42. POLYGALACEAE 101 



2. Kallstroemia Scop. 

 K. intermedia Rydb. Railroad yards, occasional; ad\ . from south- 

 ern U.S.; Blue Island, near Chicago, Cook Co., Rahcock: H. Eggert 

 in St. Clair Co. [K. maxima sensu auth., non (L.) T. & G.]. 



41. Balsaminaceae Lindl. — Jewel-weed Family 



1. Impatiens L. — Jewel-weed 

 1. Flowers orange, thickly red-dotted; spur strongly incurved; 



moist woods, common. June-Sept. Spotted Touch-me-not 



/. hiftora Walt. 



1 . Flowers pale yellow, sparingly red-dotted ; spur bent at a right 



angle to the sac; moist woods, common. July-Sept. Pale 



Touch-me-not /. pallida Nutt. 



42. Polygalaceae Reichenb. — Milkwort Family 



1. Polygala L. — Milkwort 

 1. Plants perennial or biennial, usually several-stemmed (except P. 

 paucifolia) ; leaves alternate. 

 2. Flowers 1-3, terminal, rose-purple to white, 1.5-2 cm long; 

 leaves oval, near the summit of the stem, the lower scale- 

 like; rhizomes slender, bearing inconspicuous cleistogamous 

 flowers; moist woods, rare; Cook Co. May- June. Fringed 



Polygala P. paucifolia Willd. 



2. Flowers several or many, 3-6 mm long, in teiTninal racemes. 

 3. Leaves lanceolate to ovate, acuminate, 5-20 mm wide; flowers 

 greenish-white; racemes compact; wings orbicular-ovate, 

 2-3 mm long; plants perennial; cleistogamous flowers 

 absent ; wooded banks, or roadsides, local ; extending south- 

 ward to Madison and Wabash counties. May-Sept. Seneca 



Snakeroot P. senega L. 



3. Leaves linear-oblanceolate, acutish, 2-6 mm wide; flowers 

 rose-purple to pink; racemes loose; wings obovate, 4-6 mm 

 long; plants biennial, with small cleistogamous flowers 

 usually present at base; sandy soil in the northern half of 



111. June-Aug P. polygama Walt. 



1. Plants annual, single-stemmed; leaves linear or linear-oblanceolate. 

 4. Racemes capitate, obtuse, more than 5 mm thick. 

 5. Leaves alternate. 



6. Stem glaucous; leaves linear-subulate, distant; petals united 

 into a tube about 5 mm long; wings linear, less than 

 half the length of the keel; prairie soil, in the northern 



half of the state, rare. July-Sept P. incarnata L. 



6. Stem leafy, not glaucous: petals not united into a long 

 tube; wings oval, equalling or exceeding the keel; fields, 

 meadows, and open woods. July-Sept. [P. viridescens 

 L.] P. sanguinea L. 



