Cross-shaped; having four petals arranged in a cross (characteristic of Brassicaceae family).

Small, rounded soil aggregates that give soil a porous, friable texture.

A hard surface layer on soil, formed by compaction or cementation.

Having a hard, brittle texture; crust-like.

A plant that reproduces by spores rather than seeds (ferns, mosses, algae, fungi).

Hooded or hood-shaped; having a structure resembling a hood.

An old term for a basal bulb or corm.

A crown-like structure derived from the corolla (as in Narcissus).

A crown-like outgrowth between the corolla and stamens (e.g., in milkweeds).

Shaped like a crown.