or Royal Salop . 151 
67 07 ; but In Mr. Baker’s description there is no notice taken 
of its being a plant said to yield a kind of Salep. 
Upon handling the living bulb of Allium Made anil, Plate 
X (Fig. 4), at this stage of its growth, I found, with the ex- 
ception of where there still remained adherent some slight 
shreds of a cast-off membranaceous scale (Fig. 4, /, /), that 
the surface had a glistening semi-transparent appearance, and 
that the bulb felt hard, dense, and solid. On one side of the 
external surface there is a groove more or less apparent, 
broadest at the greatest circumference of the bulb, narrow- 
ing towards the base, where it occupies about one-fifth 
of the circumference, gradually becoming lost towards the 
apex, by narrowing off to a sharp point ; dividing this groove 
into two is a raised convexity passing from the base upwards, 
and most marked at the centre of the bulb. This convexity 
may be again divided by a slight groove. 
A vertical section (Fig. 5) of the bulb, at this stage of its 
growth, shows a uniform mass (c } c) of tissue, having a potato- 
like consistency, in the centre of which a cavity exists ( d , d), 
and at the base and in the centre of this cavity is the growing 
axis of the scape with leaves (e, e) springing from the flattened 
stem. On a transverse section (Fig. 9), the bulb is seen to 
consist of an external epidermal layer (k. It), continuous in 
tissue with the comparatively dense tissue ( c , c ) and a central 
hollow or cavity (d, d) containing the growing axis (e, e). The 
markings on the external surface of the bulb are not traceable 
into its interior structure, and except the shreds of a single 
membranous scale (Figs. 4, 5 ,/,/), no signs whatsoever are 
to be perceived of any other tunics. 
By careful comparison of the bulbs of the following species 
of Allium , for permission to examine which I am indebted 
to the courtesy of Mr. Thiselton Dyer, C.M.G., the Director 
of the Royal Gardens, Kew, viz. of A. gigantezim. Regel; A. 
stipitatum , Regel; A. Suworowi , Regel, and an Afghan un- 
determined species of my own, I have been able to ascertain 
that the characters above described in A. Macleanii, exist in 
these Central Asian and Afghan species. By examination of 
M 
