Book  (2019)  Page(s) 132-133.  
 
p. 132: Eerder zelden wordt nog de overkoepelende benaming Rosa villosa gebruikt, waarbij dan sherardii als ondersoort of microspecies van deze wordt beschouwd.
p. 133: De Berijpte Viltroos heeft de meeste kenmerken van de Gewone Viltroos gemeen, wat betreft beharing (viltig), bekliering (harsgeur) en stekels (zwak gebogen tot recht).

Translation:
p. 132: Rather rarely, the umbrella term Rosa villosa is still used, with sherardii then considered a subspecies or microspecies of this one.
p. 133: The "Frosted Feltrose" (R. sherardii) shares most of the characteristics of the "Common Feltrose" (R. tomentosa/villosa), in terms of hairiness (felty), glands (resinous scent) and spines (weakly curved to straight).

Article (website)  (2012)  Includes photo(s).
 
Rosa sherardii....forms an arching-erect, tall (ca. 1.5-2 m), loosely patch-forming shrubs with large, bluish-green, moderately but not densely pubescent leaves and single, medium-pink flowers that are ca. 5 cm in diameter....The best characters for recognition are the presence of reddish-brown, sessile glands with a resinous scent on the abaxial leaf surfaces and large, bright scarlet, plumply ellipsoid to globose hips that are glabrous to only sparsely stipitate-glandular....
...A small section of northeastern Vermont...was settled directly from Scotland in 1774-1775....as many as 40 settlers from Renfrewshire in the Caledonia County town of Ryegate by October 1774 and the neighbouring town of Barnet had settlers from Perth and Sterling soon after...These areas in Scotland are well within the range of Rosa sherardii...and I conjecture that the plants, cuttings, or seeds were brought by these early settlers, or perhaps later by their families, directly from Scotland to Vermont...

Book  (2001)  Page(s) 30.  
 
R. sherardii Davies, Welsh Botanol. I:49 (1813) (R. omissa Déséglise). Like 32 [R. tomentosa] but more compact; stems pruinose; internodes long; leaflets biserrate, with glandular teeth...sepals erect and persistent....petal pink...2n=28. N., W., & C. Europe, eastwards to S.W. Finland and extending southwards to Bulgaria.

Book  (2001)  Page(s) 534.  
 
Species group Rosa tomentosa Sm.
1-1.5 m high shrubs with straight or slightly curved, but never sickle-shaped prickles, to 1 cm, strongly expanded only at their base. 5-7 leaflets, oval glandular doubly serrated, both sides downy pubescent, grey-green beneath, with or without glands. Blooms light to dark red, diameter 3-4.5 cm. 2 petals foliaceous, 2 entire, one foliaceous one one side, upright or reflexed after blooming, mostly persistent, with many glands and glandular bristles. Fruit bright red, generally with glands and glandular bristles.

Rosa sherardii Davies. Sherards Rose, Rosier de Sherard, Rosa di Sherard. Branches zig-zag-shaped. Prickles slightly curved. Foliage generally wholly glandular beneath. Pedicel in maximum as long as the fruit. Sepals shorter than petals, remain erect after blooming, persistent. June. Blackthorn hedges, rocks, hilly-mountaneous areas....2n=28, 35, 42. R. omissa Déséglise.

Book  (2000)  Page(s) 237.  Includes photo(s).
 
Rosa sherardii Davies. Samt-Rose. Similar to [Rosa tomentosa]. but to 2 m high, stocky. Petals usually vivid deep pink. Sepals obliquely upright after blooming, fluttery, extended sideways or erect, persistent. Style channel broad (1,1-)1.5-2.0(-2.5) mm, stigma hat-shaped, wooly. Pedicel generally somewhat longer than the fruit.

Website/Catalog  (1990)  
 
R. sherardii Dav. 2n=35

Book  (1972)  Includes photo(s).
 
Rosa sherardii Davies. Northern Downy Rose. R. omissa Desegl. Leaves rather glaucous; pedicels 1/2-11/2 cm.; sepals short, slightly constricted, persistent; flo. often deep pink; styles villous; disk 3-31/2 times orifice. Frequent in N. Britain, rare in S. Flo June-July.

plate 30

Book  (1937)  Page(s) 78.  
 
Sherardii Dav. (villosa-family) [ploidy] 28 ([thereof univalents:] 14)

Book  (1937)  Page(s) 75.  
 
omissa Déségl. (sspec. of tomentosa (Sm.) [ploidy] 35 ([thereof univalents:] 21)

Book  (1910)  Page(s) 339.  
 
[Under the heading Interesting Species and Hybrids not Classified.] Omissa; allied to R. canina, flowers pinkish white, showy and good.