196 POLYGAIvACEAE 



FAiriLY 5. SIMARUBACEAE DC Ailanthus Family. 

 1. AILANTHUS Desf. 

 1. Ailanthus glandulosa Desf. Tree of Heaven. Ailanthus. 

 (Man. p. 582 ; I. 'P./. 22 j 2.) Escaped, along roadsides and in fields in 

 southern Ont., and in the eastern U. S. — Pennsylvania ; Northampton ; 

 Phil-'^.delphia ; Delaware ; Chester ; Lancaster ; Franklin ; 

 Allegheny. 



Family 6. POLYG-ALACEAE Reichenb. Milkwort Family. 



1. POLYGALA L. 



Flowers several or many in terrainal often spike-like racemes. 

 Racemes spike-like. 

 Corolla orange-yellow : basal leaves persistent with spatulate or obovate 



blades. i. P. lutea. 



Corolla not yellow : basal leaves early deciduous. 

 Leaves, at least those at the lower nodes, whorled. 



Racemes 8-18 mm. thick. 2. P. criiciata. 



Racemes 4-6 mm. thick. 

 Leaves prevailingly whorled : wings as long as the capsule. 



3. P. verlicillata. 

 Leaves prevailingly alternate : wings shorter than the capsule. 



4. P. ambigtia. 

 Leaves all alternate. 



Petals united into a cleft tube 6-8 mm. long. 

 Petals not united into a long tube. 

 Racemes abbreviated. 



Racemes over 11 mm. thick. 

 Racemes less than 11 mm. thick. 

 Racemes elongated. 

 Racemes lax, not spike-like. 

 Flowers 1-4, axillary to leaf-like bracts. 



1. Poly gala lutea L. Orange Milkwort. (Man. p. 5S3 ; l.'B. f. 

 2275.) In pine-barren swamps, L. I., N. Y., south to Fla. and La. — 

 Pennsylvania : Bucks, Bristol. 



2. Polygala cruciata L. M.\rsh Milkwort. (Man. p. 583 ; I. V.f. 

 22j6.) In sandy swamps. Me. to Fla., west to Minn, and La. — Pennsyl- 

 vania : Bucks, Bristol ; Montgomery; Del-^ware; Chester; Lan- 

 caster. 



3. Polygala verticillata L. Whorled Milkwort. (Man. p. 583 ; 

 I. F.y". 227S.) In dry or moist soil, mostly in fields, southern Quebec to 

 Minn., south to Fla. and Mex. — Pennsylvania: Northampton; Le- 

 high ; Luzerne ; Bucks ; Delaware ; Lancaster ; Chester ; 

 Perry; Fr.a.xklin; Huntingdon; Allegheny. 



4. Polygala ambigua Nutt. Loose-spiked Milkwort. (Man. p. 

 584 ; I. F. /. 227g.) In dry soil, N. J. and Pa. to Ga., Tenn. and La.— 

 Pennsylvania : Delaware ; Chester ; Lancaster ; York ; Columbia ; 

 Allegheny. 



