220 DICOTYLEDONOUS PLANTS. 



8. RHODORA. Linn. 



Calyx 5-toothed. Corol 3-petalled ; petals unequal, slight 

 \y united at the base ; the upper one thrice broader and 3- 

 lobed, (or corol bilabiate ; upper lip 2 3-cleft ; lower one 

 2-toothed.) Stamens and style declinate. Capsule 5-ceHed, 

 5-valved, opening at the top ; dissepiments formed of the in- 

 flexed margins of the valves. Decandria. Monogynia. 



R. canadensis Linn. 



HAB. Mountain bogs. Can. and N. S. May. *> . Shrub 2 feel 

 high. Leaves alternate, oval, very entire, pubescent and glau- 

 ; cous beneath. Flowers purple, in terminal clusters or umbels, 



appearing before the leaves. 



9. RHODODENDRON. Linn. 



Calyx 5-parted. Corol somewhat funnel-form, 5-cIeft 

 Stamens 5 10, declinate; anthers opening by .2 terminal 

 pores. Capsule 5-celled, 5-valved, opening at the summit. 



Decandria. Monogynia. 



OBS It was suggested by Pursh, that all the species of Azalea which 

 he described, except A. procumbens, should be united with Rhododen- 

 dron. This view has been adopted by Mr. Don and Dr. Torrey. These 

 genera do not appear to differ at all, except in the number of stamens,, 

 which even in the true Azalea is liable to great variations.-?- See Don's- 

 remarks on Azalea, Rhododendron, Ledttm and Leiophyllum in Edin. Phil. 

 Jovr. vi. 47. 



* Stamens 510. 



1. R.lapponicum IVahl. : leaves elliptical, roughened with excavated 

 punctures ; flowers in terminal leafy cluster/, campanuhxte ; stamens 

 mostly 8. Azalea lajtponica. Linn. 



HA*. White Hills, N. H. Big. N. to Arc. Amer. July. >. 

 Shrub 810 inches high, with coriaceous evergreen leaves. 

 Flowers deep purple, in terminal clusters or umbels. 



2. R. maximum Linn. : arborescent ; leaves oblong, acute, paler be- 

 neath ; umbels terminal ; segments of the calyx oval, obtuse ; corol 

 campanulate. 



HAB. Swamps and bogs. N. Y. to Car. June, July. *> . 

 Shrub 1015 feet high. Leaves large, coriaceous. Flowers rose 

 coloured, in a large compact cone-like raceme, covered when 

 young with large acuminate ferruginous bracts. Several varie- 

 ties occur in various parts of the U. S. Medicinal. Big. Med. 

 Bot. in. 101. American Rose Bay. 



* * Stamen* 5 



3. R. nudifiomm Torr. : flowers rather naked ; leaves lanceolate-ob- 

 long, nearly smooth and green on both sides ; the midrib beneath brut- 



