602 



ONAGRACEAE. 



VOL. II. 



7. Kneiffia fruticosa (L.) Raimann. Common Sundrops. Fig. 3055. 



Oenothera fruticosa L. Sp. PI. 346. 1753. 



Kneiffia fruticosa Raimann, in Engl. & Prantl, Nat. 



Pfl. Fam. 3 : Abt. 7, 214. 1893. 

 Kneiffia fruticosa pilosella Britton, Mem. Torr. Club 



5: 234. 1894. 

 Oenothera pilosella Raf. Ann. Nat. 15. 1820. 



Erect, usually branched, i-3 high, pubescent 

 with short or long hairs, or nearly glabrous. 

 Leaves lanceolate, ovate-lanceolate or oval-lanceo- 

 late, acute or obtusish at the apex, narrowed and 

 sessile at the. base or the lowest petioled, repand- 

 denticulate, or rarely nearly entire, i'-4' long; 

 flowers yellow, diurnal, i'-2' broad, in terminal 

 leafy-bracted spikes; calyx-segments lanceolate, 

 spreading, the tube mostly longer than the ovary ; 

 petals obcordate ; capsule sessile or short-stalked, 

 oblong, prominently winged, glabrous or pubes- 

 cent, 3"-4" long. 



In dry soil, New Hampshire to Georgia, west to 

 Minnesota and Louisiana. Recorded from Nova 

 Scotia. Wild beet. Scabish. June-Aug. 



Kneiffia Sumstinei Jennings, of western Pennsylvania, seems to be a race of this species with 

 abundant long hairs, probably not distinct from Oenothera pilosella Raf. 



8. Kneiffia glauca (Michx.) Spach. 

 Sundrops. Fig. 3056. 



Glaucous 



Oenothera glauca Michx. Fl. Bor. Am. i : 224. 1803. 

 Kneiffia glauca Spach, Hist. Veg. 4: 374. 1835. 



Erect, glabrous and glaucous, ii-3 high. Leaves 

 sessile or the lower petioled, ovate or oval, repand- 

 denticulate, 2' -5' long, 5"-is" wide, acute or acuti&h 

 at the apex, narrowed or rounded at the base ; flowers 

 bright yellow, diurnal, ii'-3' broad, very showy in short, 

 leafy corymbs ; petals broadly obovate, emarginate ; 

 calyx-lobes ovate-lanceolate, acuminate, spreading, its 

 tube very slender and 5-8 times as long as the ovary ; 

 capsule oblong, broadly 4-winged, glabrous, s"-6" long, 

 borne on a short stalk. 



In dry woods, mountains of Virginia and Kentucky to 

 Georgia and Alabama. Scabish. May-Sept. 



ii. HARTMANNIA Spach, Hist. Veg. 4: 370. 1835. 



Annual or perennial caulescent herbs with branched stems. Leaves alternate, commonly, 

 pinnatifkl or lyrate ; buds drooping. Flowers perfect, white, red or purple, diurnal, in ter- 

 minal spikes or racemes. Calyx-tube funnelform; calyx-segments narrow, deciduous, their 

 tips mostly free in the bud. Petals 4, spreading. Stamens 8, the alternate ones longer; fila- 

 ments filiform; anthers linear. Ovary elongated, 4-celled; stigma 4-cleft; ovules numerous 

 on slender stalks, in many rows. Capsules club-shaped, 4-winged, sessile or stalked. Seeds 

 numerous, not tuberculate. [In. honor of Emanuel Hartmann, a resident of Louisiana.] 



About 10 species, in North and South America. Type species: Hartmannia faux-gaura Spach. 



