i6o— ROSA ORBICULARIS Baker 
Rosa orbicularis : caule gracili, ramosissimo ; aculeis subulatis, erecto- 
patentibus, saepegeminis ; foliolis 5-7, orbicularibus, obtusis, parvis, membranaceis, 
simpliciter serratis, utrinque glabris ; rhachi et petiolis glabris, nudis vel parce 
aciculatis; stipulis breviter adnatis, apicibus liberis obtusis vel acutis; floribus 1-3 ; 
pedicellis nudis, elongatis ; calycis tubo oblongo, nudo ; lobis parvis, simplicibus, 
lanceolatis, dorso nudis vel parce hispidis ; petalis parvis, obovatis, albis ; stylis 
liberis, inclusis ; fructu ignoto. 
R. orbicularis Baker inedit. 
Stems slender, much branched ; prickles mostly in pairs, slender, subulate, 
erecto-patent. Leaflets 5-7, orbicular, obtuse, membranous, simply serrated, 
glabrous on both surfaces, \ in. long; rhachis and petioles glabrous, naked or 
slightly aciculate ; stipules shortly adnate, with obtuse or acute free tips. Flowers 
1-3 ; pedicels long, naked. Calyx-tube oblong, naked ; lobes lanceolate, simple, 
i in. long, naked on the back or slightly hispid. Petals white, obovate, f in. long. 
Styles free, included. Fruit not seen. 
South-west China. Collected by M. T Abbe Theodore Moubeig. 
Cultivated at Kew ; received 1908. Near Rosa Webbiana Wall, 
and Rosa morrisonensis Hayata. 
161— ROSA SERTATA Rolfe 
Rosa sertata : caule ramoso, rubro-brunneo ; aculeis rectis, aequalibus, 
patulis, interdum geminis ; foliolis 9-15, lineari-oblongis, obtusis, simpliciter 
serratis, membranaceis, utrinque glabris ; rhachi et petiolis nudis ; stipulis adnatis, 
angustis, apicibus liberis, linearibus; floribus solitariis; pedunculis brevibus, nudis ; 
calycis tubo globoso, nudo ; lobis simplicibus, lanceolatis, acuminatis, dorso nudis ; 
petalis parvis, albis ; stylis liberis, inclusis ; fructu immaturo globoso, nudo. 
R. sertata Rolfe in Bot. Mag. vol. ix. t. 8473 (1913). — Osborne in Gard. Chron. 
vol. liv. p. 166, t. 63, 1913. 
Stems bright red-brown, branching ; prickles straight, equal, spreading, some- 
times in pairs. Leaflets 9-15, linear-oblong, obtuse, membranous, J-f in. long, 
J-J in. broad, simply serrated, glabrous on both surfaces ; rhachis and petioles 
naked ; stipules adnate, narrow, with small linear free tips. Flowers solitary ; 
peduncles short, naked. Calyx-tube globose, naked ; lobes lanceolate, acuminate, 
simple, naked on the back, about an inch long. Petals small, white. Styles free, 
included. Immature fruit globose, naked. 
South-west China, E. H. Wilsons third expedition. Described 
from Warley garden, where it has flowered freely during the past three 
seasons. A very distinct species of the Cinnamomeae group. 
Western Hupeh, Tang Hsien, moorlands, Arnold Arboretum 
Expedition, 1907-1909. Altitude, 2,300-2,800 metres. 
493 VOL. II. — I I 
