CALLISTEMON 



207 



Fig. 328. — Lemon Guava. 



Fig. 329. — Strawberry Guava. 



KEY TO THE SPECIES OF PSIDIUM 



*Branchlets more or less square. Shrub or tree 6-15 feet with the 1- 

 mauy (usually 3) short-stemmed flowers in the axils of the leaves, 

 June ; fruit 2-3 inches broad, globular, yellow, aromatic and astrin- 

 gent, July-Nov. Lemon Guava (3i:8) — Psidium Guaj^va. 

 *Branchlets round. (A.) 

 A. Shrub 4-6 feet with hairy twigs, velvety leaves, and ovoid green- 

 ish yellow fruit with white flesh. Brazil Guava — Psidium 

 Arcica. 

 A. Shrub 8-10 feet with hairy twigs but the leaves smooth above; 

 fruit nearly round, deep yellow outside, with red flesh of delicious 

 flavor. Guiana Guava — Psidium guine^nse. 

 A. Shrub 10-20 feet with smooth twigs and thick smooth dark green 

 leaves ; fruit round (about 1 inch), deep claret color and rough 

 fig-like surface, a strawberry -like fragrance and flavor. Straav- 

 BERRY Guava (320) — Psidium Cattleic^num. 



Callistemon. The Bottle-brushes form a group of ornamental Aus- 

 tralian shrubs with simple alternate entire-edged evergreen leaves. These, 

 like a number of other Australian plants, have the blades of the leaves 



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