decurrent |
|
base |
laminar structure |
Having the lamina prolonged and adherent to the supporting axis beneath the point of vascular insertion, the prolonged portion termed a sterigma. |
wedge-shaped 1 |
= cuneate, obtriangular |
base |
laminar structure |
Attenuate with the sides more or less straight and intersecting at an acute angle. |
arrowhead-shaped 1 |
= sagittate |
base |
laminar structure |
Having two retrorse, generally triangular lobes, one to either side. |
halberd-head-shaped 1 |
= hastate |
base |
laminar structure |
Having two generally triangular lobes, one to either side, oriented more or less perpendicular to the central axis. |
sagittate 1 |
= arrowhead-shaped |
base |
laminar structure |
Having two retrorse, generally triangular lobes, one to either side. |
caudate 1 |
= tailed |
apex |
laminar structure |
Terminating in a relatively long, flexible, narrowly acuminate tip composed of laminar tissue. |
tailed 1 |
= caudate |
apex |
laminar structure |
Terminating in a relatively long, flexible, narrowly acuminate tip composed of laminar tissue. |
obtriangular 1 |
= cuneate, wedge-shaped |
base |
laminar structure |
Attenuate with the sides more or less straight and intersecting at an acute angle. |
notched |
= emarginate |
apex |
laminar structure |
Having a relatively small, acute, distal sinus. |
lamellate |
|
apex |
laminar structure |
Having two small terminal plates of tissue closely parallel to one another and perpendicular to the plane of the lamina. |
epinastic |
|
development |
laminar structure |
Having the adaxial surface differentiating and growing faster than the abaxial surface, thus, until maturity, development of the former more advanced than that of the latter at any given time and the structure as a whole revolute or recurved. |
emarginate |
= notched |
apex |
laminar structure |
Having a relatively small, acute, distal sinus. |
costate |
= ribbed |
architecture |
laminar structure |
Having one or more costae (ribs). |
hastate 1 |
= halberd-head-shaped |
base |
laminar structure |
Having two generally triangular lobes, one to either side, oriented more or less perpendicular to the central axis. |
hyponastic |
|
development |
laminar structure |
Having the abaxial surface differentiating and growing faster than the adaxial surface, thus, until maturity, development of the former more advanced than the latter at any given time and the structure as a whole involute or incurved. |
cordate 1 |
= heart-shaped |
base |
laminar structure |
Having two equal, more or less rounded, retrorse lobes, one to either side, overlapping or not, the intervening sinus relatively deep. |
unbranched 2 |
|
architecture |
laminar veinlet |
Not branching within the areole. |
branched 2 |
|
architecture |
laminar veinlet |
Dividing within the areole, each branch ending blindly. |
squarrose |
|
orientation |
lateral structure |
Having the proximal portion appressed and the distal portion deflexed, the latter more or less perpendicular to the surface of the bearing structure. |
upcurved |
= ascending, assurgent |
orientation |
lateral structure |
Spreading at the base and then curving upward or forward, the distal portion more or less parallel to the bearing structure. |
patent |
= porrect, salient, spreading |
orientation |
lateral structure |
Antrorse and diverging at an acute angle from the bearing structure. |
resupinate |
|
orientation |
lateral structure |
Inverted due to twisting distal to the point of insertion during development. |
downcurved |
= descending |
orientation |
lateral structure |
Salient at its base and then curving downward or backward. |
appressed |
|
orientation |
lateral structure |
Angled at or near the base and closely flattened against the surface of the bearing structure, thus more or less parallel to it. |
spreading |
= patent, porrect, salient |
orientation |
lateral structure |
Antrorse and diverging at an acute angle from the bearing structure. |