64 Introduction to Botany. 



I. Amelanchier Canadensis, T. & G. Shad Bush or Service Berry, A 

 tree, seldom more than 25 feet high, with ovate or ovate-lanceolate leaves, acute or 

 acuminate at the apex, and rounded or cordate at the base. Flowers in spreading 

 or drooping racemes, pedicels long and slender. Bracts and stipules long, silky- 

 ciliate. The sweet pome globose, red or purple. In dry woodlands. 



ii. Amelanchier rotundifdlia, Rcem. (L., rotundus, round; folium, leaf.) 

 Round-leaved Juneeerry. Similar to the above, but with leaves ovate to 

 orbicular, and more or less rounded at both ends. In woods and thickets. 



3. Amelanchier alnifdlia, Nutt. (L., alnus, alder; folium, leaf.) North- 

 western June or Service Berry. Shrub 3 to 8 feet high. Leaves elliptic to 

 orbicular, serrate above the middle. Flowers in short, dense racemes. A bloom 

 on the purple, globose pome. In dry soil. 



XII. CRATAEGUS. Hawthorn or White Thorn. 

 (The Greek name.) 



Thorny shrubs or small trees. White or pink flowers in terminal, 

 corymbose clusters. Leaves simple and often lobed. Receptacle (so- 

 called calyx tube) cup-shaped, adherent to the 1-5 carpels. Sepals or 

 calyx lobes 5; petals 5; stamens numerous. Pome small and drupe- 

 like with 1-5 I -seeded stones. 



1. Cratzegus Crtis-galli, L. (L., cms, leg ; galli, genitive of gallus, a cock.) 

 COKSPUR Thorn. Shrub or small tree, with obovate or oblanceolate, serrate 

 leaves, glabrous, shining above and dull beneath. Stems with slender thorns, 

 which are 2 to 4 inches long. Fruit globular and red. In thickets. 



2. CratEBgus coccinea, L. (L., cocclneus, of a scarlet color.) SCARLET Thorn 

 or Haw or Red Haw. Shrub or small tree, with stout spines I5 to 2 inches long. 

 Leaves broadly ovate or orbicular, truncate or subcordate at the base, sharply 

 incised and serrate, with glandular-tipped teeth. Glandular pubescence on the 

 calyx and pedicels. Red, globular fruit about | inch in^ diameter, sometimes 

 more. In thickets. 



3. Crataegus mdllis, Scheele. (L., mollis, soft.) Red-fruited Thorn or 

 Haw. Similar to CratcBgus coccinea, but with leaves sometimes 5 inches long, 

 usually very pubescent beneath, and hairy fruit, sometimes i inch in diameter. In 

 thickets. 



4. Crataegus flava, Ait. (L., flavus, golden yellow.) Summer or Yellow 

 Haw. Small and often quite thorny tree. Leaves obovate, often obtuse and 

 glandular-dentate at the apex, narrowed at the base, at first pubescent on both 

 sides. Fruit globose to pyrif'orm, yellow, red, or greenish. In sandy thickets. 



5. Crataegus Oxyacintha, L. English Hawthorn. Shrubs or trees, with 

 stout and frequent thorns. Leaves generally broadly ovate or obovate, sharply 

 3-7-lobed, broadly cuneate at the base, i to 2 inches long. Flowers sometimes 

 more than I to 2 inches in diameter, white or pink. Fruit, deep red, globose or 

 ovoid. Roadsides and thickets. 



