ASTER ARCUATUS 241 
Leaves deep-green, thickish, roughened when dry; veins 
inconspicuous ; teeth of serrate type, of moderate size, extending 
well around the basal lobes, reduced to slight serrulations on a 
few lowest leaves and on numerous small upper caulines. 
Leaf-form orbicular-acuminate or broadly ovate-acuminate ; 
with deep broad sinus often truncate-based within ; always strongly 
incurved before the short sharp acumination. Such leaves are the 
lower caulines, about 3 or 4 to a stem, larger than the others and 
giving the leaf-series its characteristic appearance ; about 2 x I 
in. upon sun-reached plants, 4 x 24 in. heavily-shaded plants, then 
thinner and usually not rough till d 
Lowest caulines longer in proportion and less remarkably 
broad, more like those of A. divaricatus L., smaller, 12 x I in. in 
sun, 4 x 2 in. in shade, subentire, with sinus not so larg 
Middle caulines broadly ovate-acuminate, little id from 
the characteristic lower caulines in size but much reduced in sinus, 
which has now become shallow and broad and then slight and 
sharp; 3 or 4 such leaves are usual. 
Upper caulines numerous, quickly or abruptly much reduced, 
ovate-acuminate with truncate or chiefly with rounded base, 1 x $ 
in. or less, finally tapered into a short-wing base. 
Axiles sessile, similar to the preceding in shape and size. 
Bracteals few and inconspicuous, ovate, oval, subcircular or 
reduced to discules. 
Petioles slender, very various in length, in the lowest leaves 
longer than the leaf-breadth, in the next lower leaves longer than 
half the leaf-breadth, in the remaining, shorter, disappearing halfway 
up the upper caulines, where short wing-petioles continue for 3 or 
4 more little leaves. 
Inflorescence small, rather compact and tangled, ip dun n 
convex, with widely divergent DONC pedicels about 3 i ^ 
Heads very small, 3 ie broad, 4 in. high, chiefly with 6 rays. 
Remoter heads become { in. broad, 2 in high, with 8 rays. Rays 
small, straight-sided, and oblong with slightly tapered apex, deep 
opaque white, soon becoming dull white, finally often virescent. 
Disks reddening, and finally maroon ; or with little red in the 
shade, where many change directly to brown, which in some is a 
ined raw umber, in others of the same clump, a deep maroon 
um 
di broad, rounded or truncate at the darker apex but green 
almost all over, thinnish, moderately ciliate. Inner bracts nar- 
rower, somewhat tapered but still obtuse, without green tips. 
— Remarkable for its very broad lower leaves, and their broad 
deep sinus ; for its numerous much-reduced upper leaves, and for 
