20 



FLORA AND SYLVA, 



dens. Such are among the most striking results 

 to date. There are still many seedlings of 1898 

 and 1899 yet unflowered, and all those of the 

 past two or three years. The great feature of my 

 garden in 1901 was T. Schottii, which flowered 

 i n June of that year , and being crossed with pol- 

 len from T. flaccida,glaucescens, recurvifolia, and 

 other species (beside itself yielding pollen for 

 further experiments), gave me four large and 

 very heavy fruits. The seed germinated well, 



YUCCA TITANUS. (Engraved for " Flora.") 



so that I now have about a thousand seed- 

 lings, growing vigorously and already showing 

 great variation. This is not more than might 

 be expected in view of the fact that the seed- 

 bearer reaches the dimensions of a large tree, 

 while T. fiaccida, one of the parents, is a small, 

 stemless, but free-flowering species. This season 

 I havelbeen less fortunate. In June 1902 I 

 brought from Palermo very fine flowers of T. 



brasiliensis (a large tree-species) and Trecule- 

 ana canaliculata,but the cold, wet weather was 

 so unfavourable that experiments failed com- 

 pletely and a year's work is lost. Anotherplant 

 common in Italian gardens is T. De Smetiana, 

 but, to my knowledge, it never flowers. In 

 Sicily, Catania, and Palermo, are very large 

 plants, trees rather than shrubs, of it, but all 

 alike fail to flower. Other fine species, such as 

 the giant T. elephantipes and its variety guate- 

 malensis, flower so late, that up to the present 

 time I have found it impossible to cross them 

 with the dwarf species from the northern states 

 of America. T. constricta, radiosa, the distinct 

 g/auca, and the splendid Whipplei, are rare in 

 Italy, and my own seedlings, received from 

 American friends, are not yet of sufficient force 

 to flower. Certainly the most striking typical 

 plants of my garden are the Samuelas, received 

 from Professor Trelease, to whom my collec- 

 tion owes much. Very good is S. Carnerosana, 

 as is also S. Faxoniana. I dress the Yuccas freely 

 during the hot season with manure and gyp- 

 sum, and during dry weather also give copious 

 waterings. They are very fond of Chilian ni- 

 trates. As full descriptions of these plants will 

 eventually be given by Professor Trelease, I 

 will do no more than give as complete a list or 

 hybrids as is at present possible : — 

 T. filamentosa X gloriosa = Albella. 



,, ,, X recurvifolia — Imperalis. 



,, ,, xfiextlis = Saturnus. 



,, ,, x Treculeana (not flowered). 



,, ,, x rupicola = Treleasei. 



,, ,, x aloifolia = Washington. 



,, ,, bracteata x recurvifolia — Impera- 

 tor. 



,, fiaccida x filamentosa = filamentosa volun- 

 taria. 



,, Xrecurvfolia = Flora. 

 ,, ,, xfiexilis = 

 „ „ X rupicola — Atropas. 

 ,, ,, glaucescens X recurvifolia — Eros. 

 ,, „ grandifiora X recurvifolia = Arnottiana. 

 „ rupicola X filamentosa (not flowered). 



,, X gloriosa — Aletroides. 

 ,, gloriosa X filamentosa = Rex. 

 ,, ,, robustaX fiaccida — Dux. 

 ,, ,, long folia X fiaccida = \uxuvizns. 

 ,, ,, plicata X recurvifolia = Darwini. 

 ,, recurvifolia x flexilis ■ = grandis. 



„ variegataX fiexilts—Princeps. 



