acute | Margins straight to convex forming a terminal angle 45 -90 . |  |
amplexicaule | Completely clasping the stem. |  |
asymmetric | Without regularity in any dimension. | |
attenuate | Acuminate with concave margins. |  |
auriculate | Lobe rounded; sinus depth variable; outer margin concave, inner convex or straight. |  |
connate perfoliate | Having bases of opposite leaves fused around the stem. |  |
cordate | Lobe rounded; sinus depth 1/8-1/4 distance to midpoint of blade; margins convex and/or straight. |  |
cuneate | Margins straight to convex forming a terminal angle 45 -90 . |  |
decurrent | Extending along stem downward from leaf base. |  |
hastate | Margins variable; lobe pointed; oriented outward or divergently in relation to petiole or midrib. |  |
oblique | Having an asymmetrical base. |  |
ocreate | Having a stipular tube surrounding stem above insertion of petiole or blade. |  |
peltate | Usually having petiole attached near the center on the underside of blade. |  |
perfoliate | Having base completely surrounding stem. |  |
reniform | Lobe rounded; sinus depth variable; outer margin convex or straight, inner concave. |  |
sagittate | Lobe pointed and oriented downward or inward in relation to petiole or midrib; sinus depth variable; margins variable. |  |
sessile | Without petiole or petiolule. |  |
subtruncate | | |
truncate | Cut straight across; ending abruptly almost at right angles to midrib or midvein. |  |