Michigan. 



