palinactinodromous |
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venation |
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Compound actinodromous, with higher-order branch radiations above the level of and similar to the primary one. |
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. |
indumentum pl. indumenta var. indument |
= vesture |
STRUCTURE / SUBSTANCE |
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The trichomes and/or exuded substance that overlie a surface proper, regarded collectively. See also coating, pubescence. |
bract 2 (strict sense) |
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STRUCTURE |
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Any primary or first-order lateral structure ontogenetically and anatomically analogous with, and therefore presumably homologous with, but relatively smaller than, a leaf, especially when subtending an inflorescence, other reproductive structure, or portion thereof; putatively, an evolutionarily reduced leaf. |
di… |
= bi…, two-… |
prefix |
|
Indicating presence of or constitution by two entities of the type denoted by the term's stem; as in diadelphous, dicyclic, dimerous. See also individual entries for terms with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination; and also double-… (bi…, twice-…). |
barbellula pl. barbellulae |
= barbellule |
STRUCTURE |
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A small barbel (barbella); a very diminutive barb. |
subterminal |
= subapical |
position |
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Lateral and just below the apex. |
carnose |
= fleshy, sarcous |
texture |
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Fairly firm and dense, juicy or at least moist, and easily cut. |
segmented |
? cleft, dissected, divided, lobed, lobate, parted, partite |
solid shape |
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Having two or more major component sectors or peripheral protrusions that are delimited by concavities in the surface or margin and that are not proximally distinct from the remainder of the whole. The meanings of this term and its approximate synonyms sometimes have been supposed to differ according to the depth of the delimiting concavities relative to the midline or midpoint of the overall structure, and/or to the shape or proportions of the protusions or sectors; however, there has been little consistency in the applications of the various terms according to such distinctions, which are ones only of degree and are necessarily arbitrary in any case. In general usage, these terms differ only indistinctly and connotatively: cleft, lobed (or lobate), parted (or partite) and segmented tend to connote fewer protrusions or sectors; lobate usually connotes as well a generally rounded shape; dissected tends to connote more numerous sectors that are elongate and angular. See also cut (incised, lacerate, torn), laciniate (slashed). |
male cone |
= microstrobilus |
STRUCTURE |
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A cone (strobilus) whose fertile organs are all microsporophylls. |
groove |
= colpus, fossula, furrow, sulcus, vallecula |
FEATURE |
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A longitudinal depression that is relatively shallow and narrow. |
fistulose |
|
solid shape |
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Basically tubular with closed ends. |
…segmented |
? …cleft, …fid, …lobate, …lobed, …parted, …partite |
solid shape |
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Having the number of segments indicated by the prefix; as in ten-segmented. |
mamilla pl. mamillae |
|
STRUCTURE |
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A nipple- or teat-shaped protrusion. |
tuberculose 2 |
= tubercular |
solid shape |
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Comprising small knot-like segments. |
annulus 1 pl. annuli |
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STRUCTURE |
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A small ring-like protrusion from the strobilar stalk near its base and below the lowermost sporangiophores, sometimes bearing small sporangia; esp. in Equisetum. |
lanciform |
= lancehead-shaped, lanceoloid |
solid shape |
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Considerably longer than broad, compressed or not, broadest near the base and somewhat concavely attenuate to the apex, the attenuation in all median longitudinal planes or else largely confined to one, depending upon the extent of compression, if any. See also oblanciform (oblanceoloid). |
small-dotted |
= puncticulate |
coloration |
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Finely dotted (punctate). |
compact |
= congested, crowded |
architecture |
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Having equivalent constituent parts disposed very near to one another. |
operculum pl. opercula |
= lid |
STRUCTURE |
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A distal, cover-like portion of a structure whose main body is otherwise closed, transversely discontinuous with the main body around most of the circumference, or becoming partially or wholly separate by transverse dehiscence; as of an ascidium (pitcher), pollen grain, pyxis, or sporangium (spore case). |
concave-tapered 2 |
= attenuate |
base |
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Gradually diminishing in width or diameter toward the proximal end, the sides longitudinally concave. Corresponds with acuminate for apex shape. |
hilum 1 pl. hila |
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FEATURE |
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The scar left on a seed at the point of its abscission from the funiculus. |
torsive |
= contortuplicate |
aestivation |
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Plicate and contorted. |
bi… 1 |
= di…, two-… |
prefix |
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Indicating presence of or constitution by two entities of the type denoted by the term's stem; as in bicarpellate, biciliate, bifid, bilocular. See also entries for particular terms beginning with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination. |
pilose |
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pubescence |
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Bearing relatively sparse, soft, slender, more or less erect capillate trichomes. See also pilosulous. |