68 ANACARDIACE.E. (CASIIKW FAMILY.) 



inserted under an orbicular or annular disk at the bottom of the calyx, 

 mostly valvate in the bud. Stamens twice as many as the petals, and in- 

 serted with them ; anthers introrse. Ovules anatropous, pendulous, 

 mostly two in each cell. Stigmas 1-5. Fruit drupaceous, dry; the peri- 

 carp) often sjjlitting into valves. Albumen none. Radicle superior. 



1. BURSERA, Jiicquin. 



Flowers polygamous. Sterile Fl Calyx .3 - .5-parte(l. Petals 3-5, valvate 

 in the bud. Stamens 6- 10. Disk crenulate. Fertile Fl. Calyx S-parted. 

 Petals 3. Stamens 6. Ovary ovate, 3-cclled. Style short : stigma 3-lobed. 

 Drupe oblong, 1-seeded ; the pericarp 3yalvcd. Cotyledons wrinkled. 



1. B. gummifera, Jacquln. Leaves alternate, 3 - 9-foliolate, long-peti- 

 olcd, deciduous ; leaflets stalked, opposite, ovate, acuminate, entire, rounded or 

 slightly cordate at the base, at length smooth on both sides ; flowers small, 

 whitish, in axillary racemes ; drape purplish. — South Florida. — A large tree. 



2. AMYRIS, L. ToRcii-WooD. 



Flowers perfect. Calyx 4-partcd. Petals 4, narrowed at the base, imbricated 

 in the bud. Stamens 8, shorter than the petals, hypogynous. Ovary 1 -celled. 

 Stigma capitate. Drupe globose, 1-seeded. Cotyledons ]jiano-convex. — Trees 

 or shrubs. Leaves 3 - 7-foliolate, opposite, with glandular pellucid dots. Flow- 

 ers paniclcd, white. 



1. A. Floridana, Nutt. Smooth ; leaves petioled, trifoliolate ; leaflets 

 ovate, otitusc, entire, on slender stalks ; branches of the panicle opposite ; drupe, 

 like the flowers, dotted. — South Florida. — A sin-ub or small tree. Leaflets 

 \'-\^' long, shining above Flowers yellowish-white. 



Ordkr 37. ANACARDIACEiE. (Cashew Family.) 



Trees or shrubs, with milky or resinous juice, alternate exstipulate dot- 

 less leaves, and perfect or polygamous regular flowers. — Sepals and 

 petals 4-5, imbricated in the bud. Stamens as many as the petals, or 

 twice as many, and inserted with them into the base of the calyx. Ovary 

 solitary, with a single ovule ascending from the base of the cell. Style 

 simple or 3-cleft. Fruit drupaceous. Seeds without albumen. Radicle 

 curved. 



1. RHUS, L. ScMACH. 



Calyx 5-parted. Petals 5, inserted with the 5 stamens on the disk which sur- 

 rounds the ba.se of the ovary. Stigmas 3. Drupe dry. Radicle superior, in- 

 curved. — Shrubs or small trees. Leaves pinnate or trifoliolate, rarely simple. 

 Flowers small, greenish, in spikes or panicles. 



