LINACEAE. 579 



Leaves crowded, oblong or linear, 6-40 mm. long, 1-4 mm. wide, acute or acutish, 

 3-5 -nerved; flowers 2.5-3.75 cm. broad; sepals oval, mainly obtuse, one-third or 

 one-fourth the length of the petals; stigmas shorter than the styles; capsule 

 broadly ovoid, obtuse, dehiscent, the septa ciliate. Plains, Manitoba to S. Dak., 

 Kans.. Tex., Ariz., Utah and Alaska. Summer. 



3. Linum Virginianum L. Wild or Slender Yellow Flax. (I. F. f. 

 2260.) Perennial by suckers, rather dark green, corymbose-paniculate above, 

 3-6 dm. high. Stem and branches slender, not stiff; flowering branches ascend- 

 ing or sometimes weak and recurved; leaves oblong or oblanceolate, i-nerved, 

 1.2-2.6 cm. long, 4-6 mm. wide, acute, or the lower opposite and spatulate, 

 obtuse; pedicels filiform, the lower 4-12 mm. long, longer than the calyx; flowers 

 6-S mm. broad; sepals ovate, acute, not ciliate, about equalling the depressed- 

 globose 10-celled capsule. In shaded situations. X. Eng. to Ga. June-Aug. 



4. Linum medium (Planch.) Britton. Stiff Yellow Flax. (I. F. f. 2261,) 

 Perennial by suckers; stems erect, striate, stiff, corymbosely branched above, the 

 branches erect-ascending both in flower and in fruit; leaves appressed-ascending, 

 the lowest commonly spatulate and opposite, the others lanceolate to linear-lanceo- 

 late, acute. 8-24 mm. long, I -4 mm. wide; pedicels I -6 mm. long, the lower rarely 

 longer than the calyx; sepals ovate, or ovate-lanceolate, acute, about equalling the 

 capsule. In dry soil. Ont. to Mass., Fla., Mo. and Tex. June-Aug. 



5. Linum Floridanum (Planch.) Trel. Florida Yellow Flax. (I. F. f. 

 2262.) Perennial; stem stiff, 4.5-7.5 dm. high, corymbosely branched above, the 

 branches erect-ascending, slightly angled. Leaves acute, the lowest mostly oppo- 

 site, narrowly oblong or oblanceolate, the others linear-lanceolate, appressed-as- 

 cending. alternate, 1-2 cm. long. 1-4 mm. wide; fruiting branches erect-ascending; 

 fruiting pedicels shorter than or little exceeding the calyx, or the lowest ones 

 slightly longer; sepals ovate, acute or acuminate, about equalling the capsule; 

 capsule ovoid, about 3 mm. long; petals twice as long as the calyx. 111. (accord- 

 ing to Trelease); Fla. to La. June-Aug. 



6. Linum striatum Walt. Ridged Yellow Flax. (I. F. f. 2263.) Per- 

 ennial, racemoseiy branched, light green and somewhat viscid. Leaves usually 

 opposite nearly up to the inflorescence, oblong; branches of the panicle short and 

 divergent; flowers small, often clustered; capsule subglobose, usually rather longer 

 than the sepals. In bogs and swamps, rarely in drier ground, Ont. to Conn., Fla., 

 Ky. , Ark. and Tex. Summer. 



7. Linum sulcatum Riddell. Grooved Yellow Flax. (I. F. f. 2264.) 

 Annual, 3-6 dm. high. Stem wing- angled and grooved, at least above; leaves 

 alternate, lanceolate or linear. 1.6-2.4 cm - l° n g> 2 ~3 mm - wide, 3-nerved, the 

 lower glabrous; sepals glandular-ciliate; stipules a pair of small globose dark- 

 colored glands; flowers racemose or corymbose, about 1.2 cm. broad; pedicels 2-8 

 mm. long; sepals lanceolate, acute, slightly longer than the ovoid, acute, incom- 

 pletely 10-celled pod; styles separate above the middle; septa of the capsule ciliate. 

 In dry soil, Ont. to Manitoba, Conn., Ga., Kans. and Texas. Summer. 



8. Linum rigidum Pursh. Large-flowered Yellow Flax. (I. F. f. 

 2265.) Perennial (?), 1.5-4 dm. high, glaucous, glabrous or puberulent. Branches 

 stiff, angular; leaves erect, linear or linear- lanceolate, 8-24 mm. long, 1-2 mm. 

 wide, acute or mucronate, the upper ones glandular-serrulate or ciliate; stipular 

 glands minute, globose, sometimes wanting; flowers yellow. 1. 8-3 cm. broad; sep- 

 als lanceolate, acute or awn-pointed, glandular-serrulate; petals cuneate-obovate, 

 twice the length of the sepals; styles separate only at the summit; capsule ovoid, 

 5-valved, shorter than the sepals. Prairies, S. Dak. to Manitoba, Mo., Tex., N. 

 Mex.. Ariz, and Mex. Summer. 



9. Linum catharticum L. Dwarf or Cathartic Flax. (I. F. f. 2266.) 

 Annual, slender, 7.5-20 cm. high. Leaves opposite, sessile, oval or somewhat 

 obovate, entire. 4-8 mm. long; flowers 4-6 mm. broad, on long slender erect or 

 ascending pedicels; sepals lanceolate, acute or acuminate; petals obovate; pod 

 small, globose. Along a low sandy seashore, Pictou, N. S. Apparently nat. from 

 Europe. July-Aug. 



