78 NORTH AMERICAN FLORA [Volume 25 



near the base of the plant, alternate above ; the blades obovate to elliptic or oblong, 3-9 

 mm. long, entire, pubescent or nearly glabrous, acute ; bracts lanceolate, glandular-toothed ; 

 outer sepals lanceolate, becoming 3.5 mm. long, acute, evenly glandular-toothed ; inner 

 sepals lanceolate, acute or short-acuminate, more finely toothed than the outer ; petals 

 yellow ; filaments pubescent at the base ; staminodia 2-lobed, ciliate ; ovary pubescent ; 

 styles distinct, glabrous ; capsules ovoid, about 1.5 mm. long, surpassed by the sepals. 



Type locality : Near Jalapa, Mexico. 

 Distribution : Mexico. 



26. Cathartolinum digynum (A. Gray) Small. 



Limtm digynum A. Gray, Proc. Am. Acad. 7: 334. 1868. 



Annual, glabrous, pale-green or glaucescent, the stems usually simple at the base, 

 corymbosely branched above, 0.5-4 dm. tall, striate, the branches of the inflorescence rather 

 stiff ; leaves few, mainly alternate, erect or ascending, the blades spatulate near the base of 

 the stem to elliptic or oblong above, 0.7-2.8 cm. long, acute or abruptly pointed, entire, 

 sessile ; bracts much smaller than the leaves, serrate ; outer sepals ovate, 3 mm. long, incised 

 or incised-toothed, the teeth gland-tipped ; inner sepals smaller than the outer, lanceolate 

 to ovate-lanceolate, glandular-toothed, sometimes rather coarsely so ; petals yellow ; fila- 

 ments lanceolate, glabrous ; staminodia wanting ; styles 2, united to below the middle ; 

 capsules ovoid, about 2 mm. long, surpassed by the sepals. 



Ty'PE LOCALITY' : Mariposa Trail, Yosemite Valley, California,, 

 Distribution : Washington to middle California. 



27. Cathartolinum sulcatum (Riddell) Small. 



Linum sulcatum Riddell, Suppl. Cat. Ohio PI. 10. 1836. 

 I, mum Bootlii Planch. Lond. Jour. Eot. 7: 475. 1848. 

 ? Linum simplex Wood, Bot. & Fl. 66. 1870. 



Annual, pale-green, glabrous, the stems erect, simple below or branched at the base, 

 and corymbose above, the branches erect or ascending, sharply angled or winged ; leaves 

 rather numerous, erector ascending, rather early deciduous, the blades firm, linear to nar- 

 rowly linear-lanceolate, 0.8-2.5 cm. long, acute or acuminate, entire or nearly so, sessile ; 

 bracts subulate, glandular-toothed ; outer sepals lanceolate, 5-6 mm. long, rather finely 

 glandular-toothed, except near the acuminate tip and the base ; inner sepals slightly 

 shorter than the outer, more finely and copiously toothed and more decidedly acuminate ; 

 petals yellow ; filaments subulate ; staminodia wanting, or minute ; styles united to below 

 the middle; capsules spheroidal about 3 mm. long, much surpassed by the sepals. 



Type locality : Dover, Tuscarawas County, Ohio. 



Distribution : Ontario to Manitoba, Georgia, and Texas. 



Illustration : Britt. & Brown, 111. Fl./. 2264. 



28. Cathartolinum Harperi Small. 



Linum Harperi Small, Fl. SE. U. S. 663. 1903. 



Annual, bright-green, glabrous, the stems erect, 3-8 dm. tall, simple or sparingly 

 branched at the base, usually fastigiately branched above and sometimes corymbose at the 

 very top, prominently angled ; leaves rather few, ascending or erect, rather persistent, the 

 blades firm, oblanceolate or spatulate near the base of the stem, narrowly linear above, 

 0.5-2 cm. long, acute or sharply acuminate, entire, sessile ; bracts subulate, glandular- 

 toothed ; outer sepals oblong-lanceolate, 4 mm. long, acuminate, very coarsely toothed, 

 the teeth spreading or recurved ; inner sepals somewhat shorter than the outer, more de- 

 cidedly acuminate and more closely and finely toothed ; petals yellow ; filaments subulate, 

 often pubescent at the base ; staminodia wanting; capsules ovoid, 2.5-3 mm. long, nearly 

 as long as the sepals. 



Type locality: Sumter County, Georgia. 



Distribution : Georgia and Florida. 



29. Cathartolinum flagellare Small, sp. nov. 

 Perennial (?), pale-green or somewhat glaucous, glabrous, the stems more or less 

 spreading, with long irregular branches above, the branches striate-angled ; leaves rather 



