A stalk or stem-like structure that supports one or more sporangia.

A spore-producing organ or structure found in various plants, fungi, and algae.

Plural of sporangium, referring to the reproductive structure that produces spores in plants, fungi, and algae.

A flower arrangement in which individual flowers are attached directly to a central, unbranched stalk.

A small, individual unit of a spike, typically found in grasses and some other plants.

A small, secondary flower or unit of a spike, commonly seen in grasses and sedges.

A sharp, rigid outgrowth or projection from a plant or animal, typically serving as a defense mechanism.

A stiff, pointed structure that extends from a plant or animal body, often for protection.

A modified leaf, leaf tip, or stem that is hard and pointed, often for defense or protection.

Having spiny characteristics or bearing spines, often referring to a plant with sharp, pointed structures.