CARDUACEAE .. 1377 
axils, and with long and high inflorescence, small blue-violet heads and lozenge- 
tipped braets: stem about 12 dm. high, or more, brown, terete- striate, rough, 
with short scattered strigose hair above: leaves tending to o be narrowly lanceo- 
late i broad-based, slanting straight both ways from near the base, tending to 
e form a 
the fo e narrow s ad, abo ; very wly 
Ae Uds throu ugh the inflorescence; radicals small, short and broad, somewhat 
cordat av lower cauline leaves develop obscure cordation and 
; ram not cons ous, linear-aeute m appressed 
epis irregularly eiu mose, long rather narrow, dispro- 
portionately large for the plant; its branches tend to be spreading and short, 
ts peduncles long or at least inue. its heads me ss, its rays 
u ker than in typical A , undulatus —Dry hillsides, various provinces, Ala. 
A bie N. Y., and Conn.—Fall.—Peculiar in its strong tendency to be- 
o igiate, or eross-tied, i5 developing two conspicuous divaricate narrow- 
Ps d blades (branch- -form leaves) in the lower or middle axils of the 
eauliné leav 
29. A. triangularis Burgess. eod cinereous green, tall, robust, very rough, 
with little or no obvious hair, like A. corrigiatus; but with leave S ovate-tri- 
angular- Ries MEUM. thicker and ene a bur de acumina ation: stem dull 
reddish-bro mewhat terete, 9 dm lea ery numerous, 
sometimes folio osely corrigiate in ' the em pos not ‘ciliate, oe with slight 
short scattered strigose hair, on re upper surface close-set with pale slender 
rigid aculei rire away from the midrib and thickened at the base; leaf- 
form ovate-triangular, long- acuminate, suddenly gee at the sessile base, 
subelasping only: inflor e rather narrow, of loosely-ascending bra nches 
with a brushy top, uniformly ER a Or catenate 2 eonspieuous appressed 
ODE elliptie vaca like braeteals: heads : ligules of the ray pur- 
ple-blue: bracts of the involucre end -elliptie, pa tips apt to be of broad 
diamond form [ A. duis triangularis Burgess]—Open s Ead, slopes, vari- 
ous provinees, ‘S. C. to Ala. and N, Y.—Fa ll, 
30. A. claviger Burgess. Plant wand-like, apt to spring several from a com- 
mon base, with glandular pubescence along the middle of the stem, and wit 
leaves of a crisp firm texture: stem greenish, moderately and finely pubescent 
i iform 
2 
or ate, smo eye, about igh or more: leaves quite uniform; 
blades ovate-elliptie, thiekish sub-entire or crenulate, acute, chiefly with a short 
str t its base; the slight pubescence becoming a little 
rough in drying and the leaves spongy-coriaceous; a very few basal leaves cor- 
date: inflorescence irregular and narrow-elliptic or clavate, sometimes narrowly 
pyramidal: heads rather m ligules of the ray violet or purplish-violet: 
bracts linear-acute wit medium-sized tips broad-lanceolate to diamond- 
ae ; vui. red capitate prd hai E are mingled on the stem with dry 
trigose hair and also with broke oe a rigose hairs which become oa 
eee ‘thickened ; the de finitely c capitate glands are colored v violet, 
only slightly thieker than their stiff stub-like stalks.—Wo " borders, various 
provinees N of Coastal Plain, Ala. to N. Y. and Conn.—Fal 
3l. A. gracilescens ip a Plant slender and less pubescent, less rough 
and more thyrsoid than its congener A. undulatus: stem slender, ae 6 dm. 
high and somewhat ar CUM leaves quite nU bla pi la e and e nspicuous, 
thin, soft, elongate-lanceolate, chiefly sessile 12x 4e r less, erro soft- 
pube scent, not velve ris like A. undulat us, n a little iuh iin "ar ry, subentire, 
pale-green with paler midr E ; axiles narrow-ovate, rameals elliptie-linear or 
prea 
ve agi with a : 
ovoid o soid, with dis TER piste s 3 em. long or less: heads larger and 
meme re in its relative A, undulatus: bracts of die involucre linear- ‘elliptic, 
87 
