ASTER LISTRIFORMIS 195 
— Springing out of rich crevices in gneissic cliffs under deep 
shade, or in rich soil of banks or glens, near N. Y. City in N. Y. 
and N. J.,in late September. Profuse-blooming plants sometimes 
produce from 100 to 200 heads, all simultaneously in flower. 
N. = vic., Eastchester, Seton Falls, Se. 24, 1900. Bryn Mawr Fark, wooded 
summit, '98, '99, 1900, 1903. Split Rocks, south end, Se. 25, '97, ; b nkside, 
north end, Se. 15, 1903, Hillview, Se. 22, 1900. Vault Hill, nearly ii basta: June 
1905. 
N. J., Palisades, Undercliff, Violaris-corner, Se. 29, '97, Se. 12, 98, young 
patch of very many plants, destroyed by mowing soon after. 
24° Helioscopian form, with inflorescence (in parts or in whole) 
continuously sympodial and repeatedly suborbicularly tribracteate, 
suggesting in effect the inflorescence of Euphorbia Helioscopia. The 
most extreme form of the species, highly refracted, and usually with 
the listriform leaves numerous. The sympodial inflorescence 
sometimes follows upon accidental loss of the main stem but more 
often consists of continuous arrest of the growth-impulse, appar- 
ently independent of any external influence. Repeated growth of 
this kind causes many inflorescences when pressed to resemble 
Mollugo verticillata. Stimulus of light from above acting on a 
plant, growing at the base of a cit: between the cliff and trees, 
accounts for this only in part, as it did not similarly affect nu- 
merous other examples of the Divaricati growing in company with 
this. 
Vith pae iraque 2 feet high, near Vonkers, N. Y., beneath Split Rocks, 
24° Eur form. Peduncles and pedicels excessively wide- 
spread, refracted as in the preceding, the inflorescence in one 
plant (springing from rich soil lodged in a stump) becoming 2 ft. 
broad and 2 ft. high. Branching often quite largely sympodial. 
Unlike the preceding in developing few listriform leaves or sub- 
circular bractlets 
N. Y, vie. pow Mawr Park, at several places; beneath Split Rocks, south 
end, Se. 25, 97; middie, Se. 28, 1900; north end, Se. 15, 1900; Slab-stump, Se. 19, 
; Hillview, Se. 15, 97. 
24* Virescent form. Dark green, with green stem, and leafy 
inflorescence : result of overfeeding or of loosened soil, producing 
numerous enlarged limp sabori. rameals, some of which oc- 
casionally develop into the axile leaf-form, — except that the 
base continues rounded or somewhat tapering. Late-flowering 
pants, and, perhaps in consequence of this, apt to lack crimson 
n rays and disks, and developing some green in the rays instead. 
N. Y. vic., Yonkers, Park Hill, Oc. 10, '98; Bryn Mawr Park, Oc. 21, ’98. 
