VOL. II.] EVENING-PRIMROSE FAMILY 



2. Gaura coccinea Pursh. Scarlet Gaura. 

 (Fig. 2604.) 



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



Erect or ascending, much branched, canescent, 

 pubescent 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 be- 

 low, 4-sided and narrowed above, canescent, 3 // ~4 // 

 long. 



Prairies and dry soil, Manitoba and Minnesota to Ne- 

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

 in Mexico. May-Aug. 



497 



3. Gaura biennis L. Biennial Gaura. 

 (Fig. 2605.) 



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



Erect, much branched, villous or downy-pu- 

 bescent, 2-5 high. Leaves lanceolate or ob- 

 long-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, 

 south to Georgia, Nebraska and Arkansas. Ascends 

 to 2200 ft. in Virginia. Jxily-Sept. 



4. Gaura Michauxii Spach. Michaux' Gaura. (Fig. 2606.) 



Gaura Michauxii Spach, Nouv. Ann. Mus. 

 Par. 4: 379. 1835. 



Gaura filipes Spach, loc. cit. 379. 1835. 



Erect, glabrous or nearly so, panicu- 

 lately branched above, 2-6 high. Leaves 

 linear or linear-oblong, acute or acutish 

 at both ends, or obtuse at the apex, sinu- 

 ate or denticulate, i / ~3 / long, i>^ // -4 // 

 wide; racemes usually short and loosely 

 flowered, long-peduncled; flowers pedi- 

 celled, white, turning reddish, 3 // -4 // 

 broad; fruit ovoid, 4-angled above, 2 / '-3 // 

 long, borne on a pedicel of nearly or 

 quite its own length. 



In dry fields, Virginia to Illinois and Kan- 

 sas, south to Florida and Louisiana. July- 

 Aug. 



32 



