Dicotyls or Exogenous Plants. 61 



f. Carpels 2-5, forming a berry-like pome Sorbtis. o 



g. Flowers cymose, fruit berry-like, small Aroma. 6 



g. Flowers racemose, pome berrj'-like, lO-celled Amelanchier. 7 



g. Flowers corymbose, pome drupe-like, 1-5 bony seeds Cratirgus. 8 



h. Pistils numerous, fleshy in fruit Rubus. 9 



i. Leaflets 3, obovate-cuneate, coarsely serrate, leaves radical, flowers 



white Frafraria. 10 



i. Leaflets 3-21, leaves radical and cauline ; flo%vers yellow or white, calyx 



5-cleft, with 5 bractlets at the sinuses, styles deciduous Poteiiiilla. 11 



i. Leaflets 5-7, petals purple, short ; calyx dark-purple inside with 5 



bractlets Comarxim. 12 



i. Leaflets 3, broadly cuneate, cut-toothed, leaves radical ; flowers yel- 

 low W 'aldsteiuia. 13 



i. Root-leaves simple and rounded with minute leaflets on the petiole 

 below, or 3 to 5-lobed, or pinnate, 3-5 leaflets ; styles long and per- 

 sistent ; calyx with 5 bractlets Geiim. 14 



i. Leaves interruptedly pinnate, terminal leaflet large, 7 to 'J-parted, 



calyx 5-cleft, no bractlet I 'hnaria. 15 



k. Leaves compound, calyx-tube urn-shaped, fleshy in fruit Rosa. 16 



k. Leaves simple, calyx deciduous after flowering Primus. 17 



1. Genus OP-U-LAS'-TER. — Carpels l-o, inflated ; leaves roundish, 

 somewhat ."J-lobed ; flowers white in umbel-like corymbs. 



Op-u-las'-ter op-u-li-fo'-li-us (L.) Kuntze. ^Physiocarpiis opiilifolius 

 Maxim.) Nine Bark. — Shrub 4-10 ft. high, with long recurved branches; 

 pods purplish, conspicuous. 



2. Genus SPI-R^'-A. — Petals o, obovate ; follicles (pods) ')-8, not 

 inflated; flowers white or rose-color, in corymbs or panicles; leaves 

 simple; shrubs. 



Spi-rae'-a cor ym-bo'-sa Raf {S. bettiUefolia var. corynibosa Wats.) 

 Meadow Sweet. — Nearly smooth, 1-2 ft. high; leaves oval or ovate, cut- 

 toothed toward the apex ; corymbs large; flowers white. 



Spi-rae'-a sal-i-ci-fo'-li-a L. Common Meadow Sweet. — Nearly smooth, 

 2-3 ft. high; leaves cuneate-lanceolate, simply or doubly serrate; 

 flowers in a crowded panicle, white or flesh color. 



Spi-rae'-a to-men-to -sa L. Hardback ; Steeple-Bush. — Stems and lower 

 surface of the ovate or oblong serrate leaves ve^'y woolh-; flowers in 

 short racemes crowded in a dense panicle, rose-color, or occasionally 

 white. 



3. Genus A-Rl)N'-CUS. — Flowers dioecious, whitish, in many 

 slender spikes, disposed in a long compound panicle; leaves 3- 

 pinnate ; pedicels reflexed in fruit. 



