Jones: Flora of Illinois, 105. Malvaceae 181 



3. Leaves sharply 3-5-lobed. 



4. Lobes acuminate, the sinuses rounded; fruit black, not glaucous; alluvi- 

 al soil in the s., e., and n.e. parts of the state. June-July. Catbird 

 Grape V. palmata Vahl 



4. Lobes and sinuses acute; fruit glaucous; alluvial soil throughout 111. 



May-June. [K. vulpina of auth., not L.} Riverbanlc Grape 



V. riparia Michx. 



2. Ampelopsis Michx. 



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

 fences, s. 111., extending northw. along the river valleys to Hancock and 



Wabash counties. June-July. \Cissus ampelopsis Pers.} Racoon-grape 



A. cordctta Michx. 



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

 from Alexander, Pulaski, Union, and Jackson counties. July- Aug. l_A. bi- 



pinnata Michx.; Vit'ts arborea L.; Ctssus stans Pers.} Pepper-vine 



A. arborea (L.) Koehne 



3. Parthenocissus Planch. 



(Psedera Neck.) 

 1. Leaflets dull above, pale beneath; tendrils with 5-8 branches ending in ad- 

 hesive tips; cymes usually crowded into terminal panicles; fruit 5-7 mm. 

 in diameter, 1-3-seeded; plants high-climbing; woods, and along fences, 

 common. June-July. Virginia Creeper P. quinquefolia (L.) Planch. 



1. Leaflets somewhat glossy above, scarcely paler beneath; tendrils with 3-5 

 branches, usually without adhesive disks; cymes solitary; fruit 8-10 mm. 

 in diameter, 3-4-seeded; plants usually low and trailing; thickets and along 

 fences, local; chiefly in the n. half of the state. June- July. [P. vitacea 

 (Knerr) Hitchc] Woodbine P. inserta (Kern.) K. Fritsch 



104 Tiliaceae Juss. — Linden Family 



1. Tilia L. — Linden 

 1 . Leaves glabrous beneath except for tufts of hairs in the axils of the lateral 

 veins, coarsely serrate, abruptly short-acuminate; woods, common. June- 

 July. [T. glabra Vent.} American Linden. Basswood T. americana L. 



1. Leaves tomentose beneath, finely serrate, gradually short-acuminate; woods, 

 s. 111. June-July. White Basswood T. helerophylla Vent. 



105. Malvaceae Neck. — Mallow Family 



1. Calyx subtended by an involucre of bracts. 

 2. Bracts 2 or 3. 



3. Flowers pink or purple; leaves not linear. 



4. Petals obcordate; stigmas linear; leaves roundish in outline, obtusely lobed 



or rarely dissected; carpels I -seeded I. Malva 



4. Petals obtuse or truncate at the apex. 



5. Leaves triangular-hastate; stigmas linear; carpels 1 -seeded 3. Callirhoe 



5. Leaves 5-7-lobed, maple-hke in appearance; stigmas capitate; carpels 2- or 

 3-seeded 6. Sphaeralcea 



