NATIVE WOODY PLANTS OF TB.K UNITED STATES 227 
Rhododendron minus Michx. Piedmont rhododendron. 
R. cuthhertii Small., B. punctatum Ander. 
Range: 28, 29. 
Site: Well-drained, sun, shade. 
Fruit: Capsule. 
A small to large, straggling evergreen shrub ; cominonly occurs on sandy soil. 
Rhododendron nudiflornm (L.) Torr. Pinxter flower. 
Azalea nudiflora L. 
Range : 25, 26, 27, 28, 29, 30. 
Site: Dry, well-drained, moist, sun, shade. 
Fruit: Capsule. 
A small to large shrub; flowers April-May; commonly occurs in sandy soil. 
Rhododendron oblongifolium (Small) Mill. 
Azalea oUongifolia Small. 
Range: 25,29. 
Site : Dry, well-drained, moist, sun, shade. 
Fruit: Capsule. 
A small to large shrub ; commonly occurs in sand or limestone soils. 
Rhododendron occidentale (Torr. and Gray) Gray. Western azalea. 
Azalea occidentaUs Torr. and Gray, A. californica Torr. and Gray. 
Range: 4. 
Site: Well-drained, moist, sun, shade. 
Fruit: Capsule. 
A large shrub ; flowers June-July ; rarely occurs in sunny positions. 
Observations: Much used by mountain beaver. An important livestock-poison- 
ing plant. 
Rhododendron prinophyllum, see Rhododendron roseum. 
Rhododendron prunifolinm (Small) Mill. 
Azalea prunifolia Small. 
Range: 29. 
Site : Well-drained, moist, shade. 
Fruit: Capsule. 
A large shrub. 
Rhododendron punctatum, see Rhododendron minus. 
Rhododendron rhodora, see Rhododendron canadense. 
Rhododendron roseum (Loisel.) Rehd. 
R. prinophyllum (Small) Mill., Azalea rosea Loisel., A. prinophylla Small, 
A. canescens Porter, not Torr., and of Small, not Michx. 
Range : 25, 27, 28, 29. 
Site: Dry, well-drained, sun. 
Fruit: Capsule. 
A large shrub; often dominant and thicket forming in old clearings; very 
ornamental. 
Rhododendron serrulatum (Small) Mill. 
Azalea serrulata Small. 
Range: 30. 
Site: Moist, well-drained, sun. 
Fruit: Capsule. 
A large shrub. 
Rhododendron speciosum (Willd.) Sweet. 
Azalea speciosa Willd. 
Range: 27,28,29. 
Site: Well-drained, sun. 
Fruit: Capsule. 
A small to large shrub ; flowers April-May ; thicket forming ; commonly occurs 
on sandy soil. 
Rhododendron vaseyi Gray. Pinkshell azalea. 
Azalea vaseyi (Gray) Rehd., BilUa vaseyi (Gray) Small. 
Range: 27. 
Site: Well-drained, moist, sun, shade. 
Fruit: Capsule. 
A small to large shrub ; occurs in sandy and other soils ; in cultivation. 
