Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 498
n ofthe seed of Ph/ytel&phas (known as vegetable ivory), are made up ;and we see the use of this very curious arrangement, in permittingthe cells, even after they have attained a considerable degree ofconsolidation, still to remain permeable to the fluid required for thenutrition of the parts… … Spiral cells of leaf of Onchlim form a single, a double, or even a triple or quadruple spire (Fig.244). Sucli spiral cells are found most abundantly in the leaves ofcertain Orcliideous plants, immedi-ately beneath the cuticle, where theyare brought into view by vertical sec-tions ; and they may be…
Microscopy · Biology
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