1910] Hall: Studies in Ornamental Trees and Shrubs. 25 



8 feet high in California but reaches 30 feet and a trunk diam- 

 eter of 18 inches in Australia, where the hard and heavy wood 

 is used for wheelwrights' work and many implements, such as 

 mallets. 



2. C. speciosus DC. 



A large shrub or becoming a fair-sized tree: leaves narrowly lanceo- 

 late, either obtuse or acute, 1% to 4 in. long, about *4 in. broad, with 

 prominent midrib as in C. lanceolatus but the leaf thicker and the lateral 

 veins obscure: flowers highly colored, bright red, in very dense clusters 

 (sometimes 6 in. long in Australia, much shorter with us) : stamens 1 

 in. long: capsule nearly globose, the summit truncate and but little con- 

 tracted. Illustrations: Fig. 10; pi. 2; Bot. Mag., pi. 1761; Nicholson, vol. 1, 

 fig. 327. 



This is the most highly colored of all the Callistemons, the 

 yellow or golden anthers contrasting finely with the dark-red 

 filaments. With but little training it forms a graceful shrub 

 with many drooping branchlets, eventually becoming a tree 

 under favorable conditions. One specimen in Santa Barbara, 

 now about 20 years old, is 35 or 40 feet high, and receives no 

 care or irrigation. It has two blooming periods, the best being 

 in December and January, but the second (May- June) again 

 covers the tree with gorgeous balls of color suspended on slender 

 pendant twigs. Numerous named cultural forms are derivatives 

 of C. speciosus, the differences lying in varying shades of color, 

 habit, and size. 



3. C. rigidus K. Br. C. linearifolius DC. 



A stiffly branched shrub, the branches inclined to be longitudinal or 

 spreading: leaves narrowly linear, rigid, sharp-pointed, 2 to 5 in. long, 

 about % in. wide, midrib and marginal ribs prominent, cross-nerves 

 spreading nearly at right angles or hidden by numerous oil-dots: flower- 

 clusters deep red, large (rarely small and pale) : stamens 1 in. or more 

 long. Illustrations: Fig. 11; Bot. Eeg., pi. 393; Bot. Cook's First Voy., 

 pi. 109. 



Perhaps the most common form in California. Begins to 

 bloom when only a foot or two high, and if left to itself becomes 

 an ungainly sprawling shrub. Should be frequently pruned 

 up when young and headed in when older. In this way a round- 

 topped, compact, densely flowered shrub 6 to 10 feet high may 

 be obtained. 



