IOI — ROSA REVERSA Waldst. & Kit. 
(ROSA PENDULINA x SPINOSISSIMA) 
Rosa reversa : caule brevi, erecto ; aculeis den sis, gracilibus, rectis ; foliolis 
7-1 1, parvis, oblongis, obtusis, simpliciter serratis, glabris ; rhachi glandulosa ; 
stipulis adnatis, apicibus liberis, parvis, ovato-lanceolatis ; floribus solitariis ; 
pedunculis brevibus, aciculatis ; calycis tubo oblongo, nudo ; lobis lanceolalis, 
integris, dorso parce glandulosis ; petalis albis ; stylis liberis, dense villosis, haud 
protrusis ; fructu ampullaeformi, rubro, sepalis persistentibus coronato. 
R. reversa Waldstein & Kitaibel, PL Par. Hong. vol. iii. p. 293, t. 264 (1812). — 
Crepin in Bull. Soc. Bot. Belg. vol. viii. p. 328 ( Primit . Monogr. Ros. fasc. i. p. 107) 
(1869); vol. xxxiii. pt. 1, p. 35 (1894). — Borbas in M. T. Akad. Math. S. Ter- 
nieszettud Kozlenienyek xvi. Kotet. pp. 539, 544 (Ros. Hung. pp. 539, 544) (1880). 
R. rubella Smith in Eng. Bot. vol. xxxvi. t. 2521 (1814); Eng. FI. vol. ii. p. 374 
(1824). — Woods in Trans. Linn. Soc. vol. xii. p. 177 (1818). — Lindley, Ros. Monogr. 
p. 40, No. 25 (1820). — Godet, FI. Jur. p. 205 (1853). — Syme in Eng. Bot. ed. 3, 
vol. iii. p. 204, t. 462 (1864). — Grenier, FI. Jur. vol. i. p. 227 (1865). — Crepin in 
Bull. Soc. Bot. Belg. vol. viii. p. 328 (Primit. Monogr. Ros. fasc. i. p. 107) (1869). 
R. Candolleana Thory in Redoute, Roses , vol. ii. p. 45, t. (1821). 
R. Ozanonii Deseglise in Mdm. Soc. Acad. Angers , vol. x. p. 88 (Ess. 
Mon. Ros. p. 48) (1861). 
R. pinipinellifolia x alpina Reuter, Cat. PI. Vase. Geneve , ed. 2, p. 64 (1861). — 
Christ, Rosen Schweiz , p. 65 (1873). — Crepin in Bull. Soc. Bot. Belg. vol. xxxiii. 
PP- 33 > 143 O894). 
R. medio xinia Christ, Rosen Schweiz , p. 66 (1873). 
R. alpino-pimpinellifolia Christ, Rosen Schweiz, p. 67 (1873). 
R. gen tills Deseglise in Bull. Soc. Bot. Belg. vol. xv. p. 264 (non Sternberg 
teste Keller) (Cat. Rais. Ros. p. 95 [1877]) (1876). 
R. alpina x pinipinellifolia Schmidely in Bull. Trav. Soc. Bot. Geneve , vol. viii. 
p. 50 (1895-7). — Gail laird in Bull. Herb. Boiss. vol. vi. p. 417 (1898). 
R. pendulum x pinipinellifolia Keller in Ascherson & Graebner, Syn. Mitteleur. 
FI. vol. vi. p. 314 (1902). 
A low, erect, compact bush ; prickles dense, slender, straight, passing gradually 
into aciculi and setae. Leaflets 7 -11, small, oblong, obtuse, simply serrated, 
glabrous ; petioles glandular ; stipules adnate, with small, ovate-lanceolate, free tips. 
Flowers solitary ; peduncle short, aciculate. Calyx-tube oblong, naked ; lobes 
lanceolate, entire, thinly glandular on the back. Petals white. Styles free, densely 
villous, not protruded. Fruit ampullaeform, pendulous, red, crowned by the 
persistent sepals. 
Rosa reversa is found in Hungary, and is probably one of the 
many spinosissima-pendidina crosses. These two species appear to 
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