228 American Midland Naturalist Monograph No. 7 



ing; woods, chiefly in the southern half of the state. 

 Arrow-wood [F. pubescens var. deamii Rehd.; F. 

 puhescens var. indianense Rehd.; V. dentatum var. 

 deamii (Rehd.) Fern.] V. recognitum Fern. 



6. Leaves distinctly cordate, roundish-ovate, mostly with 

 linear stipules; fruit compressed-ellipsoid, 8-10 mm 

 long; bark gray, exfoliating; bluffs and rocky woods, 

 rare and local; Adams Co., R. Brinker in 1944; Peoria 



Co., T'. H. Chase in 1949. Kentucky Viburnum 



- V . molle Michx. 



1. Leaves palmately veined, usually 3-lobed. 



7. Young twigs glabrous; petioles glabrous and with a pair of 

 glands; marginal flowers of the cyme neuter, with enlarged 

 flat corollas; fruit red; moist woods in the northern half of 

 the state. May-June. American Cranberry-bush [V . opulus 

 var. americanurn (Mill.) Ait.] V. trilobum Marsh. 



7. Young twigs pubescent; petioles pubescent, glandless; cyme 

 with all the flowers alike and perfect; fruit black; dry woods, 

 chiefly in the northern part of the state. May-June. Maple- 

 leaved Viburnum V. acerifolium L. 



3. Symphoricarpos Duham. — Snowberry 



1. Corolla 5-9 mm long; fruit white or greenish -white. 



2. Stamens and style included; twigs and leaves glabrous; petioles 

 2-4 mm long; corolla 5-7 mm long; style 2 mm long, gla- 

 brous; fruits white, the larger ones 12-15 mm in diameter; 

 native of western N. Am. and commonly planted for orna- 

 ment, but not established in 111. Garden Snowben-y [S. 

 racemosus sensu auth., non Michx.; S. racemosus var. 

 laevigatus Fern.] S. rivularis Suksd. 



2. Stamens and style shortly exserted; twigs puberulent; leaves 

 pubescent; petioles 4-10 mm long; corolla 6-9 mm long; 

 style 4-8 mm long, pilose or glabrous; fruits pale greenish- 

 white, 6-8 mm in diameter; dry soil, rare; extending south- 

 ward to Kankakee and Henry counties. June-July. Wolf- 

 berry S. occidentalis Hook. 



1. Corolla 3-4 mm long; fruit red (rarely whitish), ellipsoid, 

 glaucous, 5-7 mm long; stamens and style included; style 2 

 mm long; petioles 2-4 mm long; river banks and woodland 

 pastures, common in the s. two-thirds of the state. July. Coral- 

 berry. Buckbrush [S. vulgaris Michx.] S. orbiculatus Moench 



4. Linnaea L. — Twinflower 



L. americana Forbes. Winnetka, Cook Co., Vascy; probably now 

 extinct in 111. [L. borealis var. americana (Forbes) Rehd.]. 



