rostrum 1 pl. rostra |
= beak |
STRUCTURE |
|
A relatively long, tapering, more or less rigid and pointed enation or termination. |
flesh |
|
STRUCTURE |
|
Tissue that is fairly firm and dense, juicy or at least moist, and easily cut. |
craspedodromous, simple- |
|
venation |
|
Having a midvein that branches to either side along the length of the lamina, the secondary veins and their branches all running toward and terminating at the margin. |
punctate 2 |
= dotted |
relief |
|
Having small, round, shallow depressions or low protrusions. See also puncticulate (small-dotted). |
trochlear |
= pulley-wheel-shaped |
solid shape |
|
Discoid (disciform) but with the circumferential surface concave between faces. |
architecture |
|
CHARACTER |
|
Composite structural configuration as to type, orientation, symmetry, insertion, position, fusion, presence, number, relative size, shape, texture, differentiation, and/or derivation of components and features. Overlaps conceptually with habit. |
membrane |
|
STRUCTURE |
|
A relatively thin layer of tissue that covers or separates other, different tissue(s) and/or empty space(s). |
segmented |
? cleft, dissected, divided, lobed, lobate, parted, partite |
solid shape |
|
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). |
parallelodromous |
|
venation |
|
Having two or more primary veins that run more or less parallel to one another over most of the laminar length and converge near the apex. |
development |
= ontogeny |
CHARACTER |
|
Mode or pattern of growth and differentiation. |
interpetiolar |
< nodal |
insertion |
|
Upon the stem between the bases of opposite leaves. |
supramedial |
|
insertion |
|
Just above the middle of the structure in point. |
epidermis pl. epidermides, epidermises |
|
STRUCTURE |
|
The anatomically distinct, outermost, living tissue that encloses and protects the other tissues of a plant organ or part, usually overlaid by an exuded waxy cuticle; resulting from primary growth, disrupted and shed as a consequence of secondary growth if that occurs; consisting mainly of cells not further specialized, otherwise including various types of more specialized cells associated with trichomes and stomates. |
corky |
= suberous |
texture |
|
Firm, relatively light, discontinuous but strongly cohesive, and resilient. |
scabrellous |
= scabrellate, scabridulous |
relief |
|
Minutely scabrous (rough, scabrate, scabrid, scabridous). See also spiculate, which is not clearly distinct in its application. |
solid shape |
|
CHARACTER |
|
Overall three-dimensional form or aspect(s) thereof. Overlaps conceptually with architecture, arrangement, habit, insertion, orientation, position, relief, and texture (as to thickness). |
staminodial |
|
insertion |
|
Upon or otherwise directly associated with the staminodes. |
pistillodium pl. pistillodia |
= pistillode |
STRUCTURE |
|
Any sterile structure deemed to represent a modified pistil, homology being inferred on the basis of structural similarity, ontogeny, and/or position; sometimes nectariferous, sometimes connate with others or adnate to other floral structures. |
leaf-opposed |
|
insertion |
|
Nodal and directly opposite the leaf. |
caespitose |
|
habit |
|
See cespitose. |
toothlet |
|
STRUCTURE |
|
A diminutive tooth (dens). See also sawtooth, sawtoothlet, scallop (crena), scalloplet (crenule). |
anticlinal |
|
orientation |
|
Perpendicular to some given plane of reference; applied especially to the plane of cell division when it is oriented at right angles to the generalized plane of the structural surface. |
filamentous |
|
texture |
|
Composed of filiform (thread-like) strands with no intervening tissue. |
palea 1 pl. paleae, paleas |
= pale, palet, receptacular bract |
STRUCTURE |
|
A small papery (chartaceous) to membranous bract borne on the compound receptacle (torus) of a capitulum (head) in Asteraceae (Compositae). |
indumentum pl. indumenta var. indument |
= vesture |
STRUCTURE / SUBSTANCE |
|
The trichomes and/or exuded substance that overlie a surface proper, regarded collectively. See also coating, pubescence. |