Description of Foreign Shrubs 



1 8. Califomian Rose-mallow. (Hibiscus calif ornicus.) 

 Leaf : 3-5', simple, alternate, serrate, net lobed, ovate, cordate 

 at base, soft-hair)^ and ashy gray beneath. Flo\\'er : p. white 

 or rose, \\'ith purple eye, 3-5' across (petals 5, stamens in a coU 

 tunn. 5 capitate stigmas on united stj'les). 



19. The Spiraeas. (Spiraea.) 



The leaf is usually simple, alternate, serrate, 1-2', rarely com- 

 pound or lobed. The flower is polypetalous, \\-ith 5 petals and 

 many stamens, small and clustered, usually white, sometimes pink 

 or red. The specific details are as follows : 



(a) S. callosa : leaf coarsely and finely sharply serrate, lance- 

 oblong, apex taj>ering. Flower (with 10 glands in calyx) in dense 

 terminal clusters. Var. alba has white, var. rosea has deep pink 

 blossoms. Japan. 



(b) S. Antania ivateri : leaf coarsely serrate, long oval, apex 

 pointed. Blossoms in large heads of bright crimson or deep pink ; 

 only 2 "-3° high ; compact and dwarf. Japan. 



(c) S. Douglasii : leaf serrate, lance-oblong, apex blunt, a lit- 

 tle whitened beneath. Flowers small, deep pink, in erect pani- 

 cles of spike-like clusters ; much like "hard hack,'" but deeper 

 colored. California and Oregon. 



(d) S. pruni folia : leaf finely and sharply serrate, ovate, small. 

 Flower as cultivated full-cUnibU, white, ^ across, profuse. 

 Japan. 



(e) S, Reevesli : leaf coarsely serrate, often 3-5-lobed, ellipti- 

 cal, blue-green beneath ; branches not hairy. Flower white, in 

 compact clusters ; May, June. Var. Jtare pleno has flowers 

 double; s'-s". Japan. 



(f) S. sorbifolia : leaf pinnate, alternate ; leaflets 17-21, sharp- 

 ly serrate, lance-shaped, quite tapering. Flower white, small, in 

 large terminal panicles. Siberia. (PI. II.) 



(g) S. Van Houtii : leaf pinnate, alternate ; leaflets 3, serrate, 

 oval. Flowers white, profuse ; May ; 4'-6'. Japan. (PI. II.) 



(h) S. salicifolia : leaf serrate, elliptical, smaller at base, 

 smooth. Flower flesh-red in terminal panicles ; June-August ; 

 branches angular ; 3'-6'. Siberia. 



