414 ERICACEAE ARBUTUS 



umella. Corolla deciduous,its lobes or petals imbricated in bud. 



* Anthers opening by a pore or chink at the apex of each cell. 



*- Corolla gamopetalous : scaly leaf-buds none : flowers from the 

 axils of mostly coriaceo-foliaceous persistent bracts : capsule globular, 

 4-5-valved from above. 



ft Phyllodoce Leaves narrow and imbricated : corolla ovoid. 



7 Bryanthus Leavs narrow, alternate but crowded : corolla open-cam- 



panulate, 5-lobed or parted. 



8 Kalmia Leaves comparatively broad and ample, persistent : corolla 



saucer-shaped, 5*lobed and 10-saccate below the limb. 



*- -*- Flower-buds scaly-strobilaceous, the thin or scarious scales 

 caducous or deciduous : corolla gamopetalous : capsule 4-5-valved from 

 apex to base. 



9 Menziesia Shrubs with deciduous leaves: corolla from globular- 

 urceolate to cylindraceous, 4-toothed or lobed : stamens not exserted. 



10 Azaleastrum Shrubs with deciduous leaves: corolla subcampanulate, 

 regular, 5-lobed : stamens not exserted. 



11 Azalea Shrubs with deciduous leaves : corolla funnelform, slightly 

 irregular : stamens exserted. 



12 Rhododendron Shrubs with evergreen leaves : corolla campanulate, 

 slightly irregular. 



*--- Corolla polypetalous or very nearly so. 



13 Lednm Shrubs with evergreen leaves : flowers umbellate from sepa- 

 rate scaly buds: capsule 5-valved from the base. 



* * Anthers opening from the apex nearly or quite to the base of 

 the cell : corolla of distinct petals or deeply 5-cleft : capsule 2-5-valved 

 from above. 



14 Cladothamnns Erect shrubs with deciduous leaves : flowers from 

 leafy shoots of the season, solitary : capsule 5-6-celled. 



Tribe 1 Arbutese DC. vii 581. Trees or shrubs with scaly buds 

 and alternate evergreen leaves. Corolla urn- shaped or globular, 

 5-toothed or rarely 4'toothed, deciduous. Stamens twice as many 

 as lobes of the corolla, included. Fruit fleshy, either a berry or drupe. 



1 ARBUTUS L. Gen. n. 552. (MADRONO). 



Low trees or shrubs with thick evergreen leaves and small pink 

 or white flowers in panicles that terminate the branchlets. Calyx 

 small, 54obed, persistent. Corolla ovate, globular, or urn-shaped, 

 5-toothed, the teeth recurved. Stamens 10, included : anthers 

 flattened, furnished with a pair of reflexed awns on the back be- 

 low the summit; the cells opening by terminal pores. Ovary 

 raised on a hypogynous disk, 5-celled : ovules numerous on a 

 fleshy placentae projecting from the inner angle of each cell. 

 Style rather long : stigma obtuse. Berries with a rough or gran- 

 ular surface, maturing several seeds in each cell. 



A. Menziesii Pursh. Hook. Fl. ii, 36. A tree 20-100 feet high, and 



