350 DESCRIPTION OF ASTERS; MACROPHYLLI 
Lower caulines retaining the same leaf-type, or becoming 
symmetrical, gradually reduced and with greatly shortened narrow 
petioles. Middle and upper caulines ovate to lance-oblong, becom- 
ing long-acuminate, taper-wing based and serrulate. — Axiles 
lanceolate, sessile, elongated. Rameals similar but abruptly 
smaller. 
Inflorescence convex, dense or soon diffuse, its short rigid 
branches widely up-spreading. 
Bracts somewhat lingual, much as in A. roscidus, but with 
more curving sides, tending to be ovate-oblong, obtuse below, the 
middle becoming bevel-tipped, the inner narrow-oblong with 
slightly tapered, rounding apex. 
Rays pale lavender or soon white. 
— Leaves and inflorescence suggest a hybrid origin from 4. 
persaliens and A. densatus ; but against this supposition is the fact 
of numerous plants so occurring, all alike, and all vigorous, and 
their radicals unique in size, margins and details. 
From A. viridis, which it resembles in suggesting hybrid origin, 
it differs in much thinner, sharper-toothed leaves and wholly dif- 
ferent inflorescence. 
Habitat, dry openings along rocky woods, Maine to N. Y. 
Examples : 
Mai ** North Berwick, York Co., rocky open woods, Se. 26, '97 ; rays 
white’’; M. js Fernald in hb. Bu. 
. vic., Hastings, **edge of woods opening on dry field, Se. 5, '98," 
Bicknell in hb. Bu., in thinly grassy soil, numerous plants, with lavender rays; also, 
Hastings, dry shaded bank near Amackassin, some virescent rays remaining, Oc. 17, 
1905, Bu. 
Division B. IANTHINE MACROPHYLLI. 
Violet rays, turning pale or white. — Radicals apt to be 
smoother and longer-stalked than in the lilacine Wacrophyllt ; or 
otherwise very numerous and very short-stalked. Colonies apt to 
be smaller than in A. macrophyllus (except in A. quiescens). 
Leaves seldom of extremely rough or of flabby type, chiefly 
moderately rough and firm; usually not very thick in comparison 
with A. macrophyllus and A. roscidus, Glandular hair mostly of 
stub-form and less broadly capitate, more abundant than in A. 
macrophyllus, less so than in A. roscidus 
Subdivision A. 
Plants tall and robust, often 4 ft. or more; radicals large, 8 in. 
or less; aaja and strigose hair little developed below the 
inflorescence 66-70. 
