346 DR. E. DE FRAINE ON THE 
May 17th, 1913.—Since the above paper was written a publication * has 
appeared on the plant-habits and structure of Salicornia australis ; as the 
interpretation of certain anatomical features differs from that given in the 
present investigation, it seemed desirable to add the following notes. 
The author states very briefly various considerations which have led to 
the conclusion that “it is the greatly developed leaf-base which forms the 
‘cortex’ referred to by writers on Salicornia.’ Details are given as to 
the stomata, the aqueous tissue, the palisade layer, the apical growth, and 
the seedling of the species. 
The occurrence of spiral cells in the palisade tissue of the leaf and leaf- 
base is recorded, but their function is ascribed to air storage (ef. p. 333). 
A full account is given of the mode of secondary growth of the stem and 
root. А pericyclic extrafascieular cambium ring forms centripetally, xylem 
‘consisting of “thick-walled fibrous cells, among which are situated, in 
irregular rings, the vessels, with very large lumens.” Scattered among the 
fibrous cells of the xylem and lying just outside the large vessels are phloem 
islands, The extrafascicular cambium forms phloem centrifugally, this bast 
consisted of parenchyma like cells with chlorophyll and starch grains, but no 
sieve tubes were present; some of the cells of the phloem disintegrate, 
“those remaining being arranged in radial rows, between which are large 
intercellular spaces.” 
The secondary thickening of the stem and root of the species of Salicornia 
examined during the present investigation differs essentially from the above 
account; the extrafascicular cambium is regarded as giving rise centripetally 
to collateral bundles of wood and bast embedded in fibrous “ intermediate 
tissue,” centrifugally a zone of aerating cortex variable in extent is produced 
(cf. p. 337 seq.). 
The paper concludes with a description of the flowers and fruit. The 
point of greatest interest in this connection lies in the fact that five to ten 
flowers oceur in each leaf axil, while occasionally as many as sixteen may be 
found, a double row round the stem then being produced. 
BIBLIOGRAPHY, 
BABINGTON, C, C.: Manual of British Botany, 9th ed., by Н. & J. Groves, p. 350, 
Barton, H.: Bull. mens, de la Soc. Linn. d. Paris, 1886, p. 620, 
BENTHAM, G.: Handbook of the British Flora, p. 436 (1858). 
Cooke, F. W.: “Observations on Salicornia australis,’ Trans, & Proc. New Zealand 
Institute, vol. xliv. (1911). 
DaxcEaRD, P. A.: Bull. Soc. Linn. Normandie, scr. 4, ii, (1887) pp. 93-180. 
Dr Bary, Н. A.: Comparative Anatomy of the Phanerogams and Ferns. Engl. Transl. 
Oxford, 1884, p. 297. 
* Cooke, F. W., /oc. cit. p. 349. 
