170 American Midland Naturalist Monograph No. 2 



1. Leaflets lanceolate to elliptical; flowers 5-6 mm. long; calyx-tube 1-1.5 mm. 

 long; pods 2.5-3.5 cm. long, strigose; seeds 2.5-3 mm. long; river banks. 

 July-Sept. [5'. pauciflora (Benth.) Wats., not Phaseolus pauciflorus 

 Don^ S. leiosperma (T. & G.) Piper 



34. Clitoria L. — Butterfly Pea 



C. mariana L. Dry banks, s. 111. June-Aug. \Martiusia mariana (L.) 

 Small} 



35. Amphicarpa Ell. — Hog-peanut 



(Falcaia Gmel.) 



1. Stem with closely reflexed hairs or glabrate; leaflets thin; inflorescence sim- 

 ple, 1-8-flowered; pods pubescent on the margins; woods, common. Aug.- 

 Sept. [/I. monoica (L.) Ell.; Falcata comosa sensu Britt., not Glycine 

 comosa L.} A. bracteata (L.) Fern. 



1. Stem brownish hirsute-villous; leaflets firm; inflorescence branched, 7-17- 

 flowered; pods pubescent throughout; woods, common. Aug. -Sept. \_A. 



bracteata var. comosa (L.) Fern.; Falcata pitcheri (T. & G.) Ktze.} 



A. comosa (L.) G. Don 



36. Galactia p. Br.— Milk Pea 



G. inississippiensis (Vail) Rydb. Dry soil. Union, Johnson, and Gallatin 

 counties. July-Aug. 



85. Geraniaceae J. St. Hil. — Geranium Family 



1 . Leaves palmalely veined and lobed or divided; anthenferous stamens 10, rarely 5 



1 . Ceraniitm 



L Leaves pinnately veined and dissected; anthenferous stamens only 5 2. EroJnim 



1. Geranium L. — Cranesbill. Wild Geranium 



1. Petals 14-22 mm. long; plants perennial; moist woods, and along roads, 

 throughout 111. May-June G. maculatum L. 



1. Petals 2-10 mm. long; plants annual or biennial. 



2. Leaves palmately lobed; carpels attached to the styles; petals 2-7 mm. 

 long. 



3. Sepals awn-tipped (the tips 1-3 mm. long); seeds reticulate. 



4. Fruiting pedicels much longer than the calyx; beak of mature style- 

 column 4-6 mm. long; fields and open woods, occasional. June- 

 Aug G. bickncllii Britt. 



4. Fruiting pedicels shorter, or scarcely longer than the calyx; beak 



of mature style-column 1-2 mm. long; roadsides, fields, and open 

 woods. May-July G. carolintanum L. 



3. Sepals merely callus-tipped; seeds smooth or nearly so. 



5. Carpels pubescent, not rugose; style-column beakless; waste places; 



nat. from Eur. May-Aug G. piisilltim Burm. f. 



5. Carpels glabrous, rugose; beak of the style-column 1-2 mm. long; 

 waste places; nat. from Eur. May-July G. molle L. 



