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gynecandrous |
|
reproduction |
taxon |
Monoecious, each inflorescence having a distal sector with only pistillate flowers and a proximal sector with only staminate ones. |
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pulvinate 1 |
|
architecture |
inflorescence axis, petiole |
Having a pulvinus. |
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glomerule |
|
nominative |
inflorescence |
A compact cluster of capitula (heads), sometimes subtended by an involucre; thus, a compound capitulum (head); esp. in Asteraceae (Compositae). |
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reticulodromous |
|
venation |
|
Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, branching repeatedly, becoming less distinct, and yielding a dense higher-order reticulum near the margin. |
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heterocolpate |
|
architecture |
pollen grain |
Having long, narrow, regularly disposed lacunae (pseudocolpi). |
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receptacular |
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insertion |
|
Upon, arising from, or otherwise directly associated with the receptacle. |
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abortive |
|
maturation |
spore, pollen, seed |
Never attaining functional maturity due to defective or arrested development. |
|
apex pl. apices |
|
CHARACTER |
|
Configuration of the uppermost, distal, or terminal portion of a structure, its extent determined somewhat subjectively in relation to the shape of the structure as a whole. The concept of apex varies from one descriptive context to another, since the apex is not a clearly delimited, morphologically distinct entity. The terms for describing apical condition are not strictly coordinate logically — some are more inclusive than others, some describe conditions involving what can be regarded as appendages, and some refer to the apex in a developmental as well as a strictly topological sense — and precise characterization may require using more than one descriptor. The semantic antecedent of some descriptors is "apex," whereas the antecedent of others is the structure as a whole (e.g., leaf ). |
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involucral |
|
derivation |
aril |
Produced from or a modification of a persistent involucre investing the seed. |
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inframedial |
|
insertion |
|
Slightly below the middle of the structure in point. |
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septal |
|
insertion |
|
Upon or otherwise directly associated with the septum or septa. |
|
longitudinal 1 |
|
dehiscence |
|
Parallel to the central axis. |
|
limp |
|
texture |
|
Lacking stiffness in in one or more dimensions, thus drooping or sagging where unsupported. |
|
stephanocolpate |
|
architecture |
pollen grain |
Having more than three surficial grooves (colpi) oriented meridionally. |
|
…merous |
|
architecture |
compound or compound-complex structure |
Having the number of equivalent component parts indicated by the prefix (e.g., petals in a corolla), or having different component sets of equivalent parts of that number in each set (e.g., calyx and corolla in a perianth); as in monomerous, oligomerous, polymerous, tetramerous, trimerous. |
|
squarrose |
|
orientation |
lateral structure |
Having the proximal portion appressed and the distal portion deflexed, the latter more or less perpendicular to the surface of the bearing structure. |
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marginal |
|
insertion |
|
Upon or otherwise directly associated with the margins. |
|
straight |
|
course |
|
Lacking significant curves or bends. |
|
motile |
|
habit |
|
Able to translocate by intrinsic means, as by flagellar propulsion. |
|
basicauliramous |
|
architecture |
plant |
Having the stem(s) branching at or near the base. See also basiramous. |
|
deliquescent 1 |
|
architecture |
axis, laminar vein |
Branching laterally and repeatedly such that the initial axis loses its prominence over the length of the structure and seems to dissolve into the succesive orders of branches. See also excurrent. |
|
summer annual |
|
nominative |
plant |
Annual, germinating in spring or early summer, reproducing sexually with no prolonged vegetative stage beforehand, and dying by late summer or autumn. See also winter annual. |
|
dovetailing |
|
habit |
trichome |
Papillate and serving to hold a surface to the opposing one of an appressed structure by interlocking with others on the opposing surface; sometimes furcate. |
|
axil |
|
FEATURE |
|
The space bounded by and near the vertex of the distal angle between a lateral structure, especially a leaf, and the axis that bears it. |
|
nucellus pl. nucelli |
|
STRUCTURE |
|
The distinct, genetically diploid tissue layer immediately surrounding the embryo sac of an ovule; often considered equivalent to a megasporangium wall. |
