Ordeb 52.— ONAGRACEiE. 363 



4 CTi. plimila L. Low, pubescent ; st ascending ; Its. lanceolate, entire, obtuse, 

 attenuate at base ; spike loose, leafy, naked below ; cat tube shorter than the sui- 

 sessile, oblong-clavate, angular ovary. — @ A small, half-erect plant, common in 

 grass lands, Can. to S. Car. St. 6 to 10' long, round, slender, simple. Lvs. 1 to 

 li' by 2 to 3", radical ones spatulato, petiolate. Fls. yellow, 6'' diam., openinij 

 in succession, 1 or 2 at a time. Jn., Aug. (CE. pusilla ? Mx.) 



5 CE. ohrysSntha llx. St. ascendiog, slender; fia. small, crowded, spicate; 

 ccU. lube equaling in length the ovary, longer than the segm. ; petals broadly obo- 

 vate, emarginate, longer than tho stamens ; caps, smooth, pedicellate, clavate, the 

 alternate angles slightly winged. — '$j 'Westem'N'. Y. to Mich. St. 12 to 18' long, 

 purple. Lvs. lanceolate, obtuse, attenuate at base, denticulate, radical onej 

 spatulate. Fls. 5'' diam., orange-yellow. Ju., Jl. ' 



6 CE. fruticdsa L. St. pubescent or hirsute ; lvs. oblong-lanceolate, repand-dcnti- 

 culate; rao. leafy or naked below, coryrpbed; caps, oblong-clavate, 4-winged, 

 wilh intermediate ribs, pedicellate. — 11 In sterile soils, Mass., Conn., N. Y. to 

 Fla. and W. States. St. hard, rigid (not shrubby), 1 to 3f high. Lvs. variable 

 in pubescence, form and size, 1 to 3' by 3 to 8", sessile, minutely punctate. Fls. 

 few or many, IJ' diam., in a terminal, braoteate, mostly pedunculate raceme. 

 Cal. tube longer than the ovary. Petals broad-obcordate, yellow. Jn., Aug. 



0. AMBIGUA. Lvs. membranous ; petals longer than broad. 



7 CB. riparia Nutt. Nearly glabrous ; stem erect, wilh slender branches, usually 

 purple and polished; lvs. linear-lanceolate, acutish at both ends, petiolate, repand- 

 dentioulato, coriaceous ; fls. large, loosely oorymbed, at length raeemed ; cal. tube 

 nearly twice longer than the pedioelled ovary ; caps, clavate, scarcely winged. — 

 @ Along rivers, N. J. to Ha. and Ala. St. 1 to 2f high. Lvs. 2 to 4' long. FK. 

 aa largo as in No. 6. A handsome species. May, Jn. 



8 CE. linearis Mx. Hoary puberulent; St. slender, erect, simple or few- 

 branched; lvs. linear, subentire, obtuse, the lowest linear-spatulate ; fls. large, 

 corymbed at the summit of the branches, tube of the calyx somewhat longer than 

 tho pedicellate ovary; fr. obovato, scarcely winged. — If Montauk Pomt to K. 

 Car. (Miss Carpenter), and Ala. St. 12 to 18' high. Lvs. 1 to 2' long. FIf. 

 much as in No. 1. May, Jl. 



9 CE. glaiioa Mx. Glabrous and glaucous ; st. erect, with few, slender branches 

 above ; lvs. ovate, sessile, acute or acuminate, obscurely denticulate ; fls. largo, 

 clustered at the ends of the branches ; calyx tube 3 or i times the length of the 

 short, pedicellate ovary ; caps, oval, 4-winged above. — Rock Castle Co. Ky. to 

 Va. and N. Car. St. stout, 2 to 3f high, purplish. Lvs. 2 to 3' long, often lan- 

 ceolate. Caps. 4 to 5" by 2 to 3''. May— JL 



10 CE. MissouriSnsis Sms. Simple, decumbent; lvs. coriaceous; lanceolate, 

 acute, or short-acuminate, petiolate, subentire, downy canescent when young ; fis. 

 very. largo, axillary; cal. tube 3 or 4 times longer than the downy-canescent 

 ovary ; caps, very large, oval, depressed, with 4 broad-winged margins. — Dry 

 hills. Mo. Remarkable for the magnitude of its fls. and fruit. Petals yellow, 

 expanding 4 inches. CaL tube 4 to T long. Caps. 2' long. Sds. largo, crested, 

 in one row in each cell. Jl. — Oct. f 



CB. specidaa of Ark. and Tox. is a splendid species, with white or roseate 

 fls., fme in cultivation. 



GAU^RA, L. (Gr. yavpog, superb.) Calyx tuLe much prolonged 

 above the ovary, cylindric, limb 4-clcft ; petals 4, imgniculate, some- 

 what unequal, inserted into the tube ; stamens 8, declinate, alternate 

 ones a little shorter ; ovary oblong, 4-celled, one only proving fruitful, 

 imt usually by abortion, 1-celled, 1 to 4-seeded. — Herbaceous or shrubby. 

 Lvs. alternate. Fls. white and red, rarely trimerous. 



1 Gr. biennis L. St. branched, pubescent ; lvs. lanceolate, oblong, remotely den- 

 tate ; spike crowded ; cal. tube as long as the segm,. ; petals rather declinate, and 

 shorter than the sepals ; fr. aubsessile, slightly acuminate, 8-ritabed, alternate ribs 

 minute.— A beautiful biennial, on the dry banks of streams. Can. to G-a., rare. 

 St. 3 to 5f high. Lvs. ses.sile, pale green, acute at each end. Fls. numerous, 



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