arrowhead-shaped 2 |
= sagittate |
plane shape |
|
Generally triangular, tapering gradually from the base to an acute apex, the base with a relatively large, acute, retrorse lobe to either side; like the outline of the broad lateral face of an arrowhead. |
supramedial |
|
insertion |
|
Just above the middle of the structure in point. |
intricate |
|
arrangement |
|
Entangled; irregularly intertwined and not readily disentangled. |
calyx tube |
|
STRUCTURE |
|
A relatively narrow, fully connate portion of a synsepalous (gamosepalous) calyx proximal to a broader portion (limb) that comprises the distinct or connate distal portions of the sepals. |
plicate 3 |
= plaited, pleated |
vernation |
|
Having alternately adaxial and abaxial lengthwise folds, resembling a closed fan. |
branchlet |
|
STRUCTURE |
|
A branch of the highest or ultimate order. |
staminal |
|
position |
|
Upon or otherwise directly associated with the stamens. |
embryotega pl. embryotegae, embryotegas |
|
STRUCTURE |
|
A small, hardened, lid-like portion of the testa (seed coat) at the micropyle of some seeds, detaching at germination. |
hypogeous |
= hypogeal, subterranean |
location |
|
Within the ground, beneath its surface; esp. of cotyledons following seed germination. |
xylary |
|
position |
|
Within or otherwise directly associated with the wood. |
pulvinate 2 |
= cushion-shaped, mound-shaped, pulviniform |
solid shape |
|
Essentially round in transverse section, much broader than long or high, with a convex distal face that intersects either a more or less plane proximal face or, when the structure is sessile, its bearing surface. |
margin |
|
CHARACTER |
|
Configuration of all or part of the periphery of a planate structure, sometimes referred to as though it were discrete and an entity in its own right for descriptive purposes. The extent of the area considered to pertain to the margin in a given case is, of necessity, subjectively determined. As a general rule, peripheral concavities that do not exceed 1/5 the distance from the generalized edge to the center or main axis of the structure are considered components of marginal configuration, deeper concavities being considered components of overall shape. The margin is sometimes considered to be only the infinitely thin boundary itself, and such a definition is probably the one most technically correct from the standpoint of geometry and general usage. However, it is inconsistent with traditional usage in descriptive botany, which treats the margin as an entity of substance both semantically and conceptually. The semantic antecedent of some descriptors is "margin," whereas the antecedent of others is the structure as a whole (e.g., leaf). |
cobwebby |
= arachnoid |
pubescence |
|
Of fairly sparse, fine, white, loosely tangled, capillate trichomes. |
depressed |
< flattened |
solid shape |
|
Flattened distally, perpendicular to the longitudinal axis, as though pressed from the top, the external surface otherwise basically convex. Often used in combination with some other term that describes the overall shape exclusive of ("before") flattening, e.g., depressed-globose. See also compressed (complanate), obcompressed. |
pitcher-shaped |
= ascidiform |
solid shape |
|
Having a more or less tubular, radially or bilaterally symmetrical body closed at the base and broadening toward a more or less open apex sometimes lidded or overarched by a prolongation of one side; like a pitcher. |
subulate 1 |
= awl-shaped |
plane shape |
|
Narrowly triangular or truncate-triangular and broadest at the base; like the outline of the lateral face of an awl. |
sellaeform |
|
solid shape |
|
See selliform. |
nectar |
|
SUBSTANCE |
|
An aqueous exudate of high sugar content. |
sporophyll |
= spore leaf; > fertile frond |
STRUCTURE |
|
A leaf or homologous structure that bears sporangia. See also megasporophyll (macrosporophyll, not recommended), microsporophyll. |
dodeca… |
= twelve-… |
prefix |
|
Indicating presence of or constitution by twelve entities of the type denoted by the term's stem; as in dodecandrous, dodecalocular, dodecastylous. |
pappus pl. pappi |
|
STRUCTURE |
|
A set of one or more awns (aristae, bristles, setae) or scales at the summit of an inferior ovary just beneath or outside the free portion of the corolla; persisting in the fruit (cypsela) and often aiding wind or animal dispersal; in Asteraceae (Compositae). Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall. |
rostellum 2 pl. rostella |
= beaklet |
STRUCTURE |
|
A sterile excrescent stigma lobe protruding between the anther and the functional stigma lobes of a column; sometimes forming one or more viscidia at pollinium maturity; esp. in Orchidaceae. |
flaccid |
|
texture |
|
Limp, sometimes appearing withered or shrunken. See also tumid (swollen, turgid). |
circinate 2 |
|
vernation |
|
Having each leaf (frond) rolled adaxially from the sides and downward from the apex, forming a tight, flat coil; esp. in Polypodiophyta. |
terete |
|
solid shape |
|
Elongate and transversely round, gradually attenuate from base to apex; attenuate-cylindric or attenuate-tubular, broadest at the base. See also obterete. |