ASTER DIVARICATUS FONTINALIS 135 
Radicals, while very thin and of a tender tissue-like texture, 
are occasionally roughened with scattered bristles on the back. 
Their teeth are close and mostly outflung or couchant, but some- 
times straight-acuminate ; each vein is forward-dissected and at 
length incurved ; unlike the somewhat similar late sprouts of A. 
umbelliformis and A. curvescens, in which the radicals are of a 
thicker denser texture, their veins more straight and outward bent, 
their teeth more remote, curvescent or even crenate, In either 
case an additional cluster resembling radicals is sometimes borne 
high above the ground 
Caulines little developed, mostly as the radicals, or a few cor- 
date in outline with strong sinus and teeth. Rameals ovate-oblong 
or triangular-oblong, often quite large. 
Bracts of coriaceous texture, narrow, rather uniform; unlike 
those of late sprout-forms of A. umbelliformis in having a little 
vestigial ciliation, the back curved (not flat), and strongly lined by 
the narrow midrib, and a blunt-tapered apex (not sharp and 
straight-tapered). They have much less color at the green tip, 
and are so stiff as to be always erect. 
Perhaps all specimens of fontinalis owe their large radicals to 
hybridizing with A. umbelliformis which sometimes grows with 
them. If such a hybrid, A. divaricatus must be strongly prepotent 
in it. Other possible hybrids between A. divaricatus and A. 
umbelliformis also occur, both at my Connecticut locality and 
also on the Potomac; but this second set of hybrids shows a 
greater likeness to A. umbelliformis than to A. divaricatus and will 
be referred to under the former species. 
Examples : 
Conn., AMianns R.. at Riverside, grassy ditch by r. r., sete i15 
N. Y. , Inwood, grassy bank of Hudson R., Oc. 16, '98, Bi., m 13, "00; 
Bu. Yonkers, ‘Hillview , Oc. 26, "97, Oc. 22, 1900. S. {a raid bank, Oc. 17, 
'96. Glenpark, Él lia roadside, edge of woods, a 25,'98, Bi, '* with heads 
I2 to 16 exe ac 
:5 pom Onteora Mt., Se. 18, '91, 4. M. Vail in hb. N. Y. Bot. 
Gar.; iha Se. 7, '98, 
S MDC at Kirk: Gold mine, above Great Falls, ccm Oc. EL, "90. 
D. C., Rock Cr., parapet, near Pierce's Mill, Oc. 5, '87 
2. Aster viridis Nees in herb. 
Plants resembling A. divaricatus in inflorescence-characters, 
stem and stem-leaves, but bearing many large coarse rough radi- 
cals like A. macrophyllus and usually with numerous large oval- 
rhomboid rameals like neither species. 
