94 Schuette — Hawthorns of Northeastern Wisconsin. 



Descriptions of species and subspecies. 

 i. Crataegus subvillosa Schrader. 



A tree with gray, ascending branches, 20-30 feet high and 6-9 inches 

 in diameter. It is easily distinguished by the generally large, densely 

 villous-tomentose leaves with mostly cordate, truncate or even acute 

 bases and slender marginless petioles. The corymbs and flowers are 

 large; sepals hairy both within and without, teeth and glands none or 

 obscure; stamens 12-20 with whitish, later brownish, anthers; the 

 disk with mostly 3-4 styles. The dull red fruits vary in size up to that 

 of cherries and are globose, ovoid or obconical. Thorns few, black, 

 slender, or short and stout. Flowering in the second half of May. Not 

 rare; on banks, slopes, and in moist soil. 



2. Crataegus tomentosa L. 



A slender, crookedly bent but upright, gray tree with few short 

 branches, 8-10 feet high and as thick as a heavy walking stick. The 

 leaves are ovate or obovate (often somewhat oblong or roundish), acute 

 at top, acute or acuminate at base, the blade decurrent on the short, 

 tomentose petiole almost to the end; marginal teeth cuspidately tipped, 

 the blade pubescent beneath, glabrous above; the bracts of the buds are 

 large and red, of the flowers linear-lanceolate, brownish, obscurely 

 toothed and glandless. The compound corymb, the calyx cup, and the 

 usually irregularly toothed and glandless or minutely glandular sepals 

 are finely tomentose. Stamens 12-20; anthers red; pistils 2 or 3; fruits 

 small, somewhat pear-shaped, oblong when young, bulged at the middle 

 like a cask, and quite red when ripe. Not rare in fertile soil or clay, 

 which it prefers. It is unmistakably distinct and easily recognized by 

 its late flowering, about June 10-25, two weeks later than the species 

 last described. 



3. Crataegus macracantha Lodd. 



This species is distinguishable from the last by the white anthers. It 

 is a thorny, spreading, gray shrub, 6-10 feet high. Leaves generally 

 round-ovate, acute or acutish at each end, obscurely lobed and 

 toothed (teeth tipped with a small gland, obtuse or obtusish if this 

 gland is removed), hairy beneath; petiole usually rather slender, 

 mostly with few glands, margined and hairy. Bud scales reddish; 

 stipules and bracts lance-linear, quite glandular; corymbs compound, 

 hairy, as are the calyx cups; sepals glabrous outside, toothed, and gland- 

 ular on the short teeth. Stamens 8-10; pistils 4 (3-5); fruits red, ovoid 

 or globose, as large as big peas. Thorns dark brown, shining, rather 



