acuminate |
= concave-tapered |
apex |
|
Gradually diminishing in width or diameter to a slender tip, the sides longitudinally concave. Corresponds with attenuate for base shape. |
acute |
= sharp |
apex |
|
Sharply angular; regularly and more or less straightly attenuate to an angular tip, the sides intersecting at an angle of less than 90°. |
conic(al) |
= cone-shaped |
apex |
|
Transversely round, essentially triangular in median longitudinal section, and broadest proximally. See also obconic(al). |
notched |
= emarginate |
apex |
laminar structure |
Having a relatively small, acute, distal sinus. |
blunt 1 |
= obtuse |
apex |
|
Bluntly angular; having an angular tip whose generalized sides intersect at an angle of 90° or more. |
lamellate |
|
apex |
laminar structure |
Having two small terminal plates of tissue closely parallel to one another and perpendicular to the plane of the lamina. |
emarginate |
= notched |
apex |
laminar structure |
Having a relatively small, acute, distal sinus. |
…dentate 1 |
= …-toothed |
apex |
|
Generally truncate but with the number of antrorse, attenuate, distal lobes indicated by the prefix; as in tridentate. |
spinulose |
|
apex |
|
Finely spinose. |
pungent 1 |
= acrid |
apex |
|
Terminating abruptly in a rigid, relatively short, sharp point composed of both vascular and laminar tissues. |
abrupt |
= truncate |
apex |
|
Having a distal boundary that is generally straight or plane and approximately perpendicular to the central axis. |
obtuse 1 |
= blunt |
apex |
|
Bluntly angular; having an angular tip whose generalized sides intersect at an angle of 90° or more. |
crested |
= cristate |
apex |
|
Having a laterally elongate, relatively thin, irregular or notched protrusion. |
rounded |
|
apex |
|
Convex overall and more or less regularly curved. |
barbed 1 |
|
apex |
|
Terminated by a small, relatively stiff, acutely reflexed, hook-like structure. |
apiculate |
|
apex |
|
Terminating abruptly in a short, slender, angular tip that is not notably harder or stiffer than the main body of the structure. See also mucronate, mucronulate. |
truncate 1 |
= abrupt |
apex |
|
Having a distal boundary that is generally straight or plane and approximately perpendicular to the central axis. |
hooked |
= hamate, uncinate |
apex |
|
Having a recurved terminal portion that resembles a hook. |
mucronate |
|
apex |
|
Terminating abruptly in a short, hard point that is a continuation of vascular tissue. See also apiculate, mucronulate. |
aristate 1 |
= awned, bristled |
apex |
|
Bearing one or more aristae (awns, bristles, setae). |
sharp |
= acute |
apex |
|
Acutely angular; regularly and more or less straightly attenuate to an angular tip, the sides intersecting at an angle of less than 90°. |
mucronulate |
|
apex |
|
Finely mucronate. See also apiculate. |
piliferous |
|
apex |
|
Having a distinct, fine, weak, hair-like portion or protrusion. |
horned |
= corniculate |
apex |
|
Bearing one or more horns (cornicula). |
small-beaked |
= rostellate |
apex |
|
Diminutively beaked (rostrate). |