Selaginella hansenii
Encyclopedia
Selaginella hansenii is a species of spikemoss known by the common name Hansen's spikemoss. It is endemic to California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 where it can be found throughout the central part of the state, from the lowest reaches of the Cascade Range
Cascade Range
The Cascade Range is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, and the notable volcanoes known as the High Cascades...

 through the Central Coast Ranges and Sierra Nevada to the southern end of the Central Valley and the Tehachapis
Tehachapi Mountains
The Tehachapi Mountains , regionally also called The Tehachapis, are a mountain range in the Transverse Ranges system of California in the Western United States...

. It can be found in varied rocky habitat in hills and mountains. This lycophyte
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...

 forms loose or dense mats of spreading stems with small, forking branches. The lance-shaped or triangular leaves are up to 5 or 6 millimeters long including the soft, white bristles at the tips. The leaves are green, often tinged with red, or totally red. The strobili
Strobilus
A strobilus is a structure present on many land plant species consisting of sporangia-bearing structures densely aggregated along a stem. Strobili are often called cones, but many botanists restrict the use of the term cone to the woody seed strobili of conifers...

containing the reproductive structures are under a centimeter long.

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