mixed-craspedodromous |
|
venation |
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Having a midvein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, some becoming indistinct before reaching it, others terminating there. |
verrucose |
= tuberculate, tuberculose, warty |
relief |
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Covered with small, relatively broad, irregularly shaped, obtuse protrusions. |
glutinous 1 |
> mucilaginous, mucous, viscid |
coating |
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Of a sticky or slimy substance. |
culm |
< cane, stem |
STRUCTURE |
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A stem of a sedge (Cyperaceae) or grass (Poaceae), usually hollow. Use of this term or cane instead of stem is a matter of tradition and preference, not of descriptive precision or necessity. |
antheridium pl. antheridia |
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STRUCTURE |
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A male gametangium; a multicellular fertile organ of a mature gametophyte within which male gametes (antherozoids, spermatozoids) are produced and from which they are discharged, in some taxa forcibly, through a pore. Technically present but highly reduced and of no descriptive significance in Magnoliophyta and part of Pinophyta. |
planoconcave |
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solid shape |
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Relatively thin with opposite broad faces, one plane and one concave. |
lepidote |
= squamose; < scaly |
pubescence |
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Bearing lepides (squamae). See also squamellose. |
lepis pl. lepides |
= squama; < scale, trichome |
STRUCTURE |
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A relatively thick, planate trichome. See also squamella. |
erect |
|
orientation |
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Perpendicular to the horizon or to the general plane of a bearing structure. |
oblique 1 |
|
base |
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Asymmetric about its longitudinal axis. |
hilum 1 pl. hila |
|
FEATURE |
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The scar left on a seed at the point of its abscission from the funiculus. |
disciform 1 |
= discoid |
solid shape |
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Relatively thin with two round, plane or convex, opposite broad faces and a rounded circumferential edge; like a disc. See also lenticular (biconvex, lens-shaped), meniscoid, placentiform (placenta-shaped), trochlear (pulley-wheel-shaped). |
axis pl. axes |
|
STRUCTURE |
|
Any unitary and longitudinally continuous structure that bears laterally the subordinate portion(s), if any, of a plant root or shoot or any subdivision thereof and that represents the main line of structural development and/or symmetry distal to its origin, irrespective of the particular ontogenetic growth pattern involved. See also primary axis. |
pubescent 2 (strict sense) |
= downy |
pubescence |
|
Of or bearing relatively short, slender, soft, more or less erect, capillate trichomes. See also puberulent. This is one of the most ambiguous terms in the botanical lexicon; it should not be used unless its intended meaning is explicit. |
megagametophyte |
> embryo sac |
PLANT |
|
A gametophyte whose fertile organs (gametangia) are all archegonia. |
flanged |
|
solid shape |
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Having a relatively broad circumferential rim or ridge that protrudes laterally. |
papillar(y) |
= papilliform |
solid shape |
|
Small, conoidal, and protruding from a larger structure; resembling a pimple; esp. trichomes. |
androecial tube |
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STRUCTURE |
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The tubular portion of an androecium in which the component structures have fused with one another laterally over part or all their lengths. |
supervolute |
|
vernation |
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Each with one side rolled adaxially inward from the margin and enveloped by the abaxially rolled opposite side. |
retrorse |
|
orientation |
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Directed generally backward, toward the proximal end of the context of reference, parallel or at an acute angle to the bearing structure. |
casing |
|
STRUCTURE |
|
The portion (if any) of a floral tube that is adnate to the gynoecium. See also collar, neck. |
valleculate |
= colpate, fossulate, furrowed, grooved, sulcate |
architecture |
|
Having one or more relatively narrow and shallow longitudinal depressions; esp. fruits of Apiaceae (Umbelliferae). |
nodal |
> interpetiolar |
insertion |
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Upon or associated with the nodes. |
wrinkled |
= corrugate, rugose |
relief |
|
Having irregular, narrow ridges or creases, the intervening areas flat to shallowly concave or convex, appearing overall as though crumpled and then spread out. See also rugulose. |
small-sawtoothed |
= serrulate |
margin |
|
Finely sawtoothed (serrate). See also scalloped (crenate), small-scalloped (crenulate), small-toothed (denticulate), toothed (dentate). |