TRELEASE A REVISION OF N. AM. LINACEyE. 15 



? L. simplex, \\'ood. — Annual, glabrous, a foot or two high; stem sub- 

 simple below, corymbosely branched above, rather prominently wing- 

 angled ; leaves alternate, lanceolate, very acuce, 3-nerved, the lateral veins 

 marginal: the lower entire, the uppermost smaller and glandular-serru- 

 late (about 2X-omm.); stipules represented by a pair of subglobose 

 glands ; flowers mostly corymbed at the ends of the branches ; sepals 

 lanceolate, very acute, keeled and with a pair of more or less prominent 

 lateral nerves, conspicuously glandular-serrulate, occasionally elongated 

 and leaf-like in the lower flowers ; petals spatulate, entire, slightly bearded 

 at base, about 7 mm. long, one-half longer than the calyx; stamens and 

 pistil about equaling the calyx; styles distinct to or below the middle ; 

 capsule ovoid, rather acute, about 3 mm. long, rather shorter than the 

 calyx ; false septa incomplete above and ciliate. — Dry soil. Eastern Canada 

 to Saskatchewan, south to Texas. An Arkansas specimen collected by 

 Gattinger is apparently destitute of stipular glands. 



8. L. RUPESTRE, Engelm. PI. Lindheimer. 232. L. Boottii, var. ru- 

 jJ^-s/z-e, Engelm. — Perennial, with slender cespitose stems a foot or two 

 high, subsimple below, corymbose above, rather prominently angled ; 

 leaves more or less opposite at base, alternate above, linear-acute, one- 

 nerved (1-2 X 10-15 mm.), sparingly and minutely hairy on the margins 

 and midrib below, the upper remote, appressed, glandular-serrulate; 

 stipular glands small; sepals ovate, very acute or almost bristle- 

 pointed, keeled and with a pair of fainter lateral nerves, glandular-ser-u- 

 late; petals spatulate, truncate or emarginate, 5-10 mm. long, mostly 

 quadruple the length of the calyx, bearded at base, bright yellow, or pale 

 when large; stamens and pistil about twice as long as the calyx ; styles 

 distinct; capsule globose-ovoid, about equaling the calyx, its false septa 

 incomplete and ciliate except at base. — New Mexico and Texas to 

 Mexico. 



9. L. ARiSTATUM, Engelm. Wislizenus's Rep. 17. L. rtgidum, in part, 

 of various collections. — Green or somewhat gray, a span to a foot high, 

 much branched toward the base, the glabrous or puberulent branches 

 slender, ascending, somewhat angled; leaves erect, narrow (1X5-8 mm.), 

 tapering to an awn-tipped point, the upper glandular-serrulate; stipular 

 glands small ; flowers rather few, subsolitary at the ends of the branches, 

 their pedicels as much as 15 mm. long; sepals lanceolate, very acute and 

 bristle-pointed, rather thin, with a promment midvein and occasionally 

 two lateral ribs above, their broadly scarious margins glandular-ciliate or 

 mostly lacerate; petals pale and very delicate, cuneate-spatulate, 12-15 

 mm. long, one-half longer than the calyx, bearded at base; stamens and 

 pistil about as long as the sepals; styles distinct for about i mm. at top; 

 capsule ovoid, half or two-thirds as long as the caly.<, lo-celled, the false 

 septa membranaceous except for a short distance from the outer margins, 

 slightly ciliate within. — Southern Utah, Arizona and New Mexico. 

 Closely related to L. rigidum. 



