POLEMONIACE^. (POLEMONIUM FAMILY.) 333 



Order 93. POLEMONIACE^E. (Polemoxium Family). 



Chiefly herbs, with opposite or alternate leaves, and regular solitary 

 or cymose flowers. — Calyx .5-cleft or .5-parted, with menibranaceous- 

 margined lobes, imbricated in the bud. Corolla 5-lobed, convolute in 

 the bud. Stamens 5, inserted on the tube of the corolla. Ovary 3- 

 celled, with 3 to many amphitropous ovules attached to the central pla- 

 centa. Style 3-cleft. Capsule 3-celled, loculicidally 3-valved. Seeds 

 angular. Embryo straight iu the axis of copious albumen. Cotyle- 

 dons leafy. Radicle inferior. 



Synopsis. 



1. PHLOX. Corolla salver-form. Filaments unequally inserted on the tube. Leaves entire. 



2. GILIA. CoroUa tubular-funnel-shaped. Filaments equally inserted near the throat of 



the corolla. Leaves pinnately divided. 



3. POLEMONIUM. Corolla short-bell-shaped. Filaments inserted on the throat of the 



corolla. Leaves pinnate. 



1.. PHLOX, L. 



Calyx cylindrical or bell-shaped, 5-cleft. Corolla salver-form, with a long 

 and slender tube, and obovate or roundish lobes. Stamens 5, included, un- 

 equally inserted on the tube. Style filiform. Ovules solitary in the cells. 

 Capsule ovoid, 1 - 3-seeded ; the valves at length separating from the central 

 placenta. Seeds erect. — Mostly perennial herbs, with opposite or (the upper) 

 alternate entire leaves, and showy purple or white flowers in terminal pani- 

 cled cymes. 



§ 1. Stems herbaceous, erect or ascending. 



* Style long, JiUform : cnhjx teeth lanceolate-subulate, not awn-pointed (except in 

 No. 1) : lobes of the corolla entire. 



1. P. paniculata, L. Smooth; stem tall, branched above ; leaves ovate- 

 lanceolate, acute or acuminate, the ujiper often cordate ; cymes numerous, 

 close-fiowered, forming a corymbose or pyramidal panicle ; calyx teeth long, 

 bristle-pointed ; lobes of the corolla round-obovate. — Var. acuminata. Leaves 

 acuminate at each end, the lower surface, like the stem, pubescent ; calyx 

 lobes shorter. — Rich woods in the upper districts. June -July. — Stem 

 2° -4° high. Leaves 2' -4' long. Corolla purple or white. 



2. P. maculata, L. Stem erect, pubescent and roughish, especially 

 above, rarely branched, often spotted with purple ; leaves rather rigid, lanceo- 

 late, acute ; the lowest often linear and elongated, the upper broader and 

 rounded at the base ; cymes closely many-flowered, lateral and terminal, 

 forming an oblong or pyramidal panicle ; calyx lobes straight, acute ; tube of 

 the corolla slender, curved ; the lobes obovate. — Low woods. June - July. — 

 Stem 2° -3° high. Leaves 2' -4' long. Corolla purple or occasionally white. 



3. P. OVata, L. Smooth; stem (1° high) erect or ascending, sparingly 

 branched ; leaves varying from ovate to lanceolate, acute or acuminate, the 

 upper often rounded or slightly cordate at the base ; panicle corymbose, few- 

 flowered ; calyx lobes lanceolate, short-acuminate. — Open woods in the upper 

 districts. 



