OF ARTS AND SCIENCES. 153 



branched : flowers few, long-peduncled : leaves linear, acute, 2-4 

 inches in length: corolla 1-1 i inches in diameter; petals obovate, 

 dark purplish red, somewhat lighter toward the claw, and with small 

 black spots : calyx teeth usually an inch or more in length. — Spec. 

 435. Lychnis Githago, Scop. Y\. Carn. ed. 2, i. 310. Githago sege- 

 tum, Desf. 1. c. 266. 



15. DRYMARIA, Willd, (Name from 8pv/Aos, an oak copse; 

 some species having been supposed to prefer that habitat.) — A group 

 of low diffusely branched plants, chiefly of the New World ; our species 

 being weak annuals. — Willd. in Roem. & Sch. Syst. v. p. xxxi ; 

 HBK. Nov. Gen. et Sp. vi. 21, t. 515, 516 ; DC. Prodr. i. 395; Wats. 

 Bibl. Index, 102, & Proc. Am. Acad. xvii. 327-329. 



* Cauline leaves rather broadly ovate. 



D. Fendleri, Wats. An erect annual, 2-10 inches high: stems, 

 peduncles, and petioles finely glandular-pubescent : leaves membrana- 

 ceous, reniform-ovate, subcordate, abruptly acuminate, nearly smooth, 

 4—5 lines long, on slender petioles half their length : flowers aggre- 

 gated iu terminal fascicles, or single in the forks ; sepals herbaceous, 

 lanceolate, acuminate, 1-3-nerved. — Proc. Am. Acad. xvii. 328. 

 £>. cordata, Gray, PI. Fendl. 13. D. gIa?iduIosa, Gray, PI. Wright, 

 ii. 18; Torr. Pacif. R. Rep. iv. 70, & Bot. Mex. Bound. 37. —New 

 Mexico and Arizona. 



D. holosteoides, Bknth. Prostrate, smooth and somewhat 

 glaucous : stems numerous, each bearing 2-3 remote fascicles of leaves 

 and flowers : leaves appearing quaternate, ovate, obtuse, thickish, 3-5- 

 nerved, 3-6 lines long, rather abruptly contracted into a slender 

 petiole 2-3 lines in length : pedicels equalling or slightly exceeding 

 the petioles, 1-flowered : sepals obtusish, 1| lines long, with con- 

 spicuous membranous margins : seeds black, hooked, or somewhat 

 cocleate. — Bot. Sulph. 16; Wats. Bibl. Index, 103. — Dry bed of 

 Tarlinga Creek, W. Texas, Havard. (Lower Calif.) 



* * Cauline leaves linear, pseudoverticillate. 



D. spergnloides, Gray. Covered with a fine grayish pubescence 

 or quite glabrous : radical leaves spatulate, fugacious : stem erect, with 

 spreading branches and pseudoverticels of 4-8 sessile narrow obtuse 

 slightly fleshy leaves 5-10 lines long, \ line in breadth : inflores- 

 cence diffuse; flowers pedicellate. — PI. Fendl. 11, «fe PI. Wright. 

 ii. 19; Torr. Bot. Mex. Bound. 37. — Cornfields, etc., Texas,' near 

 Presidio del Norte, Parry; New Mexico, Fendler, Wright ; Arizona, 

 Palmer, Lemmon. 



