102 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
(9) P. x Doncasterianum II., a hybrid between P. hirsutissimum 
(Pfitz) and P. callosum (Pfitz), raised by Messrs. Charlesworth. In ferm, 
the parent P. callosum is prepotent in habit of flowers, scape, bract, 
ovary, lower sepal, and staminode, while P. hirsutissimum predominates 
in the leaves and lip; in all, favouring P. callosum as 24:20. In colour, 
P. callosum preponderates in scape, ovary, lower sepal, lip and staminode, 
while P. hirsutissimum prevails in leaves, bract, and petals ; altogether 
fairly intermediate, as 15:15. The whole plant, in form and colour, 
favouring P. callosum as 39: 35, or 52°7 per cent. 
(10) P. x Quies II., a hybrid between P. Curtisii and P. Hookere 
volonteanum, raised by Messrs. Charlesworth. In form, the parent 
P. Hooker is prepotent in habit of flowering, scape, and lip, while 
P. Curtisii predominates in habit of growth, bract, ovary, and petals; in 
all, fairly intermediate, as 19:19. In colowr, P. Hooker preponderates 
Via. 24. Fie. 25. 
Ep1-La:uiA x RADICO-PURPURATA. EPIDENDRUM RADICANS. 
(Orchid Review.) 
Generic Hybrid with its prepotent Pollen Parent. 
in the ovary and upper sepal, while P. Curtisii prevails in the bract ; 
altogether favouring P. Hookere as 17:16. The whole plant, in form 
and colour, favouring P. Hookere, as 36:35, or 50°7 per cent. 
From the above analyses it will be seen that in primary hybrids 
between two species the amount of the inheritance of the specific charac- 
ters of each parent is found to be about one-half. 
THe INHERITANCE OF GENERIC CHARACTERS. 
Generic hybrids, or bigeners, 7.e. hybrids between species belonging to 
two distinct genera, have now become rather numerous, especially in the 
Orchidex, in that order numbering about 150 distinct crosses. As a 
rule it is found that generic characters, like specific characters, are 
inherited in primary hybrids to the amount of one-half or thereabouts. 
