332 Obdbb 47.— rosacea. 



and iranchleta viUous-iomentous ; Sep. incised, leafy, as long as the pd. ; ety. 5 ; & 

 large, roundish-obovoid, with 5 bony, 1-seeded nuts.— Sandy woods, N.^ J. and 

 Southern States. A much branched shrub, 4 to 7f high. Lvs. 1 to 2 by J to 

 J', the upper surface shining and nearly glabrous when old. Fr. greenish-yel- 

 low, near i' diam., eatable when ripe. Apr., May. ,. , , 

 13. PUB^SOENS. Shrubs somewhat larger, with larger, roundish, less downy 

 lvs.; petals rather longer than the calyx. Spines very slender.— Ga. (0. 

 elliptica Ait.) 

 12. C. fldva Ait. Summer Haw. Glabrous ; thorns straight or arcuate ; lvs. 

 membranous, rhombic-obovate, attenuate into a fftonduZor yefeofe, incised, glandular- 

 toothed and slightly lobed above; corymbs 1 (often 2 or 3)-fowered, glabrous; 

 fls. large; sty. 4: or 6; fr. large, pear-shaped, yellowish.— In dry, shady places, 

 Va. to Ha. Tree 15 to 25f high. Lvs. when mature, 2 to 3 long; Fr. 9" long, 

 not well-flavored. Bracts and sepals as well as the petioles glandular. Apr., May. 



13 C. viridis L. Glabrous ; thorns few and short ; Iva. thin, roundish or oval, 

 acute at each end, sharply and doubly toothed above ; petioles glandless (always 7) ; 

 corymis 3 to 6-flowered; &i. rather large, the bracts very glandular; sep. subu- 

 late; sty. 2 or 3 (rarely 5 ?) ; fr. large, globula/r, red, tinged with yellow.— Iowa 

 (Oousens) to Fla. Shrubs 12 to 18f high. Lvs. 1 to 2' long, varying from ellip- 

 tic-ovate to deltoid-ovate (0. populifoha Ell.) or even cordate, sometimes slightly 

 lobed, the petioles slender, often as long as the leaf. Fr. 4" diam., purplish, eata- 

 ble. Apr., May. (0. coocinea 13. Torr. & Gr.) 



14 C. berberifolia Torr. & Gr., with coriaceous, oblong-cuneiform lvs. and (in 

 Sept.) large (6" diam.), deep Hue pomes sent from Louisburg, la. by Dr. Hale, is 

 a doubtfial member of this difficult genus. 



13. PY^RUS, L. Peab, Applb, etc. (Celtic peren ; Anglo-Saxon 

 pere ; Fr. poire; Lat. pyrus ; Eng. pear.) Calyx urceolate, limb 

 5-cleft; petals 5, roundisli ; styles 5 (2 or 3), often united at base; 

 pome closed, 2 to 6-carpeled, fleshy or baccate ; carpels cartilaginous, 

 2-seeded. — Trees or sbrubs. Lvs. simple or pinnate. Fls. wnite oi 

 rose-colored, in cymous corymbs. 



§ PTEtrs. Lvs. simple, glandless ; styles distinct ; pome pyriform No. 1 



I Malus. Lvs. simple, glandless ; styles united below ; fr. globous Nos. 2 — i 



§ Aronia. Lvs. simple, glandular on the midvein; styles united, etc No. .•> 



§ SoBBus. Lvs. pinnate; styles 2 to 5, distinct Nos. 6, 7 



1 P. communis L. Peae Tree. Lvs. ovate-lanceolate, obscurely crenate, 

 glabrous and polished above, acute or acuminate ; corymbs racemous ; cal. and 

 pedicels pubescent; sty. 6, distinct and villous at base. — Tree usually taller than 

 the apple, 20 to 35f high. Branches aBoending. Lvs. 2 to 3J' long, f as wide ; 

 petioles 1 to 2' long. Fls. white. Native in Europe, where in its wild 'Btate the 

 fruit is small and unpalatable. The Romans cultivated 36 varieties (Pliny) but, 

 like the apple, varieties without end are now raised from the seed of this delicious 

 fruit. X 



2 P. Malus L. Common Apple Tree. Los. ovate or oblong-ovate, serrate, 

 not lobed,- downy, the veins all incurved; corymbs subumbellate ; pedicels and 

 calyx villous-tomentous ; pet. with short daws ; sty. 5, united and villous at base ; 

 pome globous, — Native in Europe, and almost naturalized- here. Tree 20 to 25f 

 high (in thickets 50 to 60). Branches rigid, crooked, spreading. Lvs. 2 to 3' 

 long, f as wide, petioles J to 1' long. Fls. expanding with the lvs,, fragrant, 

 large, clothing the tree in their light roseate hue, making ample amends for its 

 roughness and deformity. — The Romans had 22 varieties (Pliny) but the number 

 is now greatly increased. Probably nearly 1000 varieties are cultivated in the 

 U, S, t 



3 P. coron^ria L. Sweet-scented Ceab-tbee. Lvs, ovate, rounded at 

 base, incisely serrate, often siiblobate, straight-veined, pubescent when young, at 

 length smoothish, on slender petioles ; pet. clawed ; pedicels glaibrous ; sep. subu- 

 late ; sty, united and woolly at the base ; fr, as well as fls, very fragrant, oorymb- 

 ous, — Borders of woods, Mid,, West, and South, States, A small tree 10 to 20f 

 high, with spreading branches, Lvs. 2 to 3' long, half as wide, petioles \ to 1' 



