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rootstock |
= rhizome |
STRUCTURE |
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An underground, usually horizontal stem, often superficially resembling a root but easily distinguished by the presence of nodes, from which it branches exogenously to produce the aboveground portion(s) of the shoot. |
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stipe 1 |
< stalk |
STRUCTURE |
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A small, slender connection between a pollinium caudicle and a viscidium; in Orchidaceae. |
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casing |
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STRUCTURE |
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The portion (if any) of a floral tube that is adnate to the gynoecium. See also collar, neck. |
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seed coat |
= testa |
STRUCTURE |
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The outer protective layer of a seed, developed from the ovular integument(s). |
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integument |
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STRUCTURE |
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A distinct layer of tissue that encloses and serves to protect the other tissues of an organ, especially a seed. |
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ovuliferous scale |
< cone scale, macrosporophyll (not recommended), megasporophyll |
STRUCTURE |
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A fertile scale in a female cone (megastrobilus), bearing one or two naked ovules, and subsequently seed(s), subtended by and borne closely upon a sterile, fleshy or woody scale sometimes termed a bract scale; in Pinophyta. |
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cladophyll |
= cladode, phylloclade |
STRUCTURE |
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A stem segment that functions as a leaf; often more or less compressed. |
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hair |
= capillus; > glochid, glochidium; < cilium, trichome |
STRUCTURE |
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A hair-like trichome. |
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lobe |
? division, segment |
STRUCTURE |
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Any generally convex, major peripheral protrusion or component sector that is delimited by concavities in the surface or margin and that is not proximally distinct from the remainder of the whole. |
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hypanthium 1 (broad sense) pl. hypanthia |
= floral cup (broad sense), floral tube |
STRUCTURE |
|
A complex structure comprising fused portions of the perianth and/or androecium of a flower, sometimes also including receptacular tissue; surrounding and wholly, partly, or not at all adnate to the gynoecium; subdivided morphologically into casing, collar and/or neck; sometimes bearing free distal portions of the constituent structures. |
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branchlet |
|
STRUCTURE |
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A branch of the highest or ultimate order. |
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rosette |
|
STRUCTURE |
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A set of leaves that are strongly congested and disposed in radial symmetry about the main stem at or very near its base, seeming to arise at the same level and often overlapping laterally; esp. the overwintering leaves of perennial herbs. |
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stipe 2 (broad sense, not recommended) |
< stalk; > gynophore, hypogynium, peduncle, petiole |
STRUCTURE |
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A stalk of or supporting a frond, inflorescence, or gynoecium. |
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megasporangium pl. megasporangia |
= macrosporangium (not recommended) |
STRUCTURE |
|
A sporangium that produces megaspores. |
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basal cell |
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STRUCTURE |
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Any of the ring of cells forming the lowermost (proximal) portion of an antheridial wall. |
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seed leaf |
= cotyledon |
STRUCTURE |
|
Any of the one or more primary foliar structures of an embryonic seed plant, proximal to all succeeding leaf primordia; sometimes serving as a storage organ for food reserves in the seed, as in peas and beans. |
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node |
|
STRUCTURE |
|
One of the evident sectors of a stem that occur sequentially along its length and from which leaves (megaphylls) and lateral branches arise exogenously. The anatomy of nodes differs from, but is not abruptly distinct longitudinally from, that of the intervening sectors (internodes), with which it is smoothly confluent and from which is distinguished by the lateral transit and egress of vascular traces interconnecting the stem and the leaves and branches that it bears. |
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pinnule |
< leaflet |
STRUCTURE |
|
A second- or higher-order division or leaflet of a pinnate frond; a division of a pinna; in Polypodiophyta. |
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cap cell |
|
STRUCTURE |
|
The single cell, or one of the several cells, forming the uppermost (distal) portion of an antheridial wall. |
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male cone |
= microstrobilus |
STRUCTURE |
|
A cone (strobilus) whose fertile organs are all microsporophylls. |
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pedicel |
< stalk |
STRUCTURE |
|
The stalk, when present, of a single flower, except when the flower is solitary and deemed to represent an evolutionarily reduced compound inflorescence borne directly upon a peduncle. |
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hypanthium 2 (strict sense) pl. hypanthia |
= floral cup (strict sense) |
STRUCTURE |
|
A marginal protrusion from or enlargement of the receptacle (torus) of a flower, encircling and wholly, partly or not at all adnate to the gynoecium, bearing the perianth and androecium. |
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strophiole |
= caruncle |
STRUCTURE |
|
An outgrowth from the seed coat (testa) around or near the hilum and micropyle, or from the raphe. |
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vesicle |
|
STRUCTURE |
|
A small bladder-like part consisting of an enclosing wall or covering and an empty or fluid-filled interior, sometimes turgid; esp. in citrus fruits (hesperidia). |
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stipel |
|
STRUCTURE |
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A stipular analogue subtending a leaflet. |
