GARDEN BOTANY. ]xi 



or at the summit of the stem, drooping, on very short peduncles ; calyx 

 bristly ; corolla 1' or so long, campanulate. 



C. rapuneuloides. A slender smoothish perennial, with the stem- 

 leaves ovate-lanceolate and acuminate : flowers single in the axils of small 

 bracts, forming a terminal raceme; corolla obtong-campanulate, about l'long. 



C. persicsefolia. A smooth perennial; slender steins 1° or 2° high; 

 root-leaves lance-obovate, stem-leaves lance-linear ; flowers few in a terminal 

 raceme ; corolla large, open-campauulate. 



C. Carpathica. Smooth perennial, forming a large tuft on the ground ; 

 slender stems branching, 6' to 10' high, leaves round-cordate or ovate, toothed, 

 petioled ; peduncles terminal and axillary, slender, 1-flowered ; corolla broadly 

 campanulate, 1' long. 



C. pyramidal is. Not quite hardy, cultivated as a biennial, smooth; 

 lower leaves cordate, upper ones oblong-lanceolate ; stem producing a long 

 pyramidal panicle of very many flowers ; corolla widely expanded and 

 deeply 5-clet't. 



C. grandiflora, a low, hardy, very smooth perennial, with ovate-lance- 

 olate coarsely serrate leaves, and few or solitary terminal flowers, the large 

 corolla balloon-shaped in bud, 5-lobed and widely expanded when it opens, — 

 makes the genus Platycodon, its pod opening at the top instead of on the 

 sides. 



Order ERICACEiE. Heath Family. 



Manual, p. 245. — The cultivated species to be added all belong to the 

 6uborder Ericinece, the proper Heath Family. Many of our wild ones are 

 planted as ornamental shrubs. 



Corolla withering on the receptacle instead of soon falling off, 



Deeply 4-cleft, shorter than the calyx 1. CALLUNA. 



Only 4-toothed or 4-lobed, of various shapes 2. ERICA. 



Corolla deciduous after flowering. (Buds scaly.) 



Leaves thin and deciduous : stamens commonly 5. . 3. AZALEA. 



Leaves coriaceous, persistent : stamens usually 10. ... 4. RHODODENDRON 



1. Calluna vulgaris, Scotch Heather, is seldom cultivated except as 

 a greenhouse plant, along with true Heaths. A patch has recently been dis- 

 covered wild in Tewksburv, Mass. 



v ) 



2. Eri\3a, Heath. The Heaths (a few of which are from Europe, but a 

 vast number from the Cape of Good Hope) belong not to common, but only 

 to choice cultivation : we cannot enumerate the many species which adorn 

 conservatories. 



3. Azalea. Man. p. 257. Besides the wild species, there is one tender and 

 one hardy exotic. 



A. Poutiea. A hardy shrub, with large and clammy yellow flowers, pre- 

 ceding the pubescent leaves. 



A. Indica, Chinese Azalea. A common greenhouse species, with the 

 flowers (purple, red, rose, white, &c.) later than the leaves; sepals green in- 

 stead of scale-like, and the stamens commonly 10. 



4. Rhododendron, Man. p. 257. Besides our wild ones, Nos. 1 and 2 : 

 R. punetatum, of the Southern Alleghanies : a much-branched shrub, 



with slender and drooping branches, small leaves dotted with rusty globules, 

 and fine rose-colored flowers, in June. 



