516 



CXXVIII. EKICINE^. 



TRIBE III. ERICE^E. Corolla persistent, usually 4-merous. Anthers often 

 cohering before flowering. Capsule loculicidal (Erica) or septicidal (Callund). 

 Evergreen shrubs. Buds not scaly. 



PRINCIPAL GENERA. 



* Erica. * Calluna. Philippia. Blseria. 



Grisebachia. Lagenocarpus. Salaxis. 



TEIBE IV. RHODORACE^E. Corolla deciduous, sometimes irregular (Azalea, Rho- 

 dora, Rhododendron). Disk hypogynous, glandular. Capsule septicidal. Leaves 

 flat. Flower-buds scaly, strobiliform. 



PRINCIPAL GENERA. 



Phyllodoce. 

 " Bejaria. 



* Khodora. 

 Loiseleuria. 



Led u m. 



Kill i iiia. 



Dabooecia. 

 Azalea. 



* Rhododendron. 



* Leiopbylluin. 



Ericinea are very closely allied to Vaccinicfp, Pyfulaceec, Monotropeee and Epacndcte (see those 

 families). They should also be compared with Empctrece and IJiajM nvfete (which see). They evidently 

 approach the exotic family of CameUiacecc through the genera Saurattja and Clcthra. In the latter genus, 

 as in many Rhodoracete, the corolla is polypetakms, hypogynous and imbricate, the anther-cells diverge 

 at the base and open by a pore, the ovary is 5-celled and surrounded at its base by a hypogynous disk, 



Rhododendron. 



Verticnl section of ovary 



(mag.). 



Rhododendron. 

 Capsule (mag.). 



Rhododendron. Diagram. 



Rliodudeiidron arboreum. 



Rhododendron. 

 Ovule (mag.). 



Rhododendron. 

 Pollen (mag.). 



