20 
Schaupp. This discovery adds one of the species of the flora of 
Arizona and New Mexico to that of the Southeastern United 
States. An interesting leap from the plains of New Mexico to 
the valley of the Colorado River is Middle Texas. 
HiIERACIUM SCRIBNERI N. Sp. 
Annual or perennial, somewhat glaucescent throughout. Stem 
4-5 dm. tall, erect, sparingly or diffusely branched above, leafy 
throughout, glabrous or somewhat pubescent below, with long, 
spreading, silvery hairs, often glaucous, more or less channeled 
and flexuous; peduncles and pedicels glabrous or densely glandu- 
lar; leaves diverse in form, the lowest oblong or oblong-spatulate, 
5-8 cm. long, on winged petioles, acute, acuminate at the base, the 
remaining oblanceolate, oblong, narrowly or linear-lanceolate, 4— 
‘12 cm. long, sometimes even fiddle-shaped, sessile or inclined to 
be decurrent, acute, all nearly glabrous on both surfaces, with a - 
few scattered spine-like teeth, between which on and near the 
margin are few or numerous spreading silvery hairs; inflorescence 
more or less corymbose-paniculate; heads large, bright yellow, 
2-2¥% cm. broad; involucre nearly glabrous or glandular ; princi- 
pal bracts I cm. long, linear-subulate, acuminate, sometimes dilated 
at the base, smaller bracts %4—% shorter; achene columnar, some- 
times slightly constricted under “the i inconspicuous rim at the sum- 
mit, rather inconspicuously ribbed; ribs barbed upward; pappus 
not exceeding the involucral bracts, rather light colored. scams 
172). 
Collected on Lookout Mountain, Tennessee, May 21, 1890, by 
Prof. F. Lamson-Scribner. Notwithstanding the early date the 
plants are mature and bear plenty of ripe achenes. 
The specimens on which the above species is founded were 
distributed as Hieracium paniculatum, which species, however, it 
does not very closely resemble. It is more nearly related to H. 
venosum or Hf, Marianum, although abundantly distinct from 
either. From the former species it may be separated on sight by — 
the leafy stem and pappus shorter than the principal involucral 
scales (in 7. venosum the pappus is longer than the principal scales _ 
of the involucre, an important and striking character which seems. : 
to have been overlooked); from H. Marianum it differs in the more 
leafy stem and the usually diffuse, leafy branches. 
