330 DESCRIPTION OF ASTERS; MACROPHYLLI 
57. Aster orbicularis sp. nov. 
Low, purplish-stemmed plants with small spongy rugose leaves 
downy beneath, broad short leaf-form, subserrulate teeth, deep 
narrow sinus, pale-streak close-parallel wide-spreading veins, 
gradually transitional leaf-series with apiculate apex, short peti- 
oles; high-dome inflorescence, high-angled branching, and green 
ovate-oblong chief bracts. 
Name, L., from the leaf-form, suborbicular or at least broad and short. 
Fig. 77, from plant of L. Champlain bluff below Plattsburg, N. Y., Au. 31, 
'97, in hb. Bu.; d, radicals from plant of Bar Harbor, Me., Au. 26, ' 99, coll. Bick- 
nell, in hb. Bu. 
Stem terete, stout, brittle, glabrate below, above densely 
clothed with glandular to- 
AE. mentum or with the same 
E UR much surpassed by downy 
ap. and ves hair. 
EN P Leaf-form orbicular or 
^| p at least broad and short, 
N l small, 3 to 4% in. long and 
broad, apiculate by a sud- 
den obtuse or sometimes 
acute contraction, the sinus 
deep, narrow, somewhat 
overlapping, slightly or not 
at all enlarged within, its 
depth often 1% the length 
of the leaf. Texture thick, 
dry and spongy; slightly 
roughened above when dry 
and rough-bristly beneath. 
Radicals either of the 
normal leaf-type or often 
with broad shallow sinus 
and deltoid-cordate outline ; 
others in more luxuriant 
growth are elliptical and 
Aster orbicularig 5:9 A non-cordate 
FiG. 77. 
w^ |, 
Acum 
Veins remarkably pale, 
showing as pallid streaks 
on the apple-green leaf, very close together and directed from the 
mid rib strongly toward the margin. Glands dark, capitate on 
stalks 3—10 or even 15 times as long as the gland-breadth. 
