ONAGRACEAE (EVENING PRIMROSE FAMILY) 339 



angled, 2-3 cm. long, divergent or becoming deflexed. Habitat and range of 

 the last. 



4. Anogra Nuttallii (Sweet) A. Nels. Bot. Gaz. 34: 368. 1902. Stems one 

 to several from the crown, erect, 5-10 dm. high: leaves very numerous, some- 

 what fascicled in the axils, softly and minutely puberulent on the lower sur- 

 face, broadly linear, margin entire or merely denticulate: flowers drooping 

 in bud: calyx glandular-puberulent on the tube; calyx-lobes narrowly lanceo- 

 late, 2-3 cm. long, about as long as the tube, the tips free: petals white, broadly 

 obovate, nearly as long as the reflexed calyx-lobes: stigmas exserted, linear, 

 about 10 mm. long: mature capsule cylindrical, about 3 cm. long, pale, mi- 

 nutely puberulent except on the rather broad, whitish sutures, not contorted: 

 seeds narrowly ovate, light green, copiously speckled with purple, indistinctly 

 striate under a lens, about 2 mm. long. Throughout our range and westward 

 and northward. 



5. Anogra pallida (Lindl.) Brit. 1. c. Much resembling the preceding but 

 the leaves usually narrow, nearly entire and wholly glabrous, more rarely 

 broader, minutely pubescent (especially on the margins) and runcinately 

 toothed or pinna tifid toward the base: calyx glabrous or with scattered hairs; 

 the tube much longer than the ovary and often twice or thrice the length of 

 the segments: style not exserted: capsules spreading, at least some of them 

 more or less contorted. (A. Vreelandii Rydb. Bull. Torr. Bot. Club 31: 570. 

 1904.) Less frequent; Wyoming and western Nebraska and northward and 

 westward. 



6. Anogra trichocalyx (Nutt.) Small, Bull. Torr. Bot. Club 23: 174. 1896. 

 Stems usually several from the crown, 1-3 dm. long: leaves pinnatifid, some- 

 what canescent and sprinkled with rather long flattish hairs; the terminal 

 lobe of the basal leaves oblong and entire: calyx rather densely villous with 

 long crisped hairs; the segments shorter than the tube and the roundish petals 

 which exceed the stamens and the short style: capsule cylindrical: seeds lan- 

 ceolate, acute, smooth, with minute purple spots. Frequent in sandy soil; 

 Nebraska to Nevada. 



7. Anogra cinerea Rydb. 1. c. 31: 570. 1904. Branched perennial ; the stem 

 3-4 dm. high, whitish cinereous, strigose when young: leaves lanceolate to 

 ovate-lanceolate, mostly subsessile, 3-5 cm. long, sinuate-dentate or dentic- 

 ulate, cinereous: calyx glabrous or sparingly long-hairy, acuminate; tips free 

 and rather long: petals 15-18 mm. long: pods divergent at right angles to the 

 stem, 3-3.5 cm. long, almost straight. (A. latifolia Rydb. 1. c. 33: 146.) 

 Nebraska, Colorado, and Wyoming. 



8. Anogra neo-mexicana Small, 1. c. 176. Stout, hispid-villous, dark 

 green: stem 6-7 dm. tall, flexuous, clothed with a pale papery bark: leaves 

 oblong or lanceolate, 4-8 cm. long, sinuate-toothed, puberulent, with some 

 hispid-villous hairs on the midrib and lateral nerves : calyx hispid-villous, the 

 tube stoutish, 4-4. 5cm. long, nearly thrice longer than the ovary; the segments 

 nearly linear, one half as long as the tube, the tips free in the bud: petals 

 broadly deltoid, 1.8 cm. long, 2 cm. broad: style slender, longer than the 

 petals: capsule nearly cylindric, 2-2.5 cm. long, somewhat narrowed at the 

 base and the apex, hispid-villous: seeds "oblong and perfectly smooth." 

 New Mexico and probably southern Colorado. 



9. Anogra coronopifolia (T. & G.) Brit. 1. c. Stems erect or nearly so, 

 branched, 1.5-3 dm. tall, more or less hispid or canescent: leaf-blades lanceo- 

 late or oblanceolate in outline, 1.5-5 cm. long, usually finely and deeply pin- 

 natifid into linear-oblong lobes: sepals linear: corolla white, turning pink, 

 2-3 cm. broad: capsules oblong, abruptly constricted at the top, straight, 

 8-20 mm. long, about 4 mm. thick: seeds tuberculate. Plains and prairies; 

 from Montana to Texas. 



7. PACHYLOPHUS Spach, FRAGRANT PRIMROSE 



Perennial, acaulescent or somewhat caulescent herbs. Leaves basal, pinnati- 

 fid or pinnately-toothed. Calyx-tube linear-funnelform, the segments shorter 



