ASTER CURVESCENS 253 
40° Pedunculate. Tall stiff slender plants, differing in thei 
numerous small ovate short-stalked upper caulines ; by this arrest 
of leaf-size the upper part of the stem becoming a bracteose pedun- 
cle in appearance. 
With the type, near Washington, D. C., Bu., Phoenixville, Pa., W. K. 
Fisher, etc 
o. A. curvescens x A. divaricatus, a probable hybrid; like 
the pe in its leafy-bracteate enlarged inflorescence, flexed stem, 
more salient teeth ; otherwise chiefly like the preceding. 
Va., Potomac bank, Spout Run, Oc. 9, ’91, and Violet Rock, Oc. 17,’91, Bu. 
. curvescens X A. macrophyllus, a probable hybrid, 
chiefly like the former parent, but with its thick hispidulous leaves, 
its bracts, inflorescence form and abundant large truncate rameals 
seemingly due to the latter. 
At the localities of No. 404. 
Subdivision B. INNER BRACTS WITH OBVIOUS MIDRIB. 
Species 41~43. 
41. Aster oviformis sp. nov. 
Slender plants with large, thin, dark, oval-acute leaves, close- 
crenate and with sharp sinus, and irregular flattish-topped inflor- 
escence, linear-oblong rays and bracts. 
Name, L., from the leaf-form, like an = sag! one = gradually reduced. 
FIG. 54, m from Yonkers, N. Y., - 3, 99, hb. Su., % natl. siz 
a ie Are shown in jail group, 5 2i in sat and middle aati. 
rrant ra 
IG. x Jb IO, radicals and single head, etc., from Potomac R., '98, in 
hb. Bu. 
A. curvescens oviformis Burgess in Br. and Br. Ill. FL, 3: 359 (1898), with 
original fend: 
“Stem about 2% ft. high, leafy ; leaves dull green, not acumi- 
nate, very thin, but rough, ovate, cordate with a deep narrow 
sinus, 8 in. long by 4% wide, or smaller; some of the bracts 
broader and green-tipped ; inflorescence smaller and less [re gu- 
larly] branched [than in A. curvescens]. Range of the preceding." 
Teeth very shallow, crenate with stiff abrupt mucro. 
Leaves extremely thin and tissue-like, lightly-pubescent on the 
veins beneath ; the much-appressed bristles above, very slender, 
sharp and delicate ; the sinus commonly overlapped. — Leaf-devel- 
opment shows the unfolding leaves much narrower and much more 
