Book  (1938)  Page(s) 84.  
 
R. acicularis, Prickly Rose, Arctic Rose. - (Acicularis means needle-like and refers to the spines which are of this character and numerous). Native; common around Edmonton and widespread in the province, usually on northerly slopes and in denser shade and cooler spots than R. Macounii. Low shrub, usually to about 3 feet at Edmonton, but often 5 feet; when drawn up by shade it occasionally grows 6 feet or so tall. Tallest of the native roses. Stems bristly to tips, or nearly so. Leaflets 5-7, usually 5, dull above, hairy, Flowers solitary, pink; blooms on laterals from 2-year or older wood only; flowering period short, definite. Fruit reddens in 3-4 weeks. Adapted to embankments and slopes and for general landscape purposes. There are at least four botanical varieties. The hips of some strains are very large, long-necked, bottle-shaped, of a deep crimson, almost violet skin-tint (distinct from the scarlet hips of R. Macounii), hang in pendulous sprays (unlike the erectly-held hips of R. Macounii). In var. Bourgeauiana, the fruit is subglobose and very short-necked; in var. Sayi, the fruit is slender and necked.
R. acicularis flore plena. - Double-flowering, native plants have been reported. They are of greater attractiveness than the type and may prove a valuable ornamental acquisition.

Book  (1937)  Page(s) 65.  
 
acicularis Lindl. (circumpolare Cinn.) [pollen quality] 70-100% [ploidy] 56 and 42

Magazine  (Jul 1930)  Page(s) 91.  
 
Rugosa acicularis. Turbat, simple, cramoisi.

Website/Catalog  (1929)  Page(s) 69.  
 
Rose Species
Rosa Acicularis, Lindley. (Northwestern North America.) Dark rose-pink, single flowers, 1½ to 2 inches across, fragrant, borne singly on a low, densely prickly bush. Blooms in May and June, followed by waxy, pear-shaped fruits nearly an inch long. Extremely hardy.

Website/Catalog  (1923)  Page(s) 49.  
 
Rosa acicularis (Lindley, 1820). Single-bloomed, carmine. Approx. 1 m tall, becomes a beautifully compact shrub.

Book  (1919)  Page(s) 104-105.  
 
Rosa acicularis. — The rose frequently occurs in the spruce-fir forest, where it is a relict of earlier stages in the succession. While under the lower light intensity of the forest it is merely a low shrub, outside the forest it frequently forms dense chaparral several feet in height. The plants are connected by an extensive system of rhizomes which lie at a depth of 2 to 10 inches and vary in diameter from 2 to 6 mm. These rhizomes run in all directions, branching freely and at irregular intervals, giving rise to the stems which seldom reach a height in the forest of more than 1.5 to 2.5 feet. The root system originating from these rhizomes consists of both long and short roots. The shorter ones vary in length from 1 to 12 inches. Almost from their point of origin they are profusely branched and rebranched so as to form a brush-like mat. These groups of thickly branched roots penetrate the surface soil in all directions, forming a very efficient absorbing system. The longer roots vary in diameter from 1 to 4 mm. at their point of origin and penetrate the soil downward in a wandering course to a maximum depth of 2 to 5 feet. Throughout their course, these longer roots are fairly well supplied with both short and long branches, the shorter ones varying in length from 0.5 to 3 inches. The longer ones, which are almost threadlike in appearance, may wander off in all directions, even obliquely upward to a distance often of 2 feet or more. These branches are rebranched much after the fashion of the main roots already described. As the main roots and these larger branches approach their extremities, they are divided several times so as to form fairly well-branched termini.

Book  (1910)  Page(s) 338.  
 
[Under the heading Interesting Species and Hybrids not Classified.] Acicularis; a bold growing kind with handsome foliage and large rosy pink single flowers.

Magazine  (Aug 1909)  Page(s) 315-316.  
 
Dans leur Aide-Mémoire du cêcidiologue pour les Plantes d’Europe et du Bassin de la Méditerranée, MM. G. Darboux et C. Houard indiquent les espèces ou variétés suivantes sur lesquelles ont été observées des galles : Rosa acicularis, agrestis, alba, alpina, alpinaxglauca, alpinaxtomentosa, arvensis, canina, caninaxgallica, carelica, caucasica, centifolia, cinnamomea, coriifolia, dumalis, dumetorum, dumetorumxgallica, eglanteria, farinosa, gallica, glauca, graveolens, inodora, micrantha, montana, pimpinellifolia, rubiginosa, rubrifolia, rugosa, sempervirens, sepium, spinosissima, tomentella, tomentosa, villosa et quelques autres.

[species where rose gall has been observed]

Magazine  (Jun 1908)  Page(s) 237.  
 
NOTES SUR LES ROSES DE CHINE (1)
... Groupe VI.— Cinnamomeœ.— Huit espèces sont placées ici, dont cinq sont dans les jardins : Acicularis (Dahurica, quoique regardée comme une espèce par Crépin et autres, est seulement une forme de la Cinnamonea et ainsi nous ne
lui donnons pas un rang spécifique dans cette énumération), Beggeriana, macrophylla, (Prewalskii, décrite par Regel, comme distincte est. seulement, d’après Crépin, une forme de macrophylla), rugosa et sericea sont si distinctes et si bien marquées, et en sus, si bien connues qu’il n’est pas nécessaire de les mentionner. ..... G. Nicholson
(Traduit par M. B. Bellefin, 26, cours Morand, à Lyon. Traductions anglaises, allemandes, italiennes et russes.)
(1) Journal of the royal hort. Society.

Magazine  (1897)  Page(s) 234.  
 
Le Shen-si avait été jusqu'à ces derniers temps peu connu des botanistes. Grâce au séjour qu'y fait le Père Giraldi depuis 1889 nous ne tarderons pas à être amplement édifiés sur la flore de cette province chinoise.
Les recherches de ce zélé botaniste ont amené, comme on l'a vu, la connaissance des principales espèces de Roses du Shen-si avec la découverte de deux types spécifiques nouveaux. Il y a lieu d'espérer que les découvertes rhodologiques n'y sont pas épuisées et que les futurs envois du Père Giraldi nous fourniront encore des nouveautés.
Le Shen-si est partagé en deux régions bien distinctes par leur caractère floral: le Shen-si septentrional et le Shen-si méridional. Si les R. microcarpa Lindl., R. anemonaeflora Fortune, R. indica L., R. bracteata Wendl. et R. laevigata Michx. atteignent le Shen-si, c'est dans la partie méridionale de cette province qu'il faudra rechercher ces espèces. Peut-être vers l'extrémité de la partie septentrionale aura-t-on quelque chance d'y trouver les R. rugosa Thunb. et R. acicularis Lindl. ....Crépin.