Book  (1860)  Page(s) 163.  
 
Rosa sempervirens...Spectabilis, medium size, pale pink, flat cup form; excellent Rose.

Book  (1858)  Page(s) 309.  
 
Rosa sempervirens. Spectabilis,medium size, full, pale pink, flat cup form.

Magazine  (Aug 1854)  Page(s) 229.  
 
"On Town Roses" by G. Paul.
I shall now offer a list of 100 sorts, which I believe best suited for town gardening, having seen them at various times flourishing around London and the great manufacturing towns in the United Kingdom.
Summer Roses.
The Evergreen Rose.
Spectabilis...rosy lilac

Magazine  (May 1849)  Page(s) 77.  
 
Evergreen Roses....Spectabile - Rosy lilac, large, double and compact shape.

Book  (1849)  Page(s) 33, supplement.  
 
Descriptive List of Roses.
List of roses that bloom only once in the season.
Climbing Roses. Sempervirens, or Evergreen Roses.
1905 Spectabile, Rose Ayez...Deep lilac rose, curiously cut petals, very vigorous.

Book  (1848)  Page(s) Div. II, p. 99.  
 
Semperviens.
SPECTABILE (Noisette Ayez); flowers rosy pink, of medium size, double; produced occasionally in the autumn; form, cupped, pretty and distinct.

Book  (1837)  Page(s) Sect. III, p. 47.  
 
Sempervirens. Spectabilis, beautiful, almost without fragrance. Deep pink, passing to blueish, 2 in., double.

Book  (1837)  Page(s) 880.  
 
Rosa sempervirens. Rosiers toujours verts.
10. — spectabilis. fleur rouge vineux.

Book  (1837)  Page(s) 48.  
 
Sempervirens. Spectabile, or Rose Ayez of some catalogues, is a fine and distinct climbing rose, with bright rosy lilac flowers, and curiously incised petals; a most vigorous growing and desirable variety.

Book  (1837)  Page(s) cat., p. 10.  
 
Sempervirens. Spectabile, lilac rose, cupped and double.