ARALIACE^ CORNACE.fi. 93 



* * Umbel single, on a long peduncle. Styles 2 or 3. 



4. A. quinquefo'lia, Decaisne. (GINSENG.) Leaves in a 

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

 Leaflets mostly 5, long-stalked. Rich woods. 



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

 in a whorl of 3 at the summit, but the leaflets usually only 8, 

 and sessile. Rich woods. 



ORDER XLV. CORNA'CE^l. (DOGWOOD FAMILY.) 

 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. Comas. 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. \ys.sa. Flowers dioeciously polygamous, the parts in fives. 



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



1. CORNVS, Tourn. CORNEL. DOGWOOD. 



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

 * It white bracts. Fruit red. 



1. C. Canadensis, L. (BUNCH-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 small 

 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. (ROUND-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. 



