. Fig. 319.—Xosloc gunnerae. Lone;i- tudiual section through the apex of a stem of Giitinera manicala. The punc- tated spots indicate the position of J\'r)s(oc-colonies. (v. Tubeuf del.) the remaining glandular into the same substance. These originate as follows: the species of Guniura possess charac- teristic mucilage-secreting organs, in the form of fissures of the leaf-tip, collaters on the leaves, and glands on the stems. Merker^ found that these glands originated endogenously in the growing point between each pair of leaves. The mature glands are covered only by the epidermis, and when ac
. Fig. 319.—Xosloc gunnerae. Lone;i- tudiual section through the apex of a stem of Giitinera manicala. The punc- tated spots indicate the position of J\'r)s(oc-colonies. (v. Tubeuf del.) the remaining glandular into the same substance. These originate as follows: the species of Guniura possess charac- teristic mucilage-secreting organs, in the form of fissures of the leaf-tip, collaters on the leaves, and glands on the stems. Merker^ found that these glands originated endogenously in the growing point between each pair of leaves. The mature glands are covered only by the epidermis, and when activity commences the uppermost cells of the gland-tip, after swelling, become detached and converted into slime (Fig. 320). Ultimately the epidermis is ruptured by the pressure of the slime, and cells are in turn rapidly transformed
Size: 2025px × 2469px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
