Jones: Flora of Illinois, 120. Ericaceae 199 



I. Ovary inferior; fruit a berry; shrubs. 



10. Corolla sympetalous, urceolate or ovoid; erect shrubs; fruit black or bluish. 



I 1 . Leaves resinous-dotted; ovary lO-loculed; drupe with 10 nutlets 



10. Ca^lussacia 



II . Leaves not resinous-dotted; ovary 4-5-loculed; fruit a many-seeded berry 



1 I. Vaccinium 



10. Corolla deeply 4-cleft, the lobes reflexed; flowers nodding on slender pedicels; 

 trailing shrubs with small evergreen leaves; berries red, acid 12. Oxvicoccus 



1. Chimaphila Pursh — Pipsissewa 



L Leaves lanceolate, whitish-variegated, acute or acuminate; flowers few (1-5); 

 dilated portion of the filaments villous; dry woods, n.e. III., rare. June- 

 Aug. Spotted Wintergreen C. ynaculata (L.) Pursh 



1. Leaves oblanceolate, green throughout, obtuse or acutish; flowers several 

 (2-8) ; dilated portion of the filaments merely ciliate; dry woods, n.e. 111., 

 rare. June-Aug. [C. nmbellata of auth., not Nutt.; C. umbellata var. 

 cisatlantica Blake] C. corymbosa Pursh 



2. Pyrola L. — Wintergreen 



1 . Style curved downward. 



2. Petals greenish white; leaves oval, thin; woods, n. 111., rare; known from 

 Jo Daviess, Ogle, Lee, McHenry, and Cook counties. June-Aug. 



Shinleaf P. elliptica Nutt. 



2. Petals pink or purple; leaves orbicular, coriaceous, the blades mostly 

 shorter than the petioles; swamps and bogs, rare. McHenry Co., Vasey. 



June. Bog Wintergreen P. ultginosa Torr. 



1. Style straight; petals greenish white; leaves oval; raceme 1 -sided; woods, 

 rare. Cook Co., Babcock- June-Aug P. secunda L. 



3. MONOTROPA L. 



1. Flower solitary; plants glabrous, waxy-white or pink (drying black); stvle 

 shorter than the ovary, glabrous; rich woods, rare or local throughout 111. 

 June-Aug. Indian Pipe M. umflora L. 



1. Flowers several; plants pubescent, tawny or reddish; style longer than the 

 ovary, pubescent; saprophytic on humus in woods, rare. June-Aug. Elk 

 Grove, Cook Co., G. Pearsall 8333. Pinesap. [M. hypopitys sensu Gray, 

 non L.; M. hypopitys var. rubra (Torr.) Farw.; Hypopitys lanuginosa 

 (Michx.) Nutt.} M. lanuginosa Michx. 



4. Rhododendron L. 



{Azalea L.) 

 R. roseum (Loisel.) Rehd. Pink Azalea. Rocky woods, rare. Union Co. 

 May. [/I. nudtflora sensu auth., non L.; R. canescens sensu auth., non Sweet; 

 A. prionophylla Small} 



5. Andromeda L. — Bog-rosemary 

 A. glaucophylla Link. Bogs, rare. McHenry and Lake counties. May-June. 

 \_A. polifolia of auth., not L.} 



