110 American Midland Naturalist Monograph No. 7 



diameter; dry woods, rare; Randolph Co., Weber in 1958 



V. lincecurnii Buckl. 



2. Pubescence of lower leaf surface denser, deciduous; grapes 4- 

 12 mm in diameter. 

 3. Twigs terete or nearly so, glabrate; fruit glaucous, about 1 cm 

 in diameter; woods, thickets, and river banks; in the north- 

 ern two-thirds of the state. June-July. Summer Grape. 

 \y . hicolor sensu Bailey, non LeConte; V. argentijolia 



Munson] V. aestivalis Michx. 



3. Twigs distinctly angular, permanently pubescent; fruit black, 

 6-8 mm in diameter; woods and stream banks. June-July. 



Winter Grape V. cinerea Engelm. 



1. Mature leaves green beneath, short-pubescent along the veins, or 

 nearly glabrous. 

 4. Leaves coarsely dentate or slightly 3-lobed ; fruit black, glossy, 

 not glaucous; in woods and along fences, common. May- 

 June. Frost Grape. [F. cordifolia Lam.] V. vulpina L. 



4. Leaves sharply 3- to 5-lobed. 



5. Lobes acuminate, the sinuses rounded; fruit black, not 

 glaucous; alluvial soil in the southern part of the state; 

 Alexander, Jackson, Johnson, Massac, Pope, and Pulaski 

 counties. May-July. Catbird Grape. [F. rubra Michx.; 



V. monosperma Michx.] T'. pabnata Vahl 



5. Lobes and sinuses acute; fruit glaucous; alluvial soil; through- 

 out 111. May- June. Riverbank Grape. [V . vulpina sensu 

 auth., non L.] L. riparia Michx. 



2. Ampelopsis Michx. 



1. Leaves simple, ovate, serrate or slightly 3-lobed; woods, thickets, 

 and along fences; s. 111., extending northward along the river 

 valleys to Hancock and Mason counties. June-July. Raccoon- 

 grape. \Cissus ampelopsis Pers. ; J^itis indivisa Willd] 



A. cor data Michx. 



1. Leaves bipinnate, the leaflets ovate, toothed; moist woods; 

 known from Alexander, Jackson, Pulaski, Randolph, and Union 

 counties. July-Aug. Pepper-vine. [A. bipinnata Michx.; Vitis 

 arborea L. ; Cissus stans Pers.] A. arborea (L.) Koehne 



3. Parthenocissus Planch. 



1. Leaflets dull above, pale beneath; tendrils with 5-8 branches end- 

 ing in adhesive tips; cymes usually crowded into terminal 

 panicles; fruit 5-7 mm in diameter, 1- to 3-seeded; plants high- 

 climbing; woods, and along fences, common. June-July. Vir- 

 ginia Creeper. [Parthenocissus inserta (Kerner) K.Fritsch] 



P. quinquejolia (L.) Planch. 



1. Leaflets somewhat glossy above, scarcely paler beneath; tendrils 

 with 3-5 branches, usually without adhesive disks; cymes soli- 



