106 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



buried ; the rock formation was an argillaceous schist with mica 

 and quartz, the strata being vertical, or almost so, and showing 

 signs of a decided displacement or upheaval. The small streams 

 referred to above run from the west, and also from the east, 

 into a larger stream flowing from north to south. A few miles 

 above the junctions, triandrus albus, the white triandrus, is 

 common, and cyclamineus and Bulbocodium are also found, 

 though more rarely ; but, from the position of the concolor and 

 pulchellus plants, it is not likely that they can have been washed 

 down the larger stream. I am completely puzzled as to the pro- 

 bable origin of these varieties. A cross of cyclamineus x 

 triandrus albus might have been the origin ; but, if so, why do we 

 not find them growing where the parents are in proximity to each 

 other, as the natural hybrids of Pseudo-Narcissus x triandrus, and 

 triandrus x nivalis have invariably been found where the parent 

 species meet and intermingle. 



The soil may have some influence on the colour ; but, if so, it 

 is curious to find some flowers of a concolorous yellow, and others 

 with a pale cup and darker perianth, as pulchellus. I have 

 received a triandrus concolor from Professor Henriques of a 

 much richer colour ; these were collected near the Estrella 

 mountains in Central Portugal. I have sent specimens of the 

 above three varieties to Mr. Barr, who, I hope, will enlighten us 

 on the subject. 



Pseudo-Narcissus, var. bicolor. — In 1885 I collected a quan- 

 tify of plants of a Pseudo-Narcissus, having a white perianth 

 suffused at the base with sulphur. This has been introduced 

 into English gardens under the name of Ajax bicolor lusitanicus. 

 Since then another and very distinct variety of bicolor has been 

 sent to me ; in this form the perianth segments, instead of being 

 broad and imbricated, are narrow, pointed, and quite separate at 

 the base, standing at right angles to the cup, and presenting a 

 curious star-like appearance. Of this variety I obtained only 

 six plants, but hope to be able to collect more, so as to introduce 

 them into cultivation in England. 



N. scabcrulus. — This quaint little species, discovered and 

 described last year* by Professor Henriques, has flowered well 

 under cultivation ; it resembles N. juncifolius very closely, differ- 

 ing chiefly in the habit and leaf. 



* BoL Soc. Brot. VI., p. 45, with figure. 



