M els ore eT 
ASTER CLAYTONI 291 
Intermediate forms or perhaps hybrids of A. Clayton with other 
species include : 
30" A. CZ. A. divaricatus ; inflorescence and leaf-form verg- 
ing toward the latter, bracts nearly gin broad like the former and 
sublingual. Paltsades, Se. 14, '99, 
Sot opo. rupicola ; some A leaves like the latter 
in leaf-form and with broad shallow curving sinus ; upper part of 
the plant resembling the former. Palisades, Se. 14, '99. 
30" A. CL A. argillarius; little leaves Vesta the 
latter; bracts as in the former. Palisades, Se. 14, '99, etc., 
numerous, 
307 A. CL A. mollescens ; with habit, yellow rootstock 
and narrowed inflorescence, of latter species ; but sharp sinus, and 
non-succulent leaves of the former. Split Rocks, Se. 18, '97, Se. 
27, '97, Se. '98, '99, 1900; formerly abundant; July 3, 1900, 
ioni 11 leaves on stem 9 inches high; and Saar leaves, 
Pg in. high, oval-orbicular ; with later radicals oval, 1 x 3% i 
30" 4. C1. > A. ardens ; profuse diffused habit ; large ets 
about midway between the two types; Bryn Mawr Park, grassy 
ledge, Se. 25, 97; at another rock, Se. 16, ’99; Split Rocks, SG 
25, '97. 
30" A. CL A. atrovirens ; all peduncles abbreviated ; but 
pace as any A. Claytont. At Ft. Washington, Oc. 6, '98. 
* A. CL. > A. ebeneus ; leaves like the latter, but with the 
narrow sinus of A. Claytoni; with both. Ft. Washington, Oc. 6, 
Oo? A. CL > A. divaricatus deltoideus ; leaves dark green, with 
more truncate base than normal to A. Claytoni ; occasionally JV. 
¥. wie. 
30” A. Claytoni x A. lateriflorus; probable hybrid. Late 
plant of Nov. 4,’96, on Palisade rock-face, near the top; with 
long oblanceolate sharp dentate radicals resembling A. /ateriflorus ; 
and heads, bracts and branching somewhat of A. Claytoni ; rays 
yellowish, by virescence. 
HISTORY oF ASTER CLAYTONI 
1755. It was apparently in this year that the type specimen of 
A. Claytoni was forwarded as “no. 767," with description, by 
Clayton to Gronovius at Leyden, resulting in its inclusion, 1762, 
by the younger Gronovius in the 2d edition of the Flora 
Virginica. Clayton seems to have failed, on account of his 
locality, near the sea, to discover this or any very near ally in 
time for publication in the Flora Virginica, Part I, 1739, or in 
