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elaiosome |
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STRUCTURE |
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A fleshy outgrowth from the seed coat (testa) that contains a high proportion of oil, usually attracting ants for dispersal. |
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main stem |
= primary stem; > bole, trunk |
STRUCTURE |
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The one, or any of the more than one, first-order stem(s), or first-order portion(s) of the collective stem, of a shoot. |
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short-shoot |
= spur |
STRUCTURE |
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A first- or higher-order woody stem branch having relatively unelongated internodes, thus proximate nodes, and limited duration of growth, usually branching little if at all; often a main locus of flower production; usually more or less perpendicular to the axis that bears it and resembling a spur projecting from it; sometimes becoming more or less spinose after elongation ceases; esp. in Rosaceae. |
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receptacular bract |
= pale, palea, palet |
STRUCTURE |
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A small papery (chartaceous) to membranous bract borne on the compound receptacle (torus) of a capitulum (head) in Asteraceae (Compositae). |
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haft |
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STRUCTURE |
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The narrow portion of a structure that is notably constricted. |
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sporophyll |
= spore leaf; > fertile frond |
STRUCTURE |
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A leaf or homologous structure that bears sporangia. See also megasporophyll (macrosporophyll, not recommended), microsporophyll. |
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strobilus pl. strobili |
= cone; > female cone, macrostrobilus (not recommended), male cone, megastrobilus, microstrobilus |
STRUCTURE |
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A compound or complex reproductive structure consisting of a central axis bearing congested sporophylls and sometimes other lateral members (e.g., bracts) that are sterile. |
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cane |
< culm, stem |
STRUCTURE |
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A woody, aboveground culm. Use of this term or culm instead of stem is a matter of tradition and preference, not of descriptive precision or necessity. |
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rachis 2 var. rhachis |
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STRUCTURE |
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A main or first-order axis of an inflorescence. |
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verticil |
= cycle, series, whorl |
STRUCTURE |
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A set of three or more lateral structures that are inserted around an axis at the same level. |
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spicule |
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STRUCTURE |
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A small, fine, stiff, acute protrusion that resembles a little spike. |
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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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aril 2 (strict sense) |
= arillus |
STRUCTURE |
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An appendicular structure that wholly or partly envelops a seed and is an outgrowth from the funicle or raphe, and thus is ontogenetically derived from the placenta; usually fleshy or pulpy, sometimes spongy or tufted-capillate, often brightly colored. |
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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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crista pl. cristae |
= crest |
STRUCTURE |
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A laterally elongate, relatively thin, irregular or notched, apical protrusion. |
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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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barbel |
= barbella |
STRUCTURE |
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A small barb. |
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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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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 |
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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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rosette |
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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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dissepiment |
< septum; > replum |
STRUCTURE |
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A wall or partition between adjacent locules of an ovary or fruit. |
