280 DESCRIPTION OF ASTERS; CURVESCENTES 
49° A. Schreberi x A. macrophyllus ; probable hybrid. Re- 
sembles the first-named parent in decomposite inflorescence, with 
long, stringy branches; and long, slim pedicels; and in general 
aspect. Resembles the second parent in thickness of the rough 
leaves, coarse heads and bracts, with some rays lavender and some 
glandular hair present on the pedicels. 
. C., Broad Branch, Au. 15,86, H. W. Henshaw, in hb. 
Hortus Berlin, 1839, in Gray hb., Er in Europe Biotia nd D. C3 
and by Gray ** A. virgen B T. & G., Fl. N. Am.," and again by Gray, later, 
** A. macrophyllus Syn. Fl. 
Hisrory. 1762-6. The earliest specimen of A. Schrebert 
traced, was a plant, assignable to this species according to DeCan- 
dolle (Prodr. 5: 264), cultivated in the ancient botanic garden of 
Leyden as Aster macrophyllus var., and so labelled by the director, 
the elder Van Royen ; doubtless soon after Linnaeus' publication, 
1762, of the name Aster macrophyllus; and presumably before 
1766, when De la Roche, in whose herbarium the plant was pre- 
served, published at Leyden the result of his studies there, in his 
Descriptiones. 
The director, Adrian Van Royen, 1705-1779, had already 
published in 1740 a Flora* of the Leyden Botanic Garden, one 
of a long series of publications emanating from that garden, which 
had begun as early as Paaw, 1591. It had been from.this garden 
that Hermann had described Aster Novi Belgii for the first time 
in his Paradisus, and that Linnaeus as a young man worked with 
Gronovius in editing Clayton's descriptions of Virginian plants 
in 1738. 
The other Leyden authority connected with A. Schreberi, Daniel 
de la Roche, was a young physician originally from Geneva, and 
only 23 years of age when he published his Descriptiones t at 
Leyden. 
—1783. The next to possess specimens of A. Schrebert may 
have been Lamarck, who had before 1783 some plants of this 
subsection, it would appear, referred to $ by Lamarck under A. 
macrophyllus as varying in having a stem ** quelquefois trés lisse,” 
or "sometimes very smooth."  Nees in 1832 assigned these 
smooth-stemmed plants to A. Schreberi, a determination rendered 
probable by Lamarck’s color-description for A. macrophyllus as 
“ white or very pale violet" ; Lamarck's white plants belonging 
probably in part to A. Schrebert or to A. subcymosus. 
* Flore Leydinensis diorum exhibens AES que in horto acad. Lugduno- 
Batavo aluntur. Lugd.-Bat. 1740, 8vo., 518 p., 
+ Descriptiones IRS dique novarum. Ta -Bat. 1766, 4vo., 35 p., 5» 
tab. col. 
3 Encyclopédie Méthodique, 1: 307. 1783. 
