Posthumous papers bequeathed to ... the East India Company ... Notulae ad plantas Asiaticas. Pt. II, On the higher cryptogamous plants ... / Arranged by J. M'Clelland.

  • Griffith, William, 1810-1845.
Date:
1849
Catalogue details

Licence: Public Domain Mark

Credit: Posthumous papers bequeathed to ... the East India Company ... Notulae ad plantas Asiaticas. Pt. II, On the higher cryptogamous plants ... / Arranged by J. M'Clelland. Source: Wellcome Collection.

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    8. Enlargement of the secondary parent cells, which appear immersed in grume or amorphous tissue. Primary parent cells obsolete, disappeared ? Sporula in all marked out, in some, quite distinct, and without adhering grume. So far advanced as to present traces of the outer hyaline membrane. Many nucleary discoid oblong bodies, these are the young sporules which have escaped (in the section) from the secondary parent cells. I have not seen a corresponding division of the se- condary parent cell, but as it suffers a slight indentation between each spore, from the analogy of Isoetes it is assumable that it does not become divided prior to dis- appearance. 9. Cells filled with the young spores, which though the secondary parent is not observable even in iodine or ni- tric acid, remain grouped quaternarily, offering all sorts of appearance from ovate to oblong reniform, etc., ac- cording to their direction when seen. They have now their perfect form : contain slight grume, and gene- rally a nucleus. Smaller granules (not those visible before, but amylaceous,) occur with the ordinary green mobile granules. 10. Cells filled with the young spores in innumerable quantities, and although often quaternarily grouped, no evidence of parent secondary cells occurs, the sporules appear to be loosely immersed in grumous matter. They have the mature form, the centre occupied by light grume, either semi-transparent, and ending by a coniform cell, or hyaline cavity. 11. Membranes all formed, central cavity has an incrusted appearance, from producing on its surface young cells. A nucellus visible. 12. Perfect sporules, uniform oblong reniform, convex out- wardly, and triagonal inwardly, of 3 membranes, the out- er hyaline, distinguishable only with very high powers, 3 r