POLEMOXIACE.E. (POLEMONIUM FAMILY.) 329 



leaflets; the upper 5 - "-cleft or cut-toothed, the lobes obtuse; raceme 3-\0-Jloio 

 ered; calyx-lobes linear-oblong, obtuse, becoming spatulate; corolla wldte (,i'-J' 

 broad). Q) — Woods, high mountains of Virginia, and southward. May. 



§ 3. EUTOCA. (Eutoca, R. Br. ) — Seeds (or at least the ovules) several or many, 

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

 folds or appendages within, its lobes entire. 



4. P. pa »'\a flora, Push. Somewhat hairy, slender, diffusely spreading 

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

 racemes solitary, loosely 5 - lo-Jlowered ; pedicels Jiliform, at length several times 

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

 few-seeded. ® — Shaded banks, Penn. to Virginia and southward. April - June. 



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

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

 crowded anil often cut-toothed or pinnatitid ; racemes short, dense, crowded into an 

 oblong spike; calyx-lobes linear; corolla blue; pod many-seeded, (f) (Eutoca 

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

 ward and westward. 



Order 80. POLEMONIACEiE. (Polemonium Family.) 



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

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

 a 3-celled ovary and 3-lobed style ; the pod 3-celled, 3-valved, loculicidal,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, usually imbricated. Corolla with a 

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

 and innocent plants ; many are ornamental in cultivation.) 



Tribe I. POLEMONIEJ;. 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. DIAPENSIEiE. 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 liue 



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



1. POLEMONIUM, Toum. 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-appeo. 

 daged at the base. Pod few - several-seeded. — Low, branching herbs, with al- 



28* 



