66 



39593. ROSA GIGANTEA. From E. D. Sturtevant, HoU>-w'oo(i, 

 Cal. A rampant climber with usually unarmed flowering branches 

 and solitary white to lemon-yellow, single flowers, 5 to 6 inches 

 across. Leaflets usually five, nearly oval, smooth, and firm. For- 

 tune's Double Yellow is said possibly to have arisen from crosses 

 with this rose or to be a variety of it. Quite tender except in the 

 South. Too large for greenhouses. 



29729. ROSA GIGANTEA X (?). BeUe Portuguoise rose. 



Several remarkable hybrids have been made between the giant 

 climbing rose of Burma and other cultivated varieties. This one is 

 from the Lisbon Botanic Garden, without data as to parentage. In 

 California it has proven exceedingly vigorous and produces in profu- 

 sion extremely large, creamy white, double blooms, rose tinted. 

 Doubtless tender. Easily broken by winds. 



40193. ROSA SERTATA. Rose. Presented by the dhector, 

 Royal Botanic Gardens, Kew, England. Shrub of trim habit, 5 feet 

 or more high, with graceful, slender branches bearing smaU, gray- 

 green leaves composed of 7 to 11 sharply-toothed leaflets; delicate 

 purplish-red flowers and deep red, egg-shaped hips. Very dainty 

 rose aUied to R. wehhiana and R. willmoUiae. Native of Central China. 

 Introduced at Kew by E. H. Wilson in 1907. 



40699. ROSA SWEGINZOWII. Rose. CoUected by F. N. 

 Meyer near Sanszemiau, Kansu, China. A wild rose resembling Rosa 

 Tiugonis in habit; of very vigorous growth and possessing remarkably 

 broad spmes, which vary much in size and number on various speci- 

 mens. Bush 5 to 10 or more feet high. Flowers deep rose color. 

 Found on rocky mountain slopes at 5,000 to 8,000 feet altitude. 

 Possibly of value in hybridization experiments. 



40595. RL^US IRENAEUS. Shrubby Chinese Rubus. Pre- 

 sented by Vicary Gibbs, Elstree, Herts, England. One of the most 

 striking and remarkable of the simple-leaved forms. The ever- 

 green foliage suggests coltsfoot in size and shape, but has a cm'ious 

 metallic luster on the upper surface. Stems prostrate, covered with 

 dense, gi'ay down; flowers white. Suitable as covering for semi- 

 shaded slopes. Fruit large, red. 



39187. RL3US ROSAEFOLIUS. From G. Regnard, Port Louis, 

 Mauritius. Yellow-fruited variety. This is very scarce, probably 

 because it is planted with or near the red £orm with which it becomes 

 cross-fertilized and the red predominates. Should be planted in 

 sheltered or shady position in deep, rich soil. Requires considerable 

 watering. 



