538 



MALACEAE 



C. alhicera. 

 C. sinistra. 

 C. signuta. 



C. Cms- Gain. 

 C. macra. 



182. C. pyracanthoidet. 



183. C. armata. 



XXXII. BERBERIFOLIAE. 

 Fruit globose or very nearly so. 

 Stamens 15-20. 



Mature fruit 1 cm. or more in diameter. 



Ripe fruit yellow, orange, orange-red or green, often with red cheeks. 



Corymbs and shoots densely hirsute or pubescent. 164. C. berberifolia. 



Corymbs and shoots tinely pubescent. 165. C. edita. 



Ripe fruit red or scarlet. 166. C. /era. 



Mature fruit smaller. 



Anthers vellow or nearly white. 



Pedicels and branches of the corymbs long and flexuous. 167. C. Mohrii. 



Pedicels short, the corymbs congested. 168. C. edura. 



Anthers purple or purplish. 169. C. tersa. 



Stamens fewer. 



Mature fruit 1 cm. or more in diameter. 



Corymbs and shoots densely hirsute or pubescent. 170. C. tctrica. 



Corymbs sparsely pubescent : the shoots glabrous or nearly so. 171. C. arta. 



Mature fruit smaller. 



Nutlets 1-3. 172. C. torva. 



Nutlets 3-5. 173. C. tenax. 



Fruit oval or oblong. 



Stamens normally 20. 174. C. crocina. 



Stamens fewer. 



Mature fruit yellow, orange or orange-red, often with red cheeks. 



Spines few or wanting : fruit succulent, yellow. 175. 



Spines numerous : fruit hard, ruddy on the cheeks. 176. 



Mature fruit red. 177. 



XXXIII. CRUS-GALLI. 



Stamens 7-12. 



Fruit subglobose or oval. 



Anthers rose-color or purplish. 



Inflorescence of ample spreading corymbs : fruit 8-13 mm. broad. 178. 



Inflorescence of small short corj'mbs : fruit 5-8 mm. broad. 179. 



Anthers yellow or nearly white. 



Leaf-blades oval, broadly oval or elliptic. 180. C. regalis. 



Leaf-blades obovate or cuneiform. 181. C algens. 



Fruit globose, 5-8 mm. in diameter. 



Ripe fruit bright, shining red : spines slender, 1-4 cm. long. 

 Ripe fruit pruinose, dull red : spines stout, 3-5 cm. long. 

 Stamens more numerous. 



Anthers light yellow. 184. C. arborea. 



Anthers bright rose-color. 185. C. Bushii. 



1. Crataegus tomentosa L. A tree 5-7 m. in height, or frequently a large shrub 

 with several stems, the bark fissured and scaly ashy gray or dark brown. Leaf -blades 5 -10 

 cm. long, 3-6 cm. wide, oval, ovate or oblong-ovate, acute or occasionally rounded at the 

 apex, narrowed at the base into broad margined petioles, serrate or serrate-dentate and in- 

 cisely lobed, slightly scabrous or eventually smooth above, pubescent, especially along the 

 veins below : corymbs compound, many-flowered, pubescent : corolla 10-14 mm. broad : 

 stamens normally 20, the anthers purplish : pedicels, hypanthium and the lanceolate se))als 

 pubescent : fruit oval or pyriform, 10-15 mm. long, dull red : nutlets 2-3, the ventral or 

 lateral faces grooved or hollowed. 



In low rich soil, usually near watercourses, Ontario to North Carolina, Michigan and Missouri. 



2. Crataegus Chapmdnii (Beadle) Ashe. A tree 4-6 m. high, or more frequently a 

 large shrub with several stems, the bark fissured and scaly, ashy gray or brown. Leaf- 

 blades 5-10 cm. long, 3-6 cm. wide, broadly ovate, oval or oblong-ovate, acute or occa- 

 sionally rounded at the apex, nan-owed at tlie base into margined petioles, serrate or serrate- 

 dentate, incisely lobed, eventually glabrous or glabrate above, below varying from sparingly 

 to densely pubescent, especially along the veins : corymbs compound, many-flowered, pu- 

 bescent : corolla about 15 mm. wide : stamens about 20, the anthers purplish : pedicels, 

 hypanthium and the lanceolate sepals pubescent : fruit globose or subglobose, 8-10 mm. 

 long, bright red : nutlets 2-3, the ventral or lateral faces grooved or hollowed. 



In low. rich soil and on banks of streams, Virginia to Georgia. Tennessee and Texas. 



3. Crataegus neofluvialis Ashe. A small tree, or a large much-branched shrub, 3-5 

 m. tall, with gray scaly bark. Leaf-blades obovate, elliptic or rliombic-ovate, 4-8 cm. 

 long, 1.5-5 cm. broad, pointed at the apex, below narrowed into margined petioles, sharply 

 and often doubly serrate and incisely lobed, glabrous al)ove, sparingly pubescent or gla- 

 brate beneath : corymbs compound, many-flowered, glabrous or very nearly so : corolla 

 12-15 mm. broad : stamens normally 20, the small anthers rose-color or purplish : pedi- 

 cels, hypanthium and lanceolate usually incised glandular sepals glabrous or the former 

 with a few weak hairs : fruit globose, 6-10 mm. in diameter, red, green and red, or orange 

 with red cheeks, the flesh thin and Arm: nutlets 3-5, the lateral faces grooved or hol- 

 lowed. 



On banks of streams in the mountains of Virginia, North Carolina and Tennessee. 



