CORN ACE A B. 243 



Family 3. CORN ACE AE iink. Dogwood Family. " 



Flowers perfect, 4 : part;ed; ovary 2-celled. 1. Cornus. 



Flowers polygamous of dioecious; petals minute or rtone. 2. Nyssa. 



1. COBNUS L. ' ■ ■ • ■• i 



Flowers capitate, witl* an involucre of 4-6 large white bracts. 



Low herbaceous shrubs'; rootstocks slender. 1. C. Canadensis. 



Tree or large shrub ; flowers gTeenish-yellow. 2. C. florida. 



Flowers' cymoBe, white, not involucrate. ,. > 



Leaves opposite. 



Leaves downy-pubescent beneath, at least when young. 



Leaves broadly ovate or orbicular. 3. Ci circinata. 



Leaves ovate or ovate-lanceolate. 4. C. Amomum. 



Leaves glabrate, or minutely pubescent beneath. 



Leaves ovate, short-pointed ; twigs purple. 5. C. stdlonifera. 

 Leaves ovate-lanceolate, acuminate. > 6. C. candidissima. 



Leaves alternate, clustered at the ends of the flowering branches. 



7. C. altemifolia. 



1. Cornus Canadensis L. Dwarf Camel, Bimeh-berry. M. p. 689. Low 



woods. Early summer. > 



Lehigh— Salisbury (Kr.). Northampton— Pen Argyl (Li.). 



2. Cornus Florida L. Flowering Dogwood. M, p. 690. Woods. Spring. 



3. Cornus ciroinata L'Her. M. p. 690. Shady, often rocky, situations. 



Spring. 



Philadelphia— Shawmont (Sa.). JSiicfcs-^B'ockHill (Fr.). Delaware— 

 Lansdowne (Pe.), Swarthmore (Ws.). Lancaster— (P.). Berks— Mount 

 Penn, Beading (Wn.). Northampton — Pen Argyl (Ja.) (Li.), Wind 

 Gap (Li.). 



Hunterdon— Byram (C). 



4. Cornus Amomum Mill. Silky Cornel, Kinnikinnik. M. p. 690. Wet 



places. Early summer. , , . . . 



5. Cornus stolonifera Michx. Red-osier Dogwood. M. p. 690. Wet 



places. Early summer. 



Philadelphia— Shawmont (Sa.). Delaware— Wawa (Ja.), Darby, Laza- 

 retto (Ws.). Lehigh— Salisbury (Kr.). t Northampton— (P.). 



Gloucester — Mickleton, frequent (He.), Swedesboro (Li.). Salem — 

 Woodstown (Wa.). 



6. Cornus candidissima Marsh. M. p. 690. Bich soil. Spring. 



Philadelphia — Bybeny, Mart. (B. C), Franklin Wc%d (Je.), West 

 Philadelphia (Mac), Schuylkill above Philadelphia (Pr.). Bucks— Near 

 Sellersville (Fr.), Bock Hill (Ja.), New Hope (Sts.), Haycock Mountain 

 (Ws.). Montgomery — Sumheytown ("VP.). Delaware— Never Swarth- 

 more, Dr. Geo. Smith (Fu.), Lansdowne (Pe.), barrens of Middletown (B. 

 Sm.), Chester (W. Til). Lancaster— (P.). Lehigh— Salisbury (Kr.). 

 Northampton — ( P. ) . 



Burlington— Pemberton (C). Camden— Delanco (C), West Colling- 

 wood (Mar.). Gloucester — Swedesboro (Li.). Salem — Salem (He.). 

 M ercer— Princeton (Te.). 



New Castle— Allapokas, Kirkwood ; etc. Scarce. 



