HELIAXTHKMUM 69 



leaves in spring. The fruit is a globular woody capsule with 2 to many 

 seeds. [Seeds; twig cuttings.] 



KEY TO THE PITTOSPORUMS 



* Flowers white or nearly so. (A.) 



A. Flowers very fragrant at night, J- inch long; leaves a rich deep 

 green, lanceolate, often undulated at the margin ; seeds numerous 

 in the J-inch pod. WAVY-LEAVED PITTOSPORUM or M<> ( K 

 ORANGE (23) Pittosporum undulatuiii. 



A. Flowers slightly yellowish with narrow petals, February, March ; 

 leaves silky- white when young; seeds 4. MADRAS PITTOSPOIU M 

 Pittosporum tetraspe'rnium. 



A. Flowers pure white and fragrant, inch broad, in winter ; 

 leaves broad towards tip and blunt, dark above, pale below 

 (sometimes variegated.) COMMON PITTOSPORUM or TOBIRA 

 (24) - Pittosporum Tobira. 



* Flowers some shade of yellow. (B.) 



B. Plants clothed with rusty hairs ; leaves about 3 inches long and 

 half as wide ; flowers | inch long, yellow, February to April. 

 PITTOSPORUM (25) Pittosporum revolutuin. 



B. Plants smooth throughout. (C.) 

 C. Small tree or large shrub with weeping twigs ; leaves 2-4 inches 



long with hooked point. Pittosporum phillyrseoides. 

 C. Shrub 6 feet high ; leaves broad towards tip ; flowers clustered, 



greenish yellow, jasmine-scented. CAPE PITTOSPORUM (2(5) 



Pittosporum viridiflorum. 



* Flowers almost black and seeds black ; used in California as wind- 



breaks and hedges. (D.) 

 D. Leaves pale and glaucous below, 2-3 inches long and blunt at 



tip; a pyramidal tall shrub or tree. KAKO (27) Pittosporum 



crassifolium. 

 D. Leaves thin, dull green, 1^-2 inches long and pointed at tip ; 



tree-like. TAWIIIWHI Pittosporum tenuifblium. 



Helianthemum. The ROCKROSE Helianthemum Chama'cfstus and 

 the FROSTWEED (28) Helianthemum canade"nse are beautiful rock- 

 work plants with usually bright yellow flowers an inch or more in diameter. 

 Some varieties have red or copper-colored blossoms and some are double. 

 The leaves are linear, hairy above and whitish beneath and gem-rally 

 alternate except at baso. The plant commonly cultivated, Ilelianthe- 

 inuni Chamaecistus, grows in procumbent mats less than a foot high and 

 the 5-petaled flowers are in nodding racemes \viih hairy .stems. The 



