rOLEMONIACEJE. (POLEMONIUM FAMILY.) 32i) 



leaflets; the upper 5-7-cleft or cut-toothed, the lobes obtuse; raceme 3-W-flow- 

 ered; calyx-lobes Unear-oblong, obtuse,, becoming spatulate; corolla white (;}'-$' 

 broad). "Woods, liigh mountains of Virginia, and southward. May. 



3. EtfTOCA. (Eutoca, R. Br. } Seeds (or at least the ovules) several or many, 

 rarely only 3 or 4 on each jjlaccnta : corolla usually with small and inconspicuous 

 folds or appendages within, its lobes entire. 



4. P. parvillora, Pursh. Somewhat hairy, slender, diffusely spreading 

 (3' -8' high) ; leaves pinnately deft or the lower divided into 3-7 short lobes; 

 racemes sol ilary, loosely 5- 15 : //oT< /<</ ; prdic< Is jUifonn, at length several times 

 longer than the oblong calyx-lobes; corolla bluish or white ('-$' broad) ; pod 

 f'tc-Si cd<d. (D Shaded banks, Penn. to Virginia and southward. April - June. 



5. P. Frailklillii. Soft-hairy; stem erect (6' -15' high), rather stout; 

 leaves pinnately parted into many lanceolate or oblong-linear lobes, which are 

 crowded and often cut-toothed or pinnatifid ; racemes short, dense, crowded into an 

 oblong spike; calyx-lobes linear: corolla blue; pod many-seeded. (1) (Eutoca 

 Franklinii, R. Br.) Shore of Lake Superior (Prof. Joy, cjr.); thence north- 

 ward and westward. 



ORDER 80. POLEMONIACE^E. (POLEMONIUM FAMILY.) 



Herbs, with alternate or opposite leaves, regular 5-merous and 5-androus 

 flowers, the lobes of the corolla convolute (in one tribe imbricated) in the bud, 

 a 3-cetted ovary and 3-lobed style ; the pod 3-celled, S-valved, locidicidal,few- 

 many-seeded; the valves usually breaking away from the triangular central 

 column. Seeds amphitropous, the coat frequently mucilaginous when 

 moistened and emitting spiral threads. Embryo straight in the axis of co- 

 pious albumen. Calyx persistent, imbricated in the bud. Corolla with a 

 5-parted border. Anthers introrse. Flowers cymose-pauicled. (Insipid 

 and innocent plants ; many are ornamental in cultivation.) 



TRIBE I. POL.EMONIEJE. Calyx 5-cleft. Corolla with the lobes convolute in the 

 bud. Filaments filiform, inserted on the tube of the corolla : cells of the anther parallel, 

 opening lengthwise. 



1. POLEMONIUM. Calyx and corolla open-bell-shaped. Filaments slender, equal. 



2. PHLOX. Calyx narrow. Corolla salver-shaped, with a long tube, including the unequally 



inserted filaments. 



TRIBE II. DIAPENSIE^E. Calyx of 5 sepals. Corolla with the lobes imbricated in 

 the bud, and with the broad and flat filaments in the sinuses. Anthers with the cells 

 opening transversely. 



3- DIAPENSIA. Anther-cells pointless, opening by an obliquely transverse line. 

 4. PYXIDANTIIERA. Anther-cells awn-pointed underneath, opening straight across. 



1. POL-EMONIUftl, Tourn. GREEK VALERIAN. 



Calyx bell-shaped. Stamens equally inserted at the summit of the very short 

 tube of the open-bell-shaped corolla; filaments slender, declined, hairy-appen- 

 daged at the base. Pad few - several-seeded. Low, branching herbs, with ul- 

 28* 



