374 PHYTOLACCACE^. (POKEWEED FAMILY.) 



author-cells distinct. Style mostly lateral : stigma many-cleft. Fruit terete or 

 ribbed, smooth or glandular. Embryo straight. Cotyledons folded around the 

 albumen. — Trees or shrubs, with opposite or alternate leaves, and mostly rose- 

 colored flowers in corymbose cymes. 



1. P. aculeata, L. Spiny; stem smooth; branches widely spreading; 

 leaves alternate, shoi-t-petioled, ovate or elliptical, acute or obtuse, smooth ; 

 cymes terminal, peduncled, pubescent, many-flowered ; calyx of the sterile 

 flower 10-toothed; stamens?; fruit club-shaped, 10-striate, and beset with 5 

 rows of shining viscid glands. — South Florida. — Shrub 5° high ; the spines 

 short and recurved. Leaves l'-2' long. 



2. P. obtusata, Swartz. Smooth, spineless ; leaves oblong, rounded at 

 the apex, tapering at the base, short-petiolod, revolute on the margins, i-igid ; 

 cymes long-peduncled, many-flowered, the branches horizontal; fertile calyx 

 5-cleft, with the lobes narrow and acute ; stamens 7 ; fruit oblong, many-fur- 

 rowed, glandless ; capsule truncate. — South Florida. — Leaves opposite, l'-2' 

 long, light brown beneath. Flowers 1"- 2" long. 



Order 107. PHYTOLACCACE^. (Pokeweed Family.) 



Herbs or shrubs, with alternate entire leaves, and apetalous S-bracted 

 racemed or spiked flowers. — Calyx composed of 4 - 5 nearly equal sepals, 

 more or less united at tbe base, unchanged in fruit. Stamens hypogynous, 

 as many as the sepals and alternate with them, or numerous, free, or 

 united at the base ; sterile ones none : anthers 2-celled, introrse. Ovary 

 simple or compound. Ovules amphltropous or campylotropous, solitary, 

 erect. Styles as many as the ovaries. Fruit of 1 - many carpels. Albu- 

 men copious or none. Embryo annular, rarely straight. Radicle inferior. 



Synopsis. 



Suborder I. PEfaVEEIEJE. Fruit simple. Cotyledons convolute. 

 Leaves stipulate. 



1. PETIVBMA. Prait an achenlum with reflexed spines at the apex. Embryo straight in 



scanty albumen. 



2. RIVINA. Pruit a berry. Embryo forming a ring around the albumen. 



Suborder II. PHYTOLACCE^. Fruit compound. Cotyledons 

 flat. Leaves exstipulate. 



3. PHYTOLACCA. Fruit a berry, composed of numerous carpels arranged in a circle. 



1. PETIVERIA, Plum. 



Calyx 3-bracted, 4-parted, herbaceous. Stamens 4 - 8 : anthers linear. 

 Ovary simple, 1 -celled. Ovule single, erect, amphitropous. Stigma many- 

 cleft Achenium wedge-shaped, compressed, 2-lobed at the apex, each lobe 



