PYROLACEAE 235 



7. CornuB candidissima Marsh. Panici,Ed Cornei, or Dogwood. 

 (Man. p. 690; I. P./. 2jiS.) In rich soil, Me. to N. C, Minn, and 

 Neb. — Pennsylvania : Monroe ; Northampton ; Bucks ; Delaware, 

 Chester ; Montour ; Lancaster ; Huntingdon ; Bedford ; Alle- 

 gheny. 



8. Cotnus alteruifolia X,. f. Alternate-LEAved Cornel or Dog- 

 wood. (Man. p. 691 ; I. F. / 2720.) In woods, N. S. to Ga., Ont., 

 W. Va., Minn, and Ala. — Pennsylvania: Lackawanna; Monroe; 

 Northampton ; Bucks ; Delaware ; Chester ; Lancaster ; Dau- 

 phin ; Franklin ; Blair ; Columbia ; Somerset. 



2. NYSSA L. 



1. Nyssa sylvatica Marsh. Pepperidge. Sour Gum Tupelo. 

 (Man. p. 691 ; L F. /. 2721.) In rich moist soil, Me. and Ont. to Fla., 

 Mich, and Tex. — Pennsylvania : Monroe ; Northampton ; Bucks ; 

 Philadelphia ; Delaware ; Chester ; Lancaster ; York ; Leba- 

 non ; Schuylkill ; Franklin ; Huntingdon ; Allegheny. 



Series 2. GAMOPETALAE. 



Order 1. ERICALES. 



Gynoecium superior : fruit capsular, rarely fleshy. 

 Corolla essentially polypetalous. 

 Ovary 3-celled : leaves deciduous : shrubs or trees. 



Fam. I. Clethraceae. 

 Ovary 4-5-celled : leaves persistent : herbs. Fam. 2. Pyrolaceae. 

 Corolla manifestly gamopetalous (except in Monotropa and Hypopilys of 

 the MONOTROPACEAE and Ledum of the Ericaceae). 

 Herbaceous saprophytes destitute of green leaves. 



Fam. 3. MONOTROPACEAE. 



Shrubs or trees with normal green leaves. Fam. 4. Ericaceae. 



Gynoecium inferior ; fruit a berry or drupe. Fam. 5. Vacciniaceae. 



Family i. CLETHRACEAE Klotsch. White Alder Family. 

 1. CLETHRA L- 



1. Clethra ainifolia L. Sweet PeppErbush. White Alder. 

 (Man. p. 692 ; I. F.y. 2724.) In wet soil, Me. to northern N. J. and Fla., 

 mostly near the coast. — Pennsylvania: Pike, Tvirelve Mile Pond ; North- 

 ampton ; Bucks ; Philadelphia ; Delaware ; Chester. 



Family 2. PYEOLACEAE Agardh. Wintergreen Family. 

 Style elongated : flowers solitary or racemose. 

 Petals more or less converging ; capsule-valves cobwebby : flowers racetaose. 



1. Pyrola. 

 Petals widely spreading : capsule-valves glabrous : flowers solitary. 



2. MONESES. 

 Style very short ; flowers corymbed or umbellate. 3. Chimaphila. 



1. PYROLA L. 

 Style declined : stamens declined. 

 Sepals oblong or lanceolate : leaf-blades lustrous. i. P. roiundifoha. 



Sepals ovate to triangular : leaf-blades not lustrous. 



