=Distribution.=--Newfoundland, northern Michigan, Kansas, Missouri and south in the mountains to Georgia and Alabama. Specimens have been seen from the following counties: Brown (Deam) 1910; Dubois (Deam) 1912; Grant (Deam) 1916; Jackson (Deam) 1918; Jefferson (Deam) 1918; Lagrange (Deam) 1915; Lake (Deam) 1911; Laporte (Deam) 1911, 1913; Lawrence (Deam) 1918; Owen (Deam) 1912; Perry (Deam) 1919; Porter (Deam) 1911 and (Agnes Chase); Putnam (Mrs. Chas. C. Deam) 1913; Ripley (Deam) 1915; St. Joseph (Deam) 1916; Steuben (Deam) 1905; Wells (Deam) 1898. Trees or shrubs, sometimes 13 meters (45 feet) high. In the mountains of Vermont the fruit is often abundant, very juicy and sweet, and in much demand both by man and the birds. The berries on the long racemes ripen at different times and are perhaps two weeks in maturing, thus furnishing food for some time. =3. CRATAÈGUS.= Thorn Apples. Red Haws. Large shrubs or small trees, most at home in a limestone region. This genus has been studied a great deal in this country. Much work is still necessary in Indiana since there are a number of other species that belong in this range. The "knob country" and southwestern Indiana are likely to produce the best results. A. Leaves not deltoid-cordate; pubescent or glabrous. I. Leaves broadest at the middle or apex, cuneate. a. Leaves broadest towards the apex. Leaves not impressed-veined above, shining I. Crus-galli. 1 C. Crus-galli. Leaves impressed-veined above, dull. II. Punctatæ. Fruit glabrous; calyx lobes entire. Fruit ellipsoidal; nutlets usually 3 or 4. Leaves bright yellow-green, slightly impressed above; fruit ellipsoidal. 2 C. cuneiformis. Leaves dull gray-green, strongly impressed-veined; fruit short ellipsoidal. 3 C. punctata. Fruit globose. 4 C. Margaretta. Fruit villous; calyx lobes glandular-serrate. 5 C. collina. b. Leaves broadest at the middle. Leaves impressed-veined; nutlets deeply pitted on inner face. III. Macracanthæ. Leaves dark green, glabrous and shining above, coriaceous. Fruit sometimes 16 mm. (2/3 inch) thick; stamens usually 10; leaves and anthers large. 6 C. succulenta. Fruit sometimes 12 mm. (1/2 inch) thick; stamens 15-20; leaves and anthers small. 7 C. neo-fluvialis. Leaves gray-green, pubescent and dull above, subcoriaceous. 8 C. Calpodendron. Leaves not impressed-veined; nutlets without pits.