82 — ROSA SPINOSISSIMA L. 
THE BURNET ROSE 
Rosa spinosissima : caule erecto vel arcuato ; aculeis sparsis, rectis, gracilibus, 
aciculis copiosis intermixtis ; foliolis 7-9, parvis, oblongis, obtusis, simpliciter 
serratis, utrinque glabris ; rhachi glabra ; stipulis longe adnatis, apice libero ovato ; 
floribus semper solitariis ; pedunculis aciculatis vel nudis ; calycis tubo globoso ; 
lobis lanceolatis, simplicibus, dorso glabris ; petalis albis ; stylis liberis, tomentosis, 
inclusis ; fructu globoso, nudo, brunneo, sepalis persistentibus coronato. 
R. spinosissima Linnaeus, Sp. Plant . vol. i. p. 491 (1753). — Lange, FI. Dan. 
vol. iii. t. 398 (1770). — Jacquin, Fragm. p. 79 t. 124 (1809). — Guimpel, Willdenow 
& Hayne, Abbild. Deutsch. Holzart , vol. i. p. 115, t. 86 (1815). — Lindley, Ros. 
Monogr. p. 50, No. 31 (1820). — Syme, Eng. Bot. ed. 3, vol. iii. p. 203, t. 461 (1864). — 
Grenier,/ 7 /, fiirass , p. 226(1865). — Burnat&Gremli ,RosesAlp.Marit. p. 61 (1879). — 
Koehne, Deutsche Dendrol. p. 299(1893). — Rehder in Bailey, Cycl. Am. Hort. vol. iv. 
p. 1556 (1902). — C. K. Schneider, III. Handbuch Laubhotzk. vol. i. p. 583 (1906). 
R. pimpinellifolia Linnaeus, Syst. Nat . ed. 10, vol. ii. p. 1062 (1759) ; Sp. Plant. 
ed. 2, vol. ii. p. 703 (1764). — Aiton, Hort. Kew. vol. ii. p. 202 (1789). — Roessig, Die 
Rosen , No. 59 (1802-1820). — -Nouv. Duhamel, vol. vii. p. 19, t. 16, fig. 2 (1819). — 
Dumortier in Bull. Soc. Bot. Belg. vol. vi. p. 39 (1867). — Christ, Rosen Schweiz , 
p. 62 (1873). — Borbas in M. T. A had. Math. S. Termdszettud Kozlemenyek xvi. 
Kotet. p. 537 (Ros. Hung. p. 537) (1880). — Waldner, Europ. Rosentyp. p. 28 (1885). — 
Crdpin in Bull. Soc. Bot. Belg. vol. xxxi. pt. 2, p. 73 (1892). — Burnat, FI. Alp. Mar. 
vol. iii. p. 35 (1899). — Keller in Ascherson & Graebner, Syn. Mitteleur. FI. vol. vi. 
p. 309 (1902). 
R. viminea Lindley, Ros. Monogr. p. 49, No. 30 (1820). 
R. spinosissima , subsp. pimpinellifolia Hooker, Student's Flora , p. 120(1870). 
Stem short and erect on the coast sandhills, longer and arcuate inland ; prickles 
scattered, straight, slender, intermixed with copious unequal aciculi. Leaflets 7-9, 
small, oblong, obtuse, simply serrated, glabrous on both surfaces ; petioles glabrous ; 
stipules adnate, with small, ovate, free tips, not margined with glands. Flowers 
always solitary ; peduncles aciculate or naked. Calyx-tube globose, naked ; lobes 
lanceolate, entire, glabrous on the back. Petals pure white, middle-sized. Styles 
free, tomentose, included. Fruit globose, dark brown, naked, crowned with the 
persistent sepals. 
Rosa spinosissima is a very distinct species, its spiny aspect being 
well described by its name. The synonymy and description here given 
only apply to the type, for by reason of its widely extended range over 
Europe and temperate Asia, its specific characters have been much 
modified by the varying conditions, as well as by cultivation, It has 
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