362 FLORA OF TEXAS. 



K. Carolinia^^a, Nutt. Stem short; scapes pubescent 

 or somewliat hispid near the apex ; leaves linear-lanceolate, 

 acute at each end, entire or sparingly toothed, or the upper 

 ones variously lobed ; scapes 3-12' high. 



HIERACIUM, Tourn. 



Heads many-flowered; scales of the involucre imbricated, 

 or in 2 rows, the outer row short ; recej^tacle nearly naked ; 

 achenia not beaked, commonly terete or spindle-shaped, 

 ribbed; pappus a single row of persistent brownish-white 

 hairs. — Perennial herbs, with alternate entire or toothed 

 leaves, and single, corymbose, or panicled heads of yellow 

 flowers. Involucre, in our species, in 2 rows, the outer 

 short and bract-like. 



H. SCABRUM, Michx. Stem stout, leafy, hirsute below, 

 rough above; panicle somewhat corymbose; leaves oval, 

 sessile, the lowest spatulate-oblong, hirsute ; peduncles and 

 involucre tomentose and glandular-hispid ; achenia cylin- 

 drical. Stem l°-3° high ; heads large, many-flowered. 



H. Gronovii, L. Stem leafy and hirsute below, naked 

 and smoother above; leaves entire or denticulate, hirsute, 

 the lowest spatulate-oblong, the upper small, sessile; pan- 

 icle narrow, elongated ; achenia narrowed upward. Stem 

 l°-2° high; lowest leaves spreading on the ground. 



NABALUS, Cass. 



Heads 5-20-flowered ; involucre cylindrical, composed of 

 5-14 linear scales, and several short exterior ones ; receptacle 

 naked; achenia linear-oblong or cylindrical, furrowed, 

 glabrous, not narrowed upward; 'pappus of numerous 

 straw-colored or brownish bristly hairs. — Perennial herhs, 

 with bitter tuberous roots, entire or variously lobed leaves, 

 and nodding heads of yellowish white or purplish /o?f;crc<?, 

 in short racemes or clusters. 



