POLEMONIACE^E. (POLEMONIUM FAMILY.) 333 



ORDER 93. POLEMONIACEJE. (POLEMONIUM FAMILY). 



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

 or cymose flowers. Calyx 5-cleft or 5-parted, with membranaceous- 

 inargined 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 in 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. Corolla tubular-funnel-shaped. Filaments equally inserted near the throat of 



the corolla. Leaves pimiately 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 paiii- 



cled cymes. 



1. Stems herbaceous, erect or ascending. 



* Style long, filiform : calyx 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 upper often cordate ; cymes numerous, 

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

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

 a -nminate 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, p-inicle corymbose, few- 

 flowered ; calyx lobes lanceolate, short-acuminate. ( )peu woods in the upper 

 districts. 



