502 TREES OF NORTH AMERICA 



obscurely denticulate; stamens 20; anthers small, rose color; styles 5, surrounded at base 

 by a broad ring of hoary tomentum. Fruit falling in October without becoming mellow, 

 on short rigid pedicels, in few-fruited erect clusters, subglobose, often rather longer than 

 broad, about -f ' in diameter, dull red more or less blotched with green, or often wholly 

 green on one face, or scarlet in one form; calyx enlarged, prominent, with a broad deep 



Fig. 458 



cavity and nearly entire wide-spreading lobes; flesh yellow, thin, dry and hard; nutlets 5, 

 broad and thick, narrow and rounded at the ends, obscurely and unequally grooved on 

 the back, about f ' long. 



A tree, rarely more than 15-20 high, with a well-developed trunk 5 '-6' in diameter, 

 stout spreading branches forming a broad low flat-topped head, and stout branchlets 

 orange-brown in their first season, becoming dark gray-brown the following year, and 

 armed with thick straight or slightly curved bright chestnut-brown shining spines l'-2' 

 in length. 



Distribution. Low limestone ridges opposite Lachine near the south bank of the 

 St. Lawrence River, and on the Island of Montreal, Province of Quebec; near Cornwall, 

 Ontario. 



107. Cratsegus hudsonica Sarg. 



Leaves ovate or slightly obovate, acute, gradually and abruptly narrowed and mostly 

 concave-cuneate at the entire base, sharply and often doubly serrate above with straight 

 or incurved glandular teeth, and frequently slightly divided above the middle into short 

 acute lobes, nearly fully grown when the flowers open at the end of May, and then thin, 

 light yellow-green, smooth and glabrous above with the exception of a few short white 

 scattered hairs on the midrib, and pale and glabrous below, and at maturity thin and firm 

 in texture, glabrous, 2'-2|' long, and l^'-lf wide, with a slender yellow midrib, and 

 5 or 6 pairs of thin primary veins extending obliquely to the point of the lobes; petioles 

 slender, wing-margined above, glandular, at first slightly hairy, becoming glabrous and 

 rose color tow r ard the base, -f'-l' in length; leaves at the end of vigorous shoots broad-ovate 

 to suborbicular, full and rounded or broad-cuneate at the wide base, deeply divided into 

 broad lateral lobes, and 2'-3' long and wide. Flowers about f ' in diameter, on long slender 

 pedicels, in broad usually 10-12-flowered glabrous corymbs; calyx-tube narrowly obconic, 

 glabrous, the lobes gradually narrowed from a broad base, acuminate, glandular-serrate 

 often only below the middle, glabrous on the outer surface, slightly hairy on the inner sur- 

 face; stamens 20; anthers rose color; styles 3-5. Fruit ripening early in September, in 



