1910] Hall: Studies in Ornamental Trees and Shrubs. 15 



long after the tube has opened. Anthers sessile in the base of the coii- 

 cave perianth-lobes. Ovary stipitate or nearly sessile. Style either long 

 and protruding or short, dilated at the end. Fruit a hard woody cap- 

 sule, opening in 2 valves. Seeds 2, compressed, winged above, the wings 

 sometimes continued down the sides. 



Key to the Species of Hakea grown in California. 



A. Leaves mostly l / 2 in. or more wide (narrower only in H. saligna). 

 Margins of leaves entire and flat. 



Leaves pinnately veined, or the veins obscure: flowers white. 



Foliage pale: leaves entire, obtuse, callous-tipped: corolla recurved 



1. H. saligna. 



Foliage bright green: leaves sometimes toothed, sharp-pointed: 



corolla straight 2. H. nitida. 



Leaves parallel- veined: flowers crimson. 



Veins 3 to 7: flower-clusters globular: capsule % in. or more broad 



3. H. laurina. 



Veins numerous: flower-clusters oblong: capsule 1/2 in. broad 



4. H. multilineata. 



Margins of leaves wavy (undulate}. 



Leaves veinless or obscurely feather-veined 2. H. nitida. 



Leaves several-nerved from the base and with numerous cross-veinlets. 



Margins merely wavy; petiole short or none 5. H. elliptica. 



Margins wavy and prickle-toothed 6. H. undulata. 



B. Leaves terete or very narrowly linear, seldom y g in. wide, sharp- 

 pointed. 



Veins several, parallel: leaves flat, about % in. wide 7. H. ulicina. 



Veins wanting: leaves terete. 



Leaves thick, mostly pinnately parted and the lobes terete 



: 8. H. suaveolens. 



Leaves slender, entire. 



Corolla glabrous: 1 capsule ovate, % in. or more thick. 



Young branches glabrous: capsule % to % in. thick 



9. H. acicularis. 



Young branches hairy: capsule % to 1 in. thick. ...10. H. gibbosa. 

 Corolla pubescent: capsule lanceolate, slenderly pointed, % in- 

 thick 11. H. pugioniformis. 



1. H. saligna Knight. 



A pale or grayish bushy shrub (attaining 7 ft. at Santa Barbara), 

 glabrous or the young shoots slightly silky: leaves oblong or lance- 

 shaped, 3 to 4 or 6 in. long, obtuse but usually with a minute callous 

 tip, tapering at base to a short petiole, veins sometimes obscure but 

 usually at least a medial and several oblique lateral veins more or less 



1 In using this character, care must be exercised in distinguishing be- 

 tween the corolla proper and the pedicel, which is also white. The pedicel 

 is pubescent in numbers 9, 10, and 11, but the corolla is pubescent only in 

 the last. 



