JUGLANDACEAE. 93 



1. MYRICA L. Wax Myrtle. 



Shrubs or small trees, with entire, dentate or lobed 

 mostly resinous-dotted leaves, monoecious or dioecious. 

 Staminate aments oblong or narrowly cylindric; stamens 

 4-8. Pistillate aments ovoid or subglobose; ovary sub- 

 tended by 2-4 short bractlets. Fruit globose, waxy. 



1. M. calif ornica C. & S. Thickly branched evergreen shrub, 

 2-3 m. high; leaves thick, glabrous, oblong or oblanceolate, tapering 

 to an acute apex, narrowed below to a short petiole, 6-12 cm. long, 

 remotely serrate or nearly entire; flowers monoecious; staminate 

 aments below the pistillate, 2 cm. long or less; stamens 7-16, united 

 by their filaments; bractlets 2, narrowly oblong, hairy at apex; 

 pistillate aments in the axils of the upper leaves, 6-10 mm. long; 

 ovary ovate, with 2 exserted styles, red; bractlets minute; fruit 

 brownish-purple, covered with a whitish wax, 4 mm. in diameter. 



Rustic Canyon near Santa Monica, Hasse. 



Family 19. JUGLANDACEAE. Walnut Family. 



Trees or shrubs, with alternate pinnately compound 

 leaves and monoecious bracteolate flowers, the staminate 

 in long drooping aments, the pistillate solitary or several 

 together. Staminate flower consisting of 3-numerous 

 stamens, with or without an irregularly lobed perianth 

 adnate to the bractlet. Anthers erect, 2-celled, dehiscent 

 by a longitudinal slit; filaments short. Pistillate 

 flowers bracted and usually 2-bracteolate, with a 3-5- 

 lobed (usually 4-lobed) calyx, or without both calyx 

 and petals. Ovary inferior, 1-celled or incompletely 

 2-4-celled; ovules solitary, erect, orthotropus; styles 2. 

 Fruit in ours a drupe, with indehiscent, fibrous woody 

 exocarp, enclosing the bony endocarp or nut, which is 

 incompletely 2-4-celled. Seed large, 2-4-lobed; endo- 

 sperm none; cotyledons corrugated, oily. 



1. JUGLANS L. Walnut. 



Trees or large shrubs, with a somewhat resinous-aro- 

 matic bark and foliage, superposed buds and odd-pinnate 

 leaves, with nearly or quite sessile leaflets. Staminate 

 flowers borne on the twigs of the previous year; perianth 

 3-6-lobed; stamens 8-40, in 2 or more series. Pistil- 



