TU CE PES T ESI 
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ON THE BOTANY OF THE LIZARD PENINSULA. 35 
in transverse section, the pith, wood-cells, and cambium layer are 
distinctly visible. Outside the cambium, rid of soft bast and thickened 
ast-cells are observed, then the cork-cambium and numerous cork-cells, 
forming a thick external layer. 'The epidemics: with its appendages is 
formation of the cork-cells the epidermis, with all its appendages, is 
thrown off in the same way as in Acer campestre. 
The Thickened Celis in the Leaves of Pines. 
Under the peu of the leaves of Pines ene ir gines a 
cells are to be with, which resemble bast-fibre n their g ral cha- 
racters. Ona pra examination of a transverse ter of the leaf the 
fibro- vascular bundles can be observed, but no bast-cells are visible; the 
bundles being surrounded by soft cellular tissue; while underneath the 
epidermis, and, therefore, widely separated from the fibro-vascular bundles, 
these peculiar thickened cells are to be seen. As the t true bast-cells 
always form a portion of the tissues of the fibro-vascular bundles, it is 
evident that from their position these thickened cells are not to be con- 
sidered as bast, but rather as subepidermal cells. Dr. Hooker describes 
and figures numerous bast-cells in the scales of the cones of Welwitschia. 
In that plant, however, the fibro-vascular bundles in the scales are only 
very slightly developed, and do not form any of the true bast-cells, while 
the thickened cells occurring so abundantly under the epidermis seem to 
be only thickened subepiderma l cells. These thickened pees ac ione ies 
oceur in Lycopods, and I have no doubt that what Professor Willia 
and others call liber in Lepidodendron, must be vicerunt as sala a 
series of greatly developed thickened subepidermal cells, 
ON THE BOTANY OF THE LIZARD PENINSULA. 
By J. G. Baker, FLS. 
s (Concluded from p. 16.) 
Helosciadium inundatum. Pools on Pradannack and Goonhilly Downs, 
Bunium flexuosum. Not noted, but doubtless over — d. 
Pimpinella Saxifraga. Frequent. P. magna ne 
Ginanthe Lachenalii. Once seen in a rivulet near 7 Mullion. 
Œ. crocata. Frequent ier = low part of the streams. 
Ahthusa Cynapium. Fre 
Feeniculum vulgare. "summ near the sea at Cadgwith and Helford, 
doubtfully native. 
ithmum maritimum. Everywhere abundant on the rocky seabanks. 
HB 
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