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obovoid |
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solid shape |
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Inversely ovoid (egg-shaped). |
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lineate 1 |
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coloration |
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Having very narrow, straight, clear or colored lines that contrast with the ground color. |
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stephanoporate |
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architecture |
pollen grain |
Having more than three pores disposed equatorially. |
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fissured |
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relief |
bark |
Split or cracked vertically, diagonally, and/or horizontally in a regular or irregular pattern, the fissures not encircling the stem individually. |
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barbellate |
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architecture |
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Bearing one or more barbels. |
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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. |
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trioecious |
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reproduction |
taxon |
Having some flowers or spikelets functionally unisexual and some bisexual, some plants having only staminate or only pistillate types, other plants having only bisexual types. |
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actinodromous |
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venation |
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Having three or more primary veins that diverge radially from a point at or above the base of the blade and run toward the margin, reaching it or not. |
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pubescence |
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CHARACTER |
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Collective aspect of trichomes borne on the surface. Many of the terms traditionally used for describing pubescence have been defined and used in so many differing and often contradictory ways that they have become hopelessly ambiguous. This is attributable mainly to overdefinition within this portion of the traditional lexicon — that is, to highly arbitrary and widely variant restriction of a term's scope to some one detailed combination of trichome character states (shape, size, orientation, etc.). By derivation these are essentially general terms, really suited only for denoting overall aspect. The diversity actually encountered in nature defies comprehensive and unambiguous resolution into any limited suite of precisely specified, mutually exclusive, complex character states that can be associated with these terms, which are best used only in their general senses. Sometimes, such description will be sufficient in itself; more often, additionally or alternatively, the various attributes of the individual trichomes should be described. This is the only strategy that allows for full description of any possible condition, including the presence of more than one type of trichome. The various terms used for describing pubescence have never been semantically consistent; in some cases they refer to the trichomes themselves, while in others they apply to the bearing surface or structure; e.g., sericeous (the trichomes themselves are collectively silky) versus barbate (the structure is bearded). See also coating, indumentum (vesture). |
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indusiate |
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architecture |
sorus |
Having an indusium. |
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paraphysis pl. paraphyses |
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STRUCTURE |
|
An elongate, multicellular, sterile structure borne between sporangia within a sorus; in Polypodiophyta. |
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drupelet |
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nominative |
fruit |
Diminutively drupe-like but derived from one of the simple, superior ovaries of an apocarpous flower, having a fleshy fruit wall and a hard seed (pyrene) within, a distinct constituent in an aggregate fruit; esp. in Rosaceae. |
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dull |
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reflectance |
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Reflecting only a low proportion of incident light, with no apparent sheen. |
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rachilla 2 var. rhachilla |
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STRUCTURE |
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A second-order axis in an inflorescence, especially the axis bearing the florets in a spikelet; esp. in Cyperaceae, Poaceae (Gramineae). |
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connate-perfoliate |
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architecture |
opposite laminar structures |
Having the bases in each pair fused and together encircling the bearing axis. See also amplexicaulous, perfoliate. |
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bundle scar |
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FEATURE |
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A smaller scar within the bounds of a leaf scar at the point where a vascular bundle traversed the abscission layer between stem and leaf. |
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intravaginal |
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insertion |
|
Within the leaf sheath. |
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percurrent 2 |
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architecture |
tertiary laminar veins |
Perpendicular to and interconnecting adjacent parallel secondary veins, the secondary and tertiary veins together forming a scalariform pattern. |
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simple 2 |
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architecture |
trichome |
Unicellular and unbranched. |
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embryo |
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STRUCTURE |
|
The rudimentary spermatophyte contained within a viable seed. |
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geminicolpate |
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architecture |
pollen grain |
Having four or more surficial grooves (colpi) disposed in pairs. |
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receptacular |
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insertion |
|
Upon, arising from, or otherwise directly associated with the receptacle. |
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coronal |
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insertion |
|
Upon or otherwise directly associated with the corona. |
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knee 1 |
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STRUCTURE |
|
An abrupt bend in an axial or other elongate structure. |
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spathaceous 1 |
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architecture |
plant, inflorescence |
Bearing a spathe or spathes. |
