188 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



subgenera, Eucanna, Eurystylus, and Achiridia, have all 

 been cultivated largely, but now in England, France, and Ger- 

 many, as is the case in Hippeastrurn and Gladiolus, the artifi- 

 cially produced hybrids have almost entirely driven the pure 

 species out of cultivation. A few of the taller Eucannas with 

 dark-coloured leaves, forms of latifolia and discolor, still remain. 

 This does not apply to the Tropics, where indica, glauca, and 

 eduUs are still largely cultivated. 



Hybrids. — It is evident that these three subgenera can all 

 be made to fertilise with one another. The hybrids in cultiva- 

 tion may be classed in four groups : — 



1. Hybrids between the different species and varieties of 

 Eucanna. These were very popular twenty or thirty years ago, 

 but are now seldom seen. 



2. Hybrids between Eucanna and Achiridia. I know of 

 one only of which liliiflora is the Achiridia parent. The 

 majority of the Cannas cultivated at the present time are 

 crosses between Ehcmanni and different species and varieties of 

 Eucanna. Ehcmanni is a cross between iridiflora and some 

 Eucanna, probably Warccwiczii. The Ehcmanni Eucanna 

 hybrids have all short tubes, and the yellow ones are doubtless 

 mainly Jiybrids between Ehcmanni and glauca, and the red ones 

 hybrids between Ehcmanni and Warccwiczii. To this group 

 belong all the Oozy Cannas I have seen. 



3. Hybrids between Eucanna and Eurystylus. Of these we 

 have little or no experience in England. These forms closely 

 resemble those of the last group, but ought to be more hardy. 

 Flaccida is a native of the Southern United States, iridiflora of 

 Peru. 



4. Hybrids between Achiridia and Eurystylus. These are 

 very fine plants, as yet but very little known. 



PENTSTEMONS AND PHLOXES. 

 By Mr. James Douglas, F.R.H.S. 

 [Read September 12, 1893.] 



These are both very useful^ plants for the flower garden in 

 autumn, and, as they are very easy to cultivate, should find a 

 place in every garden, large or small. In the following remarks 



