Plate XVIII.
PLATE XVIII.
"Transverse Sternbergia."
(Sternbergia transversa, of Artis.
Artesia ——, of Presl. Additions to Sternberg's Flora der Vorwelt.)
The stems known by the name of Sternbergia, (from Count Sternberg, the author of the Fossil Flora,) appear to be related to the Yucca, or to the Pandanus or Screw-pine.
Mr. Artis observes, that they bear considerable analogy to the stems of the Stapeliæ of our gardens; but still, the external form, which Is the only character visible, does not furnish sufficient ground for their being positively referred to that genus. The stem is marked longitudinally with double keels or ridges, which terminate at different heights spirally round the stem, and have small tubercles at their terminations. There are likewise slight annular depressions, mostly distinct, but in some places two or more unite.