172 ROSACEAE 



4. Agrimonia mollis (T. & G.) Britton. SOFT Agrimony. (Man. 

 p. 511 ; I. F. /. /p6o.) Dry woods and thickets, Conn, to Mich., N. C. 

 and T^-s..—Pen7isylvania : Monroe ; Northampton ; Bucks ; Lan- 

 caster. 



5. Agrimonia Brittoniana Bicknell. BriTTOn's Agrimony. (Man. 

 p. 511 ; I. Ic. /. ig6r.) Along thickets and roadsides, Quebec to N. Y., 

 south along the mountains to W. Va. — Pennsylvania : Monroe ; North- 

 ampton. 



6. Agrimonia parviflora Soland. Manv-Flowered Agrimony. 

 (Man. p. 512 ; I. F. /. 1962.) In moist or dry soil, N. Y. to Mich., Ga. 

 and Miss. — Pennsylvania : Delaware, Tinicum ; Bucks ; BERKS ; Lan- 

 caster ; Dauphin ; Allegheny. 



20. SANGUISORBA L. 



Stamens numerous : flowers in head-like spikes : corolla greenish. 



I. 5". Sanguisorba. 

 Stamens 4 : flowers in elongated spikes : corolla white. 2. S. Canadf/isis. 



1. Sanguisorba Sanguisorba (L. ) Britton. Salad BuRNET. (Man. 

 p. 512 ; I. F. /. /96J.) In dry or rocky soil and in ballast, Ont. to Pa. 

 and Md. Nat. or adv. from En. — Pennsylvaiiia : Northampton ; MON 

 roe ; Allegheny. 



2. Sanguisorba Canadensis L. American Great Burnet. (Man. 

 p. 512; I. F. y. 1964.) In swamps and low meadows, Newf. to Mich, 

 and Ga. — Pennsylvania : Monroe ; Northampton ; Bucks ; Dela- 

 ware ; Lancaster ; Lebanon ; Huntingdon. 



21. ROSA L. 



Styles cohering and forming a column, exserted. i. R. seligera. 



Styles distinct, included. 



Sepals persistent : stems unarmed or nearly so. 2. H. blanda. 



Sepals deciduous: leaflets normally 5-12: stems erect or ascending: hy- 

 panthium often pubescent or glandular. 

 Leaflets with serrulate or finely serrate blades. 3. H. Carolina. 



Leaflets with coarsely serrate blades. 

 Fruit subglobose. 



Leaflets 5-7 : spines slender : flowers solitary or few. 4. R. humilis. 

 Leaflets 7-9 : spines stout : flowers corymbose. 5. R. lucida. 



Fruit oval to narrowly ovoid. 



Blades of the leaflets simply serrate. 6. R. canina. 



Blades of the leaflets doubly serrate. 7. R. rubiginosa, 



1. Rosa setigera Michx. Prairie or Climbing Rose. (Man. p. 

 513 ; I. F. f. 196^.') In thickets and on prairies, Ont. to Wis., Fla. and 

 Tex. Escaped in N. J. and Va. — Pennsylvania : Philadelphia, Ger- 

 mantown ; Bucks ; Washington ; Allegheny. 



2. Rosa blanda Ait. Smooth or Meadow Rose. (Man. p. 513 ; I. 

 F. /. 1966.) In moist, rocky places, Newf. to Vt. and northern N. J., 

 west to Ont. and 111. — Pennsylvania : Bucks ; Lancaster ; Perry ; 

 Franklin ; Susquehanna ; Huntingdon ; Delaware. 



