ARALIACE^ COENACE^. 93 



• * Umbel single, ore a long peduncle. Styles H orS. 



4. A. quinquefo'lia, Deoaisne. (Ginseng.) Leaves in a 

 whorl of 3 at the summit of the stem, the latter a foot high. 

 Leaflets tnostly S, lung-stalked. — Rich woods. 



5. A. trifo'lla, Decaisne. Stem 4-6 inches high. Leaves 

 in a whorl of 3 at the summit, but the leaflets usually only 3, 

 and sessUe. — Rich woods. 



Ordbe XLV. CORNA'CE.^!. (Dogwood Familt.) 

 Shrubs or trees (rarely herbs) with simple leaves. Calyx- 

 tube adherent to the 1-2-celled ovary, the limb of the calyx 

 inconspicuous. Petals and stamens all epigynous. Style 1 ; 

 stigma flat or capitate. Fruit a 1-2-seeded drupe. 



Synopsis of the Genera. 



1. Coruiis. Flowers perfect (the parts in fours), either forming 



cymes, or in close heads surrounded by a showy involucre 

 resembling a corolla. Leaves mostly opposite. 



2. Nyssa. Flowers dioeclously polygamous, the parts in fives. 



Leaves alternate, mostly crowded at the ends of the branchlets. 



1. coRNirs, Toum. Cornel. Dogwood. 



*Flowers in a, close head, surrounded' by a showy involucre of 



It white bracts. Fruit red. 



1. C. Canadensis, L. (Bonch-berry.) Stem simple, 

 5 or 6 inches high. Upper leaves crowded and apparently 

 whorled, ovate, the lower scale-like. Leaves of the involucre 

 ovate. Rich woods. 



2. C. flor'ida, L. (Flowering Dogwood.) A smaU 

 tree, with opposite ovate pointed leaves. Leaves of the in- 

 volucre notched at the apex, very showy. — Rocky woods. 

 South-west Ontario. 



* * Flowers {white) in flat cymes. No involucre. Fruit blue or white. 



3. C. eireina'ta, L'Her. (Roltnd-leaved Dogwood.) ■ 

 A shrub 4-6 feet high, with greenish warty dotted branches. 

 Leaves opposite, broadly oval, white-woolly beneath. Fruit 

 light blue. — Rich woods. 



