# Elongate Rock Moss (*Racomitrium elongatum*)

Elongate Rock Moss is a soft, green plant that grows on rocks and soil. It helps keep the ground healthy and is a cozy home for tiny creatures.

- **Category:** [Plants](https://www.snappit.app/explore/categories/plant)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Habitat:** Mountain regions

![Elongate Rock Moss](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Racomitrium_elongatum.jpeg&width=800)

Photo: Kristian Peters -- Fabelfroh 15:52, 28 September 2007 (UTC), CC BY-SA 3.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Racomitrium_elongatum.jpeg)

## Appearance

The Elongate Rock Moss has slender, erect stems forming dense, cushion-like mats. Its olive-green to brownish-green leaves appear spiky when dry, creating a rugged texture. It often forms extensive, shaggy carpets over rocks.

## Taxonomy

- **Kingdom:** Plantae
- **Phylum:** Bryophyta
- **Class:** Bryopsida
- **Order:** Grimmiales
- **Family:** Grimmiaceae
- **Genus:** Niphotrichum

## Interesting facts

- It drinks water by absorbing it directly through its leaves, not roots!
- Mosses are ancient plants, older than any dinosaur that ever lived!
- Scientists have even studied similar mosses growing in outer space!
- This moss can completely dry out and then magically rehydrate itself!

## Special abilities

- **Drought Shield:** Elongate Rock Moss can curl its leaves tight when dry, protecting delicate parts from dehydration until rain returns.
- **Rock Hugger:** Elongate Rock Moss has special root-like structures called rhizoids that firmly anchor it to bare rocks.
- **Erosion Fighter:** This moss forms dense carpets that slow down water runoff, helping prevent soil erosion on steep slopes.

## Measurements & details

- **Height:** 1-5 cm
- **Spread:** 5-20 cm
- **Edible:** No
- **Toxicity:** None
- **Lifecycle:** Perennial

## Ecological connections

- **Eaten by:** [Leopard Slug](https://www.snappit.app/explore/leopard-slug) (*Limax maximus*) — Slugs sometimes graze on mosses.
- **Shelter:** Snow flea (*Hypogastrura nivicola*) — Small springtails often hide within moss cushions.
- **Symbiotic with:** Nostoc Cyanobacterium (*Nostoc commune*) — Mosses can host nitrogen-fixing cyanobacteria for nutrients.

## Traits

- [Nonvascular](https://www.snappit.app/explore/traits/nonvascular): This trait characterizes plants lacking specialized vascular tissues (xylem and phloem) for transporting water and nutrients.
- [Shade Tolerant](https://www.snappit.app/explore/traits/shade-tolerant): Shade tolerant plants are adapted to grow and thrive in areas with low light levels, requiring less direct sunlight.
- [Cold Hardy](https://www.snappit.app/explore/traits/cold-hardy): Cold hardy plants are able to withstand low temperatures and freezing conditions without significant damage.
- [Symbiotic](https://www.snappit.app/explore/traits/symbiotic): Describes a relationship between two different species where they live in close association, often benefiting one or both.
- [Mountain](https://www.snappit.app/explore/traits/mountain): This habitat trait identifies species found in mountainous regions, characterized by high elevation, steep slopes, and varying climate zones.
- [Decomposer](https://www.snappit.app/explore/traits/decomposer): Describes organisms that break down dead organic material, recycling nutrients back into the ecosystem.
- [Keystone Species](https://www.snappit.app/explore/traits/keystone-species): Describes a species whose presence and role have a disproportionately large effect on its environment.

## Collections

- [Plants](https://www.snappit.app/explore/collections/plants)

## Safety

**Danger:** 1/5 · Very low

It's safe to touch, but be gentle and don't pull it out of its home.

## Frequently Asked Questions

### How to identify Elongate Rock Moss?

Compare growth form, branching, tiny leaves and any spore capsules. Mosses, liverworts and lichens can share a spot but are very different organisms. Moss Identifier: upload a photo and compare the visible details.

### How tall is Elongate Rock Moss?

1-5 cm

### How wide does Elongate Rock Moss spread?

5-20 cm

### Is Elongate Rock Moss edible?

No

### Is Elongate Rock Moss toxic?

None

### What is Elongate Rock Moss's lifecycle?

Perennial

### Where is Elongate Rock Moss usually found?

Mountain regions

## More Plants

- [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*)
- [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*)
- [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*)
- [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*)

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Source: [Elongate Rock Moss: Facts & Places to See — Snappit](https://www.snappit.app/explore/elongate-rock-moss)