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indument |
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STRUCTURE / SUBSTANCE |
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See indumentum. |
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terminal |
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position |
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Apical and with the same developmental axis as the whole, of which it is the distalmost portion or appendage. |
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unctuous 2 |
= greasy, oily, oleaginous |
texture |
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Liquid or deformably solid, cohesive, and slippery to the touch. |
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abrupt |
= truncate |
apex |
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Having a distal boundary that is generally straight or plane and approximately perpendicular to the central axis. |
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apiculum 1 pl. apicula |
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STRUCTURE |
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A short, slender, angular tip that is not notably harder or stiffer than the main body of the bearing structure. See also mucro. |
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…lobate |
? …cleft, …fid, …lobed, …parted, …partite, …segmented |
plane shape |
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Having the number of lobes indicated by the prefix; as in bilobate. |
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bifurcate |
< forked, furcate |
solid shape |
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Having two terminal, antrorse branches or divisions arising from a common point or level, like the prongs of a fork. |
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palet 2 |
= pale, palea |
STRUCTURE |
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The upper or distal of the (usually) two distinctive bracts immediately subtending the flower in a grass (Poaceae) spikelet. |
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placenta pl. placentae, placentas |
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STRUCTURE |
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An ovule-bearing zone of the tissue surface bordering an ovary locule; of merely topographic, not histological, significance; may be a part of the ovary wall proper or an extension from it, or a part of the central axis of the ovary or an extension from it. |
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dehiscence |
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CHARACTER |
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Mode of opening (splitting or forming apertures). |
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embryo |
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STRUCTURE |
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The rudimentary spermatophyte contained within a viable seed. |
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sagittate 2 |
= arrowhead-shaped |
plane shape |
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Generally triangular, tapering gradually from the base to an acute apex, the base with a relatively large, acute, retrorse lobe to either side; like the outline of the broad lateral face of an arrowhead. |
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fistulose |
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solid shape |
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Basically tubular with closed ends. |
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silky |
= sericeous |
pubescence |
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Of or bearing long, fine, appressed, capillate trichomes and like silk to the touch. |
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embryo sac |
< megagametophyte |
STRUCTURE |
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The multinucleate generative cell of an ovule, within which fertilization and zygote formation occur; resulting from meiotic division of a megaspore mother cell within the nucellus, and thus genetically haploid; its contents generally considered to represent an evolutionarily reduced gametophyte. |
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five-… |
= penta… |
prefix |
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Indicating presence of or constitution by five entities of the type denoted by the term's stem; as in five-grooved, five-stamened, five-tepaled. |
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simple 1 |
|
architecture |
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Externally unitary and comprising only one basic morphological unit; not compound in either sense of that term. |
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glutinous 1 |
> mucilaginous, mucous, viscid |
coating |
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Of a sticky or slimy substance. |
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hyphodromous |
= one-veined, single-veined |
venation |
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Having one median, primary vein and no other venation externally evident. |
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lamina 2 pl. laminae |
= ray |
STRUCTURE |
|
The distal, relatively flat portion of the zygomorphic corolla of a ray floret, terminating in 0--4 teeth or lobes; in Asteraceae (Compositae). |
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tufted 2 |
> floccose |
pubescence |
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Of or bearing tufts of soft, fine, capillate trichomes that rub off easily. |
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basal cell |
|
STRUCTURE |
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Any of the ring of cells forming the lowermost (proximal) portion of an antheridial wall. |
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operculate |
= lidded |
architecture |
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Having an operculum (lid). |
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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). |
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phyllary |
= involucral bract; < bract (broad sense) |
STRUCTURE |
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One of the bracts composing the involucre of a capitulum (head); in Asteraceae (Compositae). |
