areole 1 |
= areola |
STRUCTURE |
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Any distinctive surficial discontinuity of generally circular outline, whether concave, flush, or convex; when protuberant, sometimes bearing trichomes or spines, as in some Cactaceae. This term is used only when such entities are deemed structurally distinctive enough to merit description in their own rights, rather than as aspects of the surface. |
pale 1 |
= palea, palet, receptacular bract |
STRUCTURE |
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A small papery (chartaceous) to membranous bract borne on the compound receptacle of a capitulum (head) in Asteraceae (Compositae). |
ala 2 pl. alae |
= wing |
STRUCTURE |
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One of the two lateral petals in a papilionaceous corolla. |
funiculus pl. funiculi |
= funicle; < stalk |
STRUCTURE |
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A stalk that attaches an ovule to a placenta of the ovary wall. |
columella 1 pl. columellae, columellas |
= carpophore; < stalk |
STRUCTURE |
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Any pedestal-like prolongation of a floral receptacle extending beyond the distalmost level of perianth insertion and bearing the gynoecium. |
testa pl. testae |
= seed coat |
STRUCTURE |
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The outer protective layer of a seed, developed from the ovular integument(s). |
spur 2 |
= short-shoot |
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. |
ear |
= auricle |
STRUCTURE |
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A small, rounded, lateral lobe at the base of a laminar structure, lying in more or less the same plane as the remainder of the lamina. |
rostellum 2 pl. rostella |
= beaklet |
STRUCTURE |
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A sterile excrescent stigma lobe protruding between the anther and the functional stigma lobes of a column; sometimes forming one or more viscidia at pollinium maturity; esp. in Orchidaceae. |
pulvinus pl. pulvini |
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STRUCTURE |
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A short, cushion-like swelling at the junction of stem and leaf or of inflorescence axis and branch. |
megastrobilus pl. megastrobili |
= female cone, macrostrobilus (not recommended) |
STRUCTURE |
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A strobilus (cone) whose fertile organs are all megasporophylls. |
internode |
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STRUCTURE |
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Any portion of a stem between two successive nodes. |
cone scale |
< macrosporophyll (not recommended), megasporophyll, microsporophyll; > ovuliferous scale |
STRUCTURE |
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One of the membranous, fleshy, or woody sporophylls of a cone (strobilus); esp. in Pinophyta. |
areole 2 |
= areola |
STRUCTURE |
foliaceous structure |
Any distinguishable laminar portion bounded on all sides by anastomosing veins and not traversed or dissected by any vasculature other than veinlets. |
rhizoid |
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STRUCTURE |
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Any structure that is similar to a root in appearance and function but that is not a true root ontogenetically and anatomically, especially one produced from a gametophyte thallus. |
staminode |
= staminodium |
STRUCTURE |
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Any sterile structure deemed to represent a modified stamen, homology being inferred on the basis of structural similarity, ontogeny, and/or position; sometimes petaloid, sometimes nectariferous, sometimes connate with others or adnate to other floral structures. |
pistillode |
= pistillodium |
STRUCTURE |
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Any sterile structure deemed to represent a modified pistil, homology being inferred on the basis of structural similarity, ontogeny, and/or position; sometimes nectariferous, sometimes connate with others or adnate to other floral structures. |
scape |
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STRUCTURE |
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A leafless, essentially naked, inflorescence-bearing stem (or peduncle) arising directly from a caudex or rhizome, its point of insertion slightly beneath, at, or slightly above the substrate surface. |
pale 2 |
= palea, palet |
STRUCTURE |
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The upper or distal of the (usually) two distinctive bracts immediately subtending the flower in a grass (Poaceae) spikelet. |
columella 2 pl. columellae, columellas |
= carpophore; < stalk |
STRUCTURE |
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The stalk supporting a mericarp after dehiscence of a schizocarpic fruit, the central axis of the fruit having split longitudinally to yield two or four such stalks; composed of receptacular and (primarily) gynoecial tissues; esp. in Apiaceae (Umbelliferae). |
petal |
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STRUCTURE |
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One of the one or more constituent members of a corolla; colored and showy in many taxa, inconspicuous in size and/or color in others; may be distinct or else connate with one or more others, and/or may be free or else adnate to one or more other floral structures. |
whorl |
= cycle, series, verticil |
STRUCTURE |
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A set of three or more lateral structures that are inserted around an axis at the same level. |
tunic |
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STRUCTURE |
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A membranous covering outside the epidermis, especially around bulbs and corms, often becoming loose, sometimes scarious. |
isthmus |
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STRUCTURE |
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A narrower portion connecting two wider or broader portions of an inclusive structure. |
stolon |
= runner |
STRUCTURE |
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A slender stem that grows horizontally upon or just beneath the ground surface, rooting at the nodes and giving rise to erect shoot segments at some nodes and/or at its apex. |