364 DESCRIPTION OF ASTERS; MACROPHYLLI 
involucre bright green at base, cylindrical or urceolate in flower, 
broadly turbinate when pressed. 
Bracts thickened, oblong to linear-attenuate, triseriately 
chequered, very unequal in length, obtuse and close-appressed, 
all green with pale edges and dark tips in life; the middle and 
inner ones silvery green and with mingled brown at the midrib 
when dry, now So esi but still obtuse, subciliate, and 
with very narrow scarious brownish margin; the very lowest 
bracts puberulent and ae acutish, all laterally-expanded at the 
concealed base 
Rays greatly tapered or pedicelled at the base, entire or but 
obscurely notched at the rounded apex, 13-20 in number, repeat- 
edly 18 or r9 on central heads, changing from deep violet to 
whitish. Of five heads on one branch at once, the youngest was 
a beautiful full violet; the next pale violet, with reddish-brown 
disk ; the next two with but the merest trace of violet, and begin- 
ning to recurve; the disks a pale reddish brown; the oldest was 
hung with collapsed flat drooping and curling rays, now white. 
with their disk pale brown. Old heads are remarkable for the 
diverse way in which each straggling ray projects and droops. 
Rays in the best developed cases reach $9, in. long and 4 in. 
broad, meeting each other or slipping under at base, all ‘paler 
towards their base and at first making a perfectly flat pale halo 
within the violet (as in A. Novi-Belgii) around the perfectly flat 
yellow disk of the same level. Disk much elevated with age, but 
remarkable among its allies for attaining only a pale degree of the 
usual reddish-brown. 
— Unlike A. iostemma in its sympodial tendency, silvery chief 
bracts, and details of leaf-form. Unlike A. nobilis in these partic- 
ulars, with much more glandular hair and-much less strigose hair. 
Unlike A. roscidus beside which it grows, in having rays narrower 
but more numerous and longer, heads % to 1% in. broader, but 
flowering later; nutty odor and glandular viscidity comparatively 
slight even on young surfaces ; rootstocks not stout nor woody 
nor closely-branched ; radicals later in spring ; teeth shallower ; 
leaf-form, texture, and color, different and paler. 
— Development. Young radicals well-developed, quite roscid, 
roughish to touch, and 10 inches high by May 13 ('99), and at 
that time with some hair under the leaves, and with petioles glan- 
dular and subciliate. Primordials remarkable for rounded ends, 
thick, still green or slightly browned, oblong or cordate-oval, 
about I x 34 in., or half that size, finely denticulate-crenate. One 
