6o6 



ONAGRACEAE. 



Vol. II. 



2. Megapterium Fremontii (S. Wats.) Britton. 



Fig. 3o('3- 



Fremont's Primrose. 



3. Megapterium oklahomense Nor- 

 ton. Oklahoma Primrose. 

 Fig. 3064. 



Megapterium oklahomense Norton. .\nn. Rep. 

 Mo. Bot. Gard. 9: 153. 1898. 



Glabrous throughout, even when young: 

 stems decumbent or ascending, 1 long or 

 less ; leaves firm in texture, lanceolate, 

 acuminate at the apex, narrowed at the 

 base, remotely toothed or entire-margined, 

 2i'-4' long; flowers li'-2' broad; calyx- 

 lobes linear-lanceolate, purple-spotted; cap- 

 sules oblong, short-stalked, about i' long, 

 its wings 3"-4" wide. 



Kansas and Oklahoma. Summer. 



S. Wats. Proc. .'\m. Acad. 

 Britton. Mem. Torr. 



Oenothera I'remont 



8: 587. 18-.3. 

 Megapterium fremonii 



Club 5: 236. 1894. 



Tufted, stems mostly simple, ascending, 

 2'-6' high, densely appressed-pubescent or 

 canescent. Leaves linear-lanceolate to some- 

 what oblanceolate, acuminate at the apex, 

 narrowed at the base into a slender petiole, 

 entire or very nearly so, silvery canescent, 

 j^'_3' long, 2"-4" wide; flowers i'-2' broad; 

 calyx-lobes broadly lanceolate, acuminate, 

 spreading, the tube canescent, very slender, 

 4-5 times the length of the ovary; capsule 

 ovate, canescent, broadly winged, rounded 

 at the summit, about 8" long and 6" wide, 

 short-stalked. 



Plains. Kansas to Texas. Summer. 



16. GALPINSIA Britton, Mem. Torr. Club 5: 236. 1894. 



[Salpingi.\ Raimann, in Engler & Prantl, Nat. Pfl. Fam. 3: Abt. 7, 21; 



Salfii'ga DC] 



1893. Not 



Perennial caulescent herbs or shrubby plants with much branched or tufted stems. 

 Leaves alternate, entire or toothed. Flowers perfect, yellow, axillary. Calyx-tube slender, 

 narrowly funnelform, longer than the ovary; calyx-segments narrow, the tips free m the 

 bud. Petals 4, spreading. Stamens 8, equal in length; filaments filiform; anthers Imear. 

 Ovary 4-celled, elongated; united styles filiform: stigma disk-like, entire. Capsules elon- 

 gated, narrowed at the base, more or less curved. Seeds som.etimes tuberculate. [Anagram 

 of Sall>ingia.] 



About 4 species, in the southern United States and Mexico. Type species : Galpivsia Harttvegi 

 (Benth.) Britton. 



Canescent or appressed-pubescent. low ; leaves narrow. 

 Hirsute-pubescent or tomentose ; leaves broad. 



1. G.lavendulaefolia. 



2. G. interior. 



