GENUS 1 8. 



EVENING-PRIMROSE FAMILY, 



2. Gaura coccinea Pursh. 

 Fig. 3069. 



Scarlet Gaura. 



Gaura coccinea Pursh, Fl. Am. Sept. 733. 1814. 



G. marginata Lehm. ; Hook. Fl. Bor. Am. 1 : 208. 1833. 



Erect or ascending, much branched, canescent, pubes- 

 cent or glabrate, 6'-2 high. Leaves oblong, lanceolate, 

 or linear-oblong, denticulate, repand or entire, acute or 

 obtuse at the apex, narrowed at the base, 6"-i8" long, 

 2"-4" wide; flowers sessile, red, turning scarlet, 4"-s" 

 broad ; fruit sessile, terete below, 4-sided and narrowed 

 above, canescent, 3"~4" long. 



Prairies and dry soil, Manitoba to Minnesota, Missouri, 

 Nebraska and Texas, west to Montana, Utah, Arizona, and 

 in Mexico. Adventive farther east. Wild honeysuckle 

 (Texas). May-Aug. 



Gaura glabra Lehm. differs in having a glabrous shin- 

 ing stem, the foliage also glabrous or nearly so, the flowers 

 often paler in color. It ranges from South Dakota to Ne- 

 braska, Montana and New Mexico, and is probably a race 

 of G. coccinea. 



3. Gaura biennis L. Biennial Gaura. 

 Fig. 3070. 



Gaura biennis L. Sp. PI. 347. 1753. 



Erect, much branched, villous or downy- 

 pubescent, 2-s high. Leaves lanceolate or 

 oblong-lanceolate, acute or acuminate at each 

 end, pubescent or finally glabrate above, remotely 

 denticulate, 2'-4' long, 2"-5" wide ; spikes slender ; 

 flowers sessile, white, turning pink, 4"-5" broad; 

 fruit sessile, narrowed at each end, 4-ribbed, 

 villous-pubescent, 3"-4" long. 



In dry soil, Quebec and Ontario to Minnesota, Con- 

 necticut, Georgia, Nebraska and Arkansas. Ascends 

 to 2200 ft. in Virginia. July-Sept. 



Western races are shorter-pubescent and thicker- 

 leaved than eastern, and have been separated as a 

 species, Gaura Pitcheri (T. & G.) Small. 



Gaura Michauxii Spach (G. filipes Spach), admitted 

 into our first edition as recorded from Virginia to 



Illinois and Kansas, is not definitely known to 

 grow north of South Carolina and Tennessee. 



4. Gaura sinuata Nutt. Wavy-leaved 

 Gaura. Fig. 3071. 



Gaura sinuata Nutt. ; Ser. in DC. Prodr. 3 : 

 44. 1828. 



Perennial, erect or decumbent, glabrous, 

 or rarely sparingly villous. Stem branched 

 at the base or throughout, i-3 tall, usu- 

 ally naked above ; leaves oblanceolate to 

 lanceolate, or nearly linear, sinuate-toothed, 

 i'-3' long, acute, on winged petioles or 

 nearly sessile; calyx slightly pubescent, its 

 tube above the ovary funnelform, i"-2" 

 long, several times shorter than the linear 

 segments; petals oblong-obovate,4"-5"long; 

 stamens shorter than the petals ; fruit about 

 7" long, glabrous, 4-ridged and 4-grooved 

 above the stout club-shaped pedicel. 



In dry soil, Kansas to Arkansas and Texas. 

 Wild honeysuckle. May-July. 



