The base of a leaf when sheathing or investing a stem or branch, as in grasses.
an enveloping structure or covering enclosing an animal organ or part.
the lower part of a leaf that surrounds the stem; often visible on plants of the pondweed family; see Figure 4b.
n. (AS. sceth, shell or pod) a protective covering; lower part of leaf enveloping stem or culm.
The lower part of a leaf that encloses the culm; typically open or split and overlapping at the margins.
The basal portion of the leaf which clasps the stem
a more or less tubular portion of a structure surrounding another structure, such as the tubular portion of leaf bases of grasses that surround the stem.
Any elongated, more or less tubular sructure enveloping an organ or plant part.
The part of a grass leaf that wraps around the stem. It is important to distinguish the sheath from the stem: a hairy sheath, mistaken for a stem may mislead you in The key.
Any more or less tubular portion of the leaf surrounding the stem or culm, as in the Poaceae.
The part of a grass leaf which encircles the stem directly above its node of attachment.
A tubular, surrounding or enveloping structure.
tubular-type structure surrounding a plant part
The extension of the leaf that surrounds the stem.
Lower part of the leaf which surrounds the stem.
The lower part of the leaf that enfolds the stem in grasses, sedges, and rushes; in horsetails (Equisetum) used to describe the ring of papery leaves at each stem joint.
One of the two parts of a monocot leaf consisting of tissue arising from each node that is folded around the stem.
Long tubular structure (like a leaf base) that surrounds another part of plant as a stem.
lower part of the leaf that encloses the stem on grasses.
The part of a grass leaf that wraps around the stem. The leaf blade attaches to the end of the sheath at the collar. It is important to distinguish the sheath from the stem.
A portion of the leaf that wraps around the stem of the plant. Go Back
The protecting sheath on the culm of the bamboo when it is young.
A tubular structure surrounding some parts of the plant.
Basal tubular portion of a leaf surrounding the stem.
A modified leaf that encloses an emerging inflorescence or leaf.
A specially designed tubular instrument through which special obturators or cutting instruments can be passed, or blood clots, tissue fragments, calculi, etc, can be evacuated.
The base of a leaf that encircles the stem.
Case or cover such as an enveloping tubular structure like the tissue that encloses a muscle or nerve fiber.
The tubular portion of a grass leaf that encloses the stem.
see Culm Sheath above
The lower part of the grass leaf which wraps around the stem. See drawing of parts of a grass plant.
A tubular part surrounding another part, often papery. In pondweeds the portion of the leaf that surrounds the stem. See line drawing of stem parts
the lower portion of a grass leaf, clasping the stem; one of the wing-like extensions to the margins of the petiole which wrap around and enclose the stem; closed sheath: one in which the wings are fused to form a cylinder; open sheath: one with a slit on the side opposite to the lamina.
An expanded or tubular structure that partially encloses a stem or other organ.
a tube-like which covers another part of a plant, as in the lower portion of the leaf of grasses and sedges which surrounds the stem.
A tubular envelope; the lower part of the grass leaf which fits around the stem (culm).
A leaf-like structure that enfolds a stem, pseudobulb, or young inflorescence.
enveloping lower parts of leaves
A tubular covering that protects some body parts.
the extension of leaf tissue surrounding a stem.
Tubular structure formed around a chain of cells or around a bundle of filaments. The fine, polysaccharide sheaths formed by some filamentous cyanobacteria help bind soil particles together and can be seen dangling from soil surface fragments. Ectomycorrhizal fungi form a sheath of hyphae around plant roots.
The lowest part of some leaves which are wrapped around the main stem as in the Cattail.
In grasses and wildflowers, the lower part of the leaf that wraps around the stem.
An organ that partly or wholly surrounds another organ, such as a sheath of a grass leaf surrounding the stem.
A tubular structure surrounding part or all of an organ (e.g., the portion of a grass leaf that surrounds the stem).
This is found at the base of a grass leaf or stem.
Tubular structure formed by the base of a leaf encircling the stem (see diagram).