POLEMONIACEAE 979 



17. Phlox ovata L. Perennial, glabrous. Stems erect or decumbent, 2-6 dm. tall : 

 leaves opposite ; blades elliptic, oblong or lanceolate, 3-10 cm. long, acute or acuminate, 

 the lower narrowed into petioles, the upper sessile, often partly clasping : calyx glabrous ; 

 lobes triangular or triangular-lanceolate, much shorter than the ^ube : corolla bright 

 purple ; tube 1-2 cm. long ; limb 2-2.5 cm. broad ; lobes rounded or retuse : capsules about 

 4 mm. long. 



In open woods, Pennsylvania to North Carolina, Tennessee and Alabama. Spring and summer. 



18. Phlox glabSrrima L. Perennial, glabrous or nearly so. Stems erect or ascend- 

 ing, sometimes tufted, 3-8 dm. tall, rarely pubescent with spreading hairs : leaves opposite ; 

 blades oblong, lanceolate or linear, 2.5-10 cm. long, acute or acuminate, sessile : calyx 8-10 

 mm. long ; lobes triangular or triangular-lanceolate, very acute : corolla purple or pink 

 purple, or rarely white ; tube 2-3 cm. long ; limb 2-2.5 cm. broad ; lobes rounded or trun- 

 cate, sometimes undulate : capsules 4-4.5 mm. long. 



In open woods, Wisconsin to Virginia, Florida and Alabama. Spring and summer. 



19. Phlox maculataL. Perennial, glabrous or nearly so below. Steins erect, often 

 clustered, 3-10 dm. tall : leaves opposite, remote ; blades oblong-lanceolate, lanceolate or 

 linear, 5-12 cm. long, acuminate, becoming parchment-like in texture, sessile or nearly 

 so : panicles cylindric, 1-4 dm. long, often glandular-pubescent : calyx mostly deep green; 

 lobes lanceolate or triangular-lanceolate, about as long as the tube : corolla pink-purple ; 

 tube 1.5-2 cm. long ; limb 2-2.5 cm. broad ; lobes orbicular-obovate or broadly cuneate : 

 capsules oblong, 4 mm. long. 



In low grounds, New Jersey to Minnesota, Florida and Tennessee. Summer. SWEET WILLIAM. 



20. Phlox acuminata Pursh. Perennial, glabrate. Stems erect or ascending, 6-10 

 dm. tall, sparingly branched above, angled or narrowly winged by the decurrent petioles : 

 leaves opposite ; blades linear-elliptic or oblong-lanceolate, 5-16 cm. long, acuminate, undu- 

 late, short-petioled : panicles often large and broad : calyx glabrous or very minutely pubes- 

 cent ; lobes bristle-like, as long as the tube or nearly so : corolla purple or pink purple ; tube 

 2-2.5 cm. long, 1.5 mm. thick ; limb 1.5 cm. broad ; lobes cuneate : capsules 5 mm. long. 



In mountain woods, North Carolina and Alabama. Summer. 



21. Phlox paniculata L. Perennial, minutely pubescent or glabrate. Stems 6-12 

 dm. tall, branched above : leaves opposite ; blades elliptic, elliptic-lanceolate or narrowly 

 oblong-elliptic, 8-20 cm. long, acuminate, undulate, narrowed into margined petioles or 

 nearly sessile : panicles corymbose-pyramidal : calyx granular or sparingly pubescent ; 

 lobes subulate, shorter than the tube : corolla pink-purple or white ; tube about 2 cm. long, 

 1.5-2 mm. thick ; limb 15-17 mm. broad ; lobes obovate or cuneate-obovate : capsules oval, 

 4-5 mm. long. 



In open woods, Pennsylvania to Illinois, Florida and Louisiana. Summer. SWEET WILLIAM. 



22. Phlox amplifolia Britton. Perennial, pubescent. Stems 5-13 dm. tall, villous, 

 or glandular- villous, at least above : leaves opposite ; blades ovate, oval, elliptic or lanceo- 

 late on the upper part of the stem, thin, mostly 5-15 cm. long, acuminate, narrowed into 

 broad bases or winged petioles, scabrous above : inflorescence similar to that of the next 

 preceding species : calyx glandular-villous : corolla about 2 cm. long ; tube glabrous : 

 capsules 4-4.5 mm. long. 



In woods, and thickets, Kentucky to Missouri and Tennessee. Summer. 



2. GfLIA K. & P. 



Annual or perennial sometimes shrubby herbs, with diffuse or erect and elongated 

 stems. Leaves alternate or opposite : blades entire, narrowly cleft or dissected. Flowers 

 solitary in the axils, variously disposed. Calyx pedicelled : tube campanulate to tubular : 

 lobes 5, often shorter than the tube. Corolla white or highly colored : tube short or elon- 

 gated : lobes 5, erect or spreading. Stamens 5, sometimes exserted : filaments evenly or 

 irregularly adnate to the corolla-tube. Ovules solitary or several in each cavity. Capsule 

 mainly included in the calyx whose tube it ruptures at maturity. Seeds often mucilagi- 

 nous, those of some species emitting spiral threads. The plants flower in the summer, or 

 southward in the spring and summer. 



Corolla rotate. 



Annual : leaf-blades incised-toothed : corolla less than 15 mm. broad. 1. G. intisa. 



Perennial : leaf-blades parted : corolla over 20 mm. broad. 2. G. rigidula. 



Corolla funnelform, rather narrowly so. 3. G. rubra. 



1. Gilia incisa Benth. Annual, puberulent. Stems 1-4 dm. tall, sparingly branched 

 r sometimes diffusely so : leaves alternate ; blades various, incised-toothed : calyx 3-5 



