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pear-shaped |
= pyriform |
solid shape |
|
Basically circular in transverse section, broadest toward one end, attenuate toward and much narrower at the other, both ends rounded; slenderly turbinate or obturbinate; like a pear. |
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hydathode |
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STRUCTURE |
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A multicellular, anatomically distinctive structure located within a leaf at its periphery, its cells surrounding a central canal that opens to the exterior, through which water is actively discharged under humid conditions that impede the rate of transpiration; this liquid discharge is termed guttation. |
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striped |
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coloration |
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Having one or more elongate, relatively narrow and, when multiple, more or less parallel, areas of contrasting hue and/or intensity. |
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capillate |
= capillary, hair-like |
solid shape |
|
Finely filiform; like a hair. |
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hydrocyanic |
= almondy |
odor |
|
Pungently fruity like almonds, due to the presence of hydrocyanin or a closely related compound. |
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capillus pl. capilli |
= hair; > glochid, glochidium; < cilium, trichome |
STRUCTURE |
|
A hair-like trichome. |
|
dotted 2 |
= punctate |
relief |
|
Having small, round, shallow depressions or low protrusions. See also small-dotted (puncticulate). |
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rachis 1 var. rhachis |
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STRUCTURE |
|
A main or first-order axis of a compound leaf blade. |
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versatile |
|
fixation |
|
Attached in a manner allowing free rotation and declination. |
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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. |
|
glutinous 2 |
> mucilaginous, mucous, viscid |
texture |
|
Sticky or slimy. |
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planoconvex |
|
solid shape |
|
Relatively thin with opposite broad faces, one plane and one convex. |
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lepis pl. lepides |
= squama; < scale, trichome |
STRUCTURE |
|
A relatively thick, planate trichome. See also squamella. |
|
erect |
|
orientation |
|
Perpendicular to the horizon or to the general plane of a bearing structure. |
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androecial tube |
|
STRUCTURE |
|
The tubular portion of an androecium in which the component structures have fused with one another laterally over part or all their lengths. |
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oblique 1 |
|
base |
|
Asymmetric about its longitudinal axis. |
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hilum 1 pl. hila |
|
FEATURE |
|
The scar left on a seed at the point of its abscission from the funiculus. |
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disciform 1 |
= discoid |
solid shape |
|
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). |
|
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. |
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megagametophyte |
> embryo sac |
PLANT |
|
A gametophyte whose fertile organs (gametangia) are all archegonia. |
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flanged |
|
solid shape |
|
Having a relatively broad circumferential rim or ridge that protrudes laterally. |
|
coma pl. comae, comas |
< tuft |
STRUCTURE |
|
A prominent single tuft of relatively long and slender, flexible, capillate trichomes; esp. from a seed, as in Asclepias (Asclepiadaceae). |
|
papillar(y) |
= papilliform |
solid shape |
|
Small, conoidal, and protruding from a larger structure; resembling a pimple; esp. trichomes. |
|
calcarate |
= spurred |
base |
|
Having a relatively slender protrusion resembling a spur. |
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supervolute |
|
vernation |
|
Each with one side rolled adaxially inward from the margin and enveloped by the abaxially rolled opposite side. |
