Dicotyls or Exogenous Plants. 8& 



LXV. Order COR- NA-CE-^E. DOGWOOD FAMILY. - Trees or 



shrubs; leaves simple; ovary inferior, style one; calyx-limb minute. 



Flowers perfect, 4-parted, leaves mostly opposite Coinus. I 



Flowers diceciously polygamous, o-parted, leaves attenuate y-yssa. i 



1. Genus COR'-NUS. — Flowers perfect; calyx minutely 4-toothed, 

 petals 4, oblong-spreading, stamens 4; fruit a small drupe; leaves 

 entire, and opposite except in one species; flowers small, in cymes or 

 in close heads surrounded by a corolla-like involucre. 



A. Flowers suiioiDnird by a large \-leaved corolla-like 7v/iite hivoliicre. 



Cor'-nus can-a-den'-sis L. Dwarf Cornel; Bunch-berry. — Stems 5-7 in, 

 high, leaves of the involucre ovate, fruit globular; leaves crowded into- 

 a whorl, ovate or oval. 



Cor'-nus flor'-i-da L. Dogwood. — Tree 12-40 ft. high; leaves 

 of the involucre obcordate, 1 '/2 in- long; fruit oval; leaves ovate- 

 pointed. 



.\. I'lotvers 7chite. in flat cymes : no involucre. 



b. Pubescence 'woolly or more or less s/>readini;-. 



Cor'-nus cir-ci-na'-ta L'Her. Round-leaved Cornel or Dogwood. - Shrub 

 0-10 ft. high; branches greenish, warty-dotted; leaves round-oval, 

 abruptly pointed, wooll}- beneath, 2-5 in. broad; fruit light blue. 



Cor'-nus a-mo'-num Wind. {C. sericea h.) Silky Cornel ; Kinnikinnik. 



— Shrub 3-10 ft. high; branches purplish; the branchlets, stalks and 

 lower surface of the narrowly ovate or elliptical-pointed leaves silky- 

 downy (often rusty), pale and dull; fruit pale blue. 



Cor'-nus as-per-i-fo'-li-a Mx. — Branches brownish, the branchlets, 

 etc. rough, pubescent; leaves oblong or ovate, on short petioles, 

 pointed, rough with a harsh pubescence above, and downy under- 

 neath ; fruit white. 



b. Pubescence closely oppressed, straight or silky or none. 



Cor'-nus sto-len-if'-er-a Mx. Red-osier: Dogwood. — Branches, espe- 

 cially the osier-like shoots of the season, bright red-purple, smooth; 

 leaves ovate, rounded at base, abruptly short pointed, roughish with a 

 minute close pubescence on both sides, whitish underneath. 



Cor'-nus can-di-dis'-si-ma Marsh. [C. paniculata L'Her.) Panicled 

 Cornel. — Shrub 4-8 ft. high, much branched : branches grav, smooth, 

 leaves lanceolate, taper-pointed, actite at base, whitish beneath but not 

 downy; cymes convex, loose, often panicled; fruit white. 



