516 



CXXVIII. BEICINE^. 



Tribe III. EEiCEiE. — Corolla persistent, usually 4-merous. Anthers often 

 cohering before flowering. Capsule loculicidal {Erica) or septicidal (Galluna,). — 

 Evergreen shrubs. Buds not scaly. 



PRINCIPAL GENEEA. 



' Erica. 

 Qrisebaohia. 



Calluna. 

 Lagenocarpus. 



Philippia. 

 Salaxis. 



Blseria. 



Tribe IV. Ehodoraoe^. — Corolla deciduous, sometimes irregular {Azalea, RJio- 

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

 flat. Elower-buds scaly, strobiliform. 



PRINCIPAL GENEEA. 

 Phyllodoce. * Khodora. * Ledum. * Dabooecia. * Ehododendron. 



• Bejaria. Loiseleuria. * Kalmia, * Azalea. * Leiophyllum. 



M-icinecB are very closely allied to Vacciniece, PyrolacecB, Monotropea and JEpamdece (see theie 

 families). They should also be compared ■with Empetrece and Diapin%ieee (which see). They evidently 

 approach the exotic family of CamelliacetB through the genera Saurauja and CUihra. In the latter genus 

 as in many Bhodoraceee, the corolla is polypetalous, 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, 



RTiododendron. 

 Vertical section of ovary Rhododendron, 



(mag.). Capsule (mag.). 



Tlliododendron. Diagram. 



Eliododendron arioreum. 



Ehododendi-on. Ehododendron. 



Ovule (mag.). Pollen (mag.). 



,lg?i 



