118 PRINCIPLES OF BOTANY, ETC. 
upon a fleshy receptacle, and looks like a 
berry, (§ 117). The Basella incloses its 
seeds in the calyx and corolla, which become 
fleshy, and thus has the appearance of a 
perfect berry. 
More examples of this kind may be learned by 
attentive observation. 
With regard to the Strobilus it remains to be no- 
ticed, that we often falsely so call the scaly imbri- 
cated seeds of the tulip-tree, Liriodendron tulipifera, — 
and the imbricated capsules of the Magnolia, fig. 
159. But the Strobilus proceeds only from a cat- 
kin. | 
The capsules or membranes which inclose the 
seeds of Lichens in shields, scutellze or tubercles, 
are found in these parts in a vertical position; they 
open only at the top, and scatter the seeds in the 
form of a fine powder. They are only to be seen 
when one takes a thin section of these parts and 
uses the assistance of a microscope. : 
§ 114. 
The sEzp, (semen), is that part of the plant which — 
is destined to its propagation. It consists of two 
halves, which change at germination into leaves, and 
are called seed-leaves or cotyledons, (cotyledones). 
Between these, on one side, lies the corcle, (corcu- 
lum), which consists of two bodies, one sharp-point- 
ed, which descends into the earth, and becomes a 
root, rostel, (rostellum) ; the other ascending, and af- 
terwards to form the stem and leaves, called plu- 
mule, 
