Isoetes bolanderi
Encyclopedia
Isoetes bolanderi is a species of quillwort, a type of lycopod
Lycopodiophyta
The Division Lycopodiophyta is a tracheophyte subdivision of the Kingdom Plantae. It is the oldest extant vascular plant division at around 410 million years old, and includes some of the most "primitive" extant species...

. Its common name is Bolander's quillwort. This is a "primitive" aquatic plant
Aquatic plant
Aquatic plants are plants that have adapted to living in aquatic environments. They are also referred to as hydrophytes or aquatic macrophytes. These plants require special adaptations for living submerged in water, or at the water's surface. Aquatic plants can only grow in water or in soil that is...

 native to western North America which grows almost entirely underwater in lakes and other water bodies. It grows from a corm
Corm
A corm is a short, vertical, swollen underground plant stem that serves as a storage organ used by some plants to survive winter or other adverse conditions such as summer drought and heat ....

-like stem which remains buried in the mud, producing pointed, cylindrical leaves approaching 20 centimeters in maximum length. It reproduces via spherical sporangia
Sporangium
A sporangium is an enclosure in which spores are formed. It can be composed of a single cell or can be multicellular. All plants, fungi, and many other lineages form sporangia at some point in their life cycle...

.

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