ERICACEAE 



487 



i. Monotropa L. 

 1. M. uniflora L. In moist rich woods: Anticosti to Fla., B. 

 Col. and Cal. Also in Japan and the Himalayas. 



Scattered throughout the range but rare or perhaps wanting in the 

 interior of the pine-barrens. 



2. Hypopitys Hill. 



Stigma retrorsely bearded; sepals and petals long-ciliate. 1. H. lanuginosa. 



Stigma not retrorsely bearded; sepals and petals short-ciliate. 2. H. americana. 



1. H. lanuginosa (Michx.) Nutt. Woods: Newf. to Ont., Tenn. 



and Fla. 



Throughout the range, but rare in the pine-barrens. 



2. H. americana (DC.) Small. Woods: Ont. and N. Y. to N. C. 



Conn. West Goshen. 



N. Y. S. I. 



N. J. Cranberry Lake, Sussex Co. 



ERICACEAE 



Fruit a septicidal capsule; corolla deciduous; anthers unappen- 

 daged. 

 Corolla of separate petals. 

 Corolla gamopetalous (polypetalous in No. 5). 

 Corolla somewhat irregular. 



Corolla funnelform, slightly 2-lipped; leaves 



deciduous. 

 Corolla 2-lipped, lower lip divided to the base; 



leaves deciduous. 

 Corolla campanulate; leaves evergreen. 

 Corolla regular; seeds angled or rounded. 



Corolla polypetalous; low pine-barren plant. 

 Corolla gamopetalous. 

 Fruit a loculicidal capsule, berry or drupe; corolla deciduous; 

 anthers often awned. 

 Fruit a dry capsule; calyx not acrescent, mostly small. 

 Anther-sacs opening by a terminal pore or chink. 



Sepals or calyx-lobes imbricated, at least in the 

 bud. 

 Capsule dehiscent into a single layer of 5 



valves. 

 Capsule dehiscent into 2 layers, the outer 

 5-valved, the inner 10-valved. 

 Sepals or calyx-lobes valvate or separate in the 

 bud. 

 Anthers 2-awned on the back. 



Corolla urn-shaped or cylindric; leaves 



not glaucous. 9. Neopieris. 



1. Ledum. 



2. Azalea. 



3. Rhodora. 



4. Rhododendron. 



5. Dendrium. 



6. Kalmia. 



7. eubotrys. 



8. Chamaedaphne. 



