828 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



been brought about in grounds and on bare buildings by the judicious 

 planting of shrubs and trees. — A. D. W. 



Leaf-cutting's, On. By P. Baccarini (Bull. B. Soc. Tosc. Ort. 11, 

 p. 329, October 1901). — This method is largely practised for the propaga- 

 tion of Gesneriacece, Begonia, and Aroidece. Some plants strike more 

 readily than others from leaf -cuttings : a species of Aloe only produced 

 buds a year after the leaf was planted. The same with Sansevieria 

 guineensis Willd. and S. Ehrenbergii Schwf., some leaves of which took 

 several months to root after being planted in May 1903, and only last 

 June did the young plants appear above ground. Others did not get 

 beyond the rooting stage ; others had only formed callus. But the slow 

 sprouting of the leaves has its compensations if, as in the cases of Begowa 

 and Torenia asiatica, the plants so produced flower earlier than under 

 normal conditions, although the vegetative vigour of such plants may 

 be less. 



Lindemuth caused sixty-five species, belonging to thirty-three natural 

 orders, to root, and from these he obtained individuals only from the 

 following fifteen species: Achyranthes Verschaffeltii, Antirrhinum magus, 

 Brassica oleracea, Capsicum annuum, Coleus hybridus, Fuchsia hybrida, 

 Iresine Lindcni, Ledenbergia roseo-cenea, Mimulus hybridus var. duplex, 

 M. moschatus, Oxalis Deppei lilacina, Petunia hybrida, Pogostemon 

 Patchouly, Baphanus sativus, Torenia asiatica. The power of rooting 

 varies according to the season and the condition of the plant ; e.g. leaves 

 of Vitis vinifera, planted on August 11, rooted very easily, but were no 

 longer able to do so on September 11. 



The present author experimented with over a hundred species and 

 varieties from June to August, and obtained rooted leaves from the 

 following : — 



Achyranthes Verschaffeltii Fuchsia hybrida 



JEgiphila martinicensis Ginkgo biloba 



Artanthe magnifica Hibiscus Bosa-sinensis 



Aster Novi-Belgii Ixora coccinea 



Balsamina hortensis Ledenbergia roseo-cenea 



Brassica oleracea Pachystachys carnea 



„ Bapa Pelargonium diadematum 



Oestrum Par qui Pogostemon Patchouly 



Codiaum Weissmanni Primula sinensis 



Coleus Verschaffeltii Buellia macrantha 



Eupatorium petiolare Vitis rupestris 



Fic u s nymphace folia 



Callus-formation was observed in : Angiopteris evecta var. Teys- 

 manniana, Citrus Limonum, Dichorisandra mosaica, Stephanotis flori- 

 bunda, Vitis riparia, V. vinifera. 



The author was unable to root certain leaves with which Lindemuth 

 was successful, and vice versa. 



The author found that the rooted leaves are more robust than those 

 attached to branches ; in the case of Coleus, e.g., they tend to form rcots 

 along the midrib, even above the soil. In the case of Eupatorium 



