Book  (2019)  Page(s) 32-35.  
 
Rosa sambucina Koidz., Bot. Mag. Tokyo 31:130 (1917), description

Article (newsletter)  (Jul 2012)  Page(s) 45-46.  
 
R. sambucina (Fig.1. l. fragrance intensely sweet and also fruity) ....
....phenylacetaldehyde (49.6 % ), 2-phenylethanol (28.2%) and eugenol (5.4%) in R. sambucina ....
We classed R. sambucina and R. bracteata under the Unique group since their fragrances were found to contain some components rarely found in other roses, though they may be found in the flowers of other plants. The main component of the fragrance of R. sambucina was phenylacetaldehyde (49.6%), while that of R. bracteata was benzyl acetate (54.9%). Phenylacetaldehyde, the main component of the R. sambucina’s fragrance, was a precursor of 2- phenylethanol (Fig.3)¹¹⁾, and was rarely found among the components of rose fragrances. It was not detected in the fragrances of the other roses we analysed (Table 2). It is presumed that the work of the reductase is not so active in R. sambucina as in other roses in the reactivity changing of phenylacetaldehyde into 2-phenylethanol.

Website/Catalog  (2006)  
 
Yama-Ibara (Mountain Briar) R. sambucina Koidz.
Bot. Mag. Tokyo 31:130 (1917)
Distribution: West Honshu (Aichi Prefecture and further west, the Kinki district, the Chugoku district), Shikoku and Kyushu
The flowers of this rose resemble those of R. multiflora in shape: however, this rose grows more vigorously and puts forth longer stems which sometimes climb on other trees. Its flowers are larger than those of R. multiflora, ca. 3.5 cm across, and also leaves with 3 to 5 leaflets are much larger than those of R. multiflora. The shape of its inflorescence also differs: unlike other roses in this section, whose flowers are arranged in panicles, this rose bears its flowers in big corymbs.

Book  (2006)  Page(s) 111, 110 (photo).  Includes photo(s).
 
Yama-Ibara (Mountain Briar) R. sambucina Koidz.
Same text as on website.
...The scenery with this rose in full bloom sometimes reminds us of a magnificent white cascade rushing over evergreen forest.

Article (magazine)  (2001)  Page(s) 393.  
 
R. sambucina Koidz. Ploidy 2x
Pollen fertility 86.1%
Selfed Fruit set 0%

Book  (1965)  Page(s) 540.  
 
2. Rosa sambucina Koidz. R. moschata sensu auct. Japon., non Mill. - Yama-ibara. Shrub; branches glabrous with recurved flat prickles; stipules membranous, entire, slightly glandular on margin, the free portion linear; leaflets 5, subcoriaceous, broadly lanceolate to narrowly ovate-oblong, (3-) 5-10 cm. long, 1-2.5 cm. wide, long-acuminate, glabrous, pale beneath; flowers 5-20, in corymbs or flat-topped panicles, white, 4-5 cm. across, the pedicels 3-5 cm. long, loosely short-glandular-pilose; calyx-tube loosely glandular-pilose, the styles hairy. -  May-June. Honshu (s. part of centr. distr. and western Kinki Distr.), Shikoku, Kyushu; rare.