70 PHYTOLACCACEAE. 



Spikes axillary and sessile : outer sepals longer than the inner. 1. A. maHtima. 



Spikes terminal and peduncled : outer and inner sepals equal in 



length. 2. A. floridana. 



1. A. maritima J. St.IIil. Stem and branches prostrate, 2-11 dm. long, gla- 

 brous: leaf-blades ciineate, obovate, or elliptic, 1.5-6 em. long: sepals ovate 

 to ovate-lanceolate, slightly acuminate, glabrous, the outer ones becoming 5 

 mm. long: staminodia mth broad bases. — Coastal sand-dunes. — F. K. {Ber., 

 Bah., Cuba, Ant.) 



2. A. floridana (Chapm.) Small. Stem and branches diffuse, 6-14 dm. long: 

 leaf-blades lanceolate to elliptic, 1.5-6 cm. long, glabrous or nearly so, at 

 least at maturity: sepals lanceolate, becoming about 4 mm. long, sparingly 

 pubescent.— Hammocks, shores of Bay Biscayne and sand-dunes. — F. K. 



6. FROELICHIA Moench. Herbs (ours annual or biennial). Leaves 

 opposite: blades entire. Flowers perfect, in dense spikes on long peduncles. 

 Calyx crested or tubercled at maturity. Filaments united into a long tube. 



1. F. floridana (Xutt.) Moq. Plants rather slender, 4-18 dm. tall: leaf- 

 blades linear to oblong-linear or nearly so, 3-12 cm. long, appressed-pubescent 

 beneath: calyx-tube with deeply toothed crests and 1 or 2 tubercle-like or spiny 

 ridges on one or each face at maturity. — Pinelands. 



7. PHILOXEEUS E. Br. Herbs with prostrate or creeping branches. 

 Leaves opposite : blades narrow. Flowers perfect, in dense head-like spikes. 

 Sepals 5, very unequal, the outer ones, at least, obtuse. Filaments united at 

 the base. Staminodia wanting. 



1. P. vermicularis (L.) E. Br. Plant somewhat succulent, the branches 2-18 

 dm. long: leaf -blades half-terete, linear to clavate, 1-3.5 cm. long: spikes 1-2.5 

 em. long, silvery- white : sepals 3.5-4 mm. long, the outer oblong, the inner 

 lanceolate. [Litliophila vermiciilaris (L.) Uline.] — Coastal sand-dunes and 

 shores of Bay Biscayne. — F. K. (Bah., Cuba, Ant.) 



8. IRESINE E. Br. Herbs with erect stems. Leaves opposite: blades 

 broad. Flowers dioecious, paniculate. Sepals 5. equal, acute or acuminate. 

 Filaments united at the base. Staminodia wanting. Stigmas sessile. 



1. I. paniculata (L.) Kuntze. Plants 6-12 dm. tall, glabrous: leaf -blades 

 ovate or narrowly lanceolate, 5-10 cm. long: sepals lanceolate or nearly so, 1 

 mm. long, those of the pistillate flowers woolly without. — Everglades and 

 hammocks. — F. K. (Bah., Cuba, Ant.) 



Family 4. PHYTOLACCACEAE. Pokeweed Family. 



Herbs, shrubs, or trees. Leaves alternate : blades entire, rather fleshy. 

 FloAvers perfect or dioecious, in racemes or panicles. Hypanthium want- 

 ing. Calyx of 4 or 5 sepals. Corolla wanting'. Androecium of 4-8 

 stamens, or more, borne below the ovarj'. Gynoecium 1-many-carpellaiy, 

 borne in the calyx. Fruit baccate. 



Gynoecium l-carpellary : style single: fruits laterally flattened. 1. Rivina. 



Gynoecium 2-many-carpenary : styles 2-many : fruits vertically 



flattened. 2. Phytolacca. 



1. RIVINA [Plum.] L. Relatively small often partially woody plants. 

 Flowers racemose. Sepals narrow, partly enclosing the simple fruit. 



1. R. humilis L. Plants 3-7 dm. tall, or with elongate vine-like stems: leaf- 

 blades ovate, lanceolate, or oblong, 3-15 cm. long, undulate: sepals cuneate 

 to 'linear-oblong, 2-2.5 mm. long: berries 2-3.5 mm. long, mostly red. — Ham- 

 mocks and coastal sand-dunes. — F. K. (Bah., Cvba, Ant.) 



