462 BOTANY. 



POLEMONIACE^. 



Drawn up chiefly from the recent "Revision of the North American Polemoulacese " by Dr. Gray, in 

 Proc. Amer. Acad., Vol. VIII., pp. 247-282, '(1870.) Mexican and S. American species omitted. 



I. Stamens unequally inserted. 



1. PHLOX. Corolla salverform. Filaments short, included. Ovules 1-5 in each cell. Seeds un- 

 changed -when -wetted, the simple integument adherent to the albumen. — Leaves entire, at least the lower 

 ones opposite. 



2. COLLOMIA. Corolla salverform or funnelform. Filaments slender, usually exserted. Ovules 

 solitary, or few-many in each' cell. Seeds mucilaginous when moistened and giving out spiricles. — 

 Leaves all or mostly alternate, usually pinnately parted or incised. 



II. Stamens equally inserted. Seeds mostly giving out spiricles or mucilaginous when wetted. 



3. GILIA. Corolla varying from salverform to suhrotate. Filaments not declinate and without 

 appendages. — Leaves various. 



4. POLEMONIUM. Corolla varying from funnelform to rotate. Filaments slender, more or less 

 declinate, hairy-appendaged at base. — Leaves alternate, pinnately divided. 



PHLOX. 



5 1. Broad-leaved perennials ; ovules solitary. Eastern species. 

 * Flowers on very short pedicels in compact cymelets forming a many-flowered panicle or thyrse ; 

 stem tall, strict ; corolla-lobes entire. 



1. P. PANICULATA, L. From Pennsylvania to Illinois, and southward to Georgia and Arkansas. 



2. P. MACULATA, L. From Pennsylvania to Michigan, and south to Florida, Mississippi and 

 Arkansas. 



' * Cymelets corymhed or occasionally simple ; stems erect or spreading ; coroUa-lobes broad, entire 

 or obcordate. 



(ffi.) Glabrous and shining, the corymb or stem rarely scabrous-puberuleut ; calyx-lobes broad; 

 corolla-lobes rounded, entire. 



3. P. OVATA, L. Stems ascending from a decumbent or creeping base ; leaves ovate, occasionally 

 oblong-lanceolate, or the uppermost subcordate, the lowest narrowed to a petiole; calyx-teeth short- 

 ovate or broad-lanceolate, acute. — Along the AUeghanies from Alabama to Pennsylvania. 



4. P. GLABEKEIMA, L. Stems slender, erect ; leaves linear- or occasionally oblong-lanceolate, or the 

 uppermost narrowly ovate-lanceolate, on the upper part of the stem gradually narrowed from the base, 

 acuminate, nearly nerveless, subrevolute on the margin, the upper surface glossy ; calyx-teeth triangu- 

 lar- or lanceolate-subulate, very acute. — From Ohio and 'Wisconsin to Florida and Louisiana. 



(i.) Pilose or glandular ; teeth of the more or less hairy and usually viscid calyx elongated and nar- 

 row ; corolla-lobes sometimes retuse or obcordate. 



(1.) 'Without stolons. 



5. P. Floeidana, Benth. Strict, 2° high, a little hairy or nearly glabrous ; leaves liueai-- or oblong- 

 lanceolate, rather rigid ; top of the stem and corymb glandular ; teeth of the glandular calyx lanceolate- 

 setaceous ; corolla-lobes obovate, entire. — Florida. 



6. P. PILOSA, L. Villous, pilose, or pubescent, sometimes glabrate; stem erect, slender, 1-2° high • 

 leaves lanceolate and linear ; corymb at length open ; calyx rough-villous or subviscid-pubescent the 

 teeth subulate-setaceous, elongated or very slender, sometimes with an awnlike apex ; corolla-lobes obo- 

 vate, entire.— From New Jersey to the Saskatchewan, and south to Florida and W. Texas. 



7. P. AMOSNA, Sims. Pubescence soft, rarely roughish, more or less villous ; stems ascending, simple, 

 6-15' high ; leaves suberect, oblong or lanceolate or linear-lanceolate, acutish or obtuse, the highest 

 bracteating the compact corymb ; calyx-teeth narrowly subulate, very acute, scarcely awned.— Kentucky 

 and Virginia to Florida. 



(2.) Somewhat stoloniferous ; loaves broad, rather short. 



8. P. MVABiCATA, L. Corolla-lobes obcordate or cuneate, emarginate, or sometimes (Var. Lapliamii 

 Wood,) entire.-From Canada to Wisconsin and Dakota, and south to Florida. Alabama, Arkansas and 

 the Platte. 



