Leaf Apices

Attenuate

A sharp-pointed apex with concave margins that form an angle less than (<) 45 degrees.

Acuminate

A sharp-pointed apex with straight or convex margins that form an angle less than (<) 45 degrees.

Acute

An pointed apex with margins that form an angle between 45 and 90 degrees

Obtuse

A blunt apex with margins that form an angle greater than (>) 90 degrees.

Rounded

A curved apex with margins that form a smooth arc.

Caudate

An attenuate apex with a slender tail-like appendage at the tip.

Cuspidate

An acute apex with a stiff tip or cusp.

Mucronate

With a small extension of the midrib barely extending beyond the blade apex.

Emarginate

With a shallow depression at the apex, not exceeding ? of the distance to the centre of the leaf blade.

Truncate

A broad, flat apex, abruptly ending at right angles to the midvein.

Retuse

A rounded summit with a shallow depression at the apex, not exceeding 1/16 of the distance to the centre of the leaf blade.

Obcordate

Apex with prominent, rounded lobes, cut to 1/4; of the distance to the centre of the leaf blade.

Cleft

Apex divided into rounded or straight-margined lobes, cut 1/4 to 1/2 of the distance to the centre of the leaf blade.