PYROLACEAE 235 



7. Comus candidissima Marsh. Panicled Cornel or Dogwood. 

 (Man. p. 690; I. F. /. 2Jj8.) In rich soil, Me. to N. C, Minn, and 

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

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

 gheny. 



8. Comus alternifolia L. f. Alternate-leaved Cornel or Dog- 

 wood. (Man. p. 691; I. F. y. 2^20.) 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 ; I. F. f. 2J21.') 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 Monolropa and Hypopitys of 

 the MoxoTROPACEAE 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 alnifolia L. Sweet Pepperbush. White Alder. 

 (Man. p. 692 ; I. F./. 2J24..) In wet soil, Mc. to northern N. J. and Fla., 

 mostly near the co&s\..— Pennsylvania : Pike, Twelve Mile Pond ; North- 

 ampton ; Bucks ; Philadelphia ; Delaware ; Chester. 



Family 2. PYROLACEAE Agardh. Wintergreen Family. 



Style elongated : flowers solitary or racemose. 

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



1. Pyrola. 

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



2. Moneses. 

 Style very short : flowers corj-mbed or umbellate. 3. Chimaphii.a. 



1. PYROLA L. 

 Style declined : stamens declined. 



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



Sepals ovate to triangular : leaf -blades not lustrous. 



