aiii 
ASTER RECTIFOLIUS 285 
abrupt apex, crenate-serrate margins, and deep, broad securiform 
sinus, the sinus overlapping in growth, with unequal pendant basal 
lobes of lop-side effect. 
Leaf-form rather narrow, oblong-cordate, short-acuminate, with 
deep broad sinus, the sides parallel or somewhat s o, in extreme 
cases parallel from the bottom at the basal lobes for two-thirds the 
length; or often with swelling sides not properly parallel, slightly ` 
curved from just above a more rounded base; the upper third of 
ee 4f 
X9 Aster rectifolius 
Fic, 65. 
the last somewhat triangular and straight-acute. Some radicals 
and several similar lower caulines develop this form completely, 
others approximate it, passing soon into oblong-ovate and to cor- 
date-triangular, still retaining a broad shallow base ; axiles oblong- 
lanceolate, acuminate, closely low-serrate, thin, 4 x 2 in., or less, 
with truncate base and winged petiole 1 in. long passing rapidly 
. to ovate-lanceolate and lanceolate, m sessi taper base 2 or 3 
in. by 24 in. Rameals 3 or 4, iri y elliptic-lanceolate, serru- 
e 
