(Brachythecium rivulare )

This moss ranges in color from yellowish-green to caramel brown and is slightly shiny. It grows in colonies on rock faces made wet by water flow, making puffy moss balls on rocks in the stream.


(Plagiomnium vesicatum )

This grows in colonies around riverbanks and waterfalls, even in the water. When looking at with a magnifier, it almost gives the impression of “leaves.”


(Fissidens grandifrons )

The name means thin ho-o-goke (a Chinese phoenix moss), it grows in wet places, such as rapid streams and cliffs where water drips constantly. There is a colony at “Tamadare Fall.”


(Rhynchostegium riparioides )

Prefers to grow on the waterside on rocks and fallen trees in the stream, rocks on the riverside splashed with water, and stonewalls and steep cliffs containing moving water.


Shrimp moss
(Bryoxiphium norvegicum
  subsp. japonicum)

This plant is often seen covering huge rocks in Oirase, and has the appearance of animal fur.


Mouse-tail Moss
(Myuroclada maximoviczii)

Named after its characteristic, easy-to-remember appearance resembling “a mouse tail.”


(Thamnobryum subseriatum)

As its name Otora-no-o (Big tiger’s tail) suggests, this big moss leaves a vigorous impression. The stem rises and branches off dendritically on a large scale.


(Fissidens nobilis)

The appearance of slightly hard, large leaves is aristocratic and named after a legendary bird called Ho-o (a Chinese phoenix), since it reminds one of the bird’s feathers.


Fern Moss
(Thuidium kanedae )

This fern moss is named after an epiphytic fern on trees, “Hare's-foot fern (Davallia mariesii),” since it has a similar shape, as well as a delicate design.


(Bryonoguchia molkenboeri )

It makes colonies on decaying fallen trees and rocks, etc. It has a puffy texture reflecting the three-dimensional attachment of the branches.

Kotsubo goke moss
(Plagiomnium acutum )

Grows on various surfaces such as on grounds, rocks, and fallen trees. The male plant has a flower-shaped design.


(Taxiphyllum aomoriense )

This flat moss was first recorded in Aomori. The leaves resemble a cord called Sanada plaited cloth, and can be used to make a distinctively shiny mat.


(Hypnum erectiusculum )

This moss resembles Aomori-sanada-goke (Taxiphyllum aomoriense) but appears on high rocks and rock walls. The leaf top faces downward and curves gently like a sickle.


(Schistidium strictum )

Growing in colonies on rocks and concrete walls along streets that tend to be dry, it is named after giboshi (an ornamental railing top in Japan) since its red sporophytes resemble this design.


O-giboshi-goke modoki
(Anomodon giraldii )

One of the representative mosses growing on tree trunks. It forms a colony to cover tree trunks.


(Anomodon rugelii )

Along with Ogiboshi-goke-modoki (Anomodon-giraldii), this is one of Oirase’s representative epiphytic mosses growing on tree trunks (Musci class). It creates large colonies, especially beneath tree trunks.


(Neckera yezoana)

A species of epiphytic moss on tree trunks, it grows well on the smaller, upper side of a trunk and stands out with its feature of leaves and stems curled backward.


(Homalia trichomanoides
  var. japonica)

Growing mainly in the lower part of tree trunks, it has a shiny, smooth, and dry texture. Also regarded as a variety of Nagae-tachi-hira-goke (Homalia trichomanoides var. trichomanoides).


(Dicranum viride
  var. hakkodense)

In its name, kamoji means wig. When touching this plant, the leaf top snaps off and sticks to fingertips. This plays a role as a gemma and grows in colonies on tree trunks and rocks.


Karafuto (Sakhalin)
(Ulota crispa)

Featuring golden hair on capsule hats, the leaves of the similar Kodama-goke (Orthotrichum consobrinum) do not curl when dried, whereas this one has leaves that crimp.

(Orthotrichum consobrinum )

This epiphytic moss is also called Tachi-hida-goke and grows on tree branches. The pretty capsule is a bell-shaped hat with vertical folds.


(Hypnum lindbergii )

Haigoke (creeping moss) is shiny and builds large colonies on wet rocks and fallen trees along the stream.


(Hypnum fujiyamae )

Growing in thick downy colonies, mainly on fallen trees, it is quite large for a creeping moss. Water absorbing power as well as water capacity are high.


Kusa goke moss
(Callicladium haldanianum )

Forms mat-shaped colonies on handrails along wooden footpaths and fallen trees. It often produces sporophytes.

(Hylocomiastrum pyrenaicum )

This makes big colonies on rocks and fallen trees. It is named after the appearance of the reddish-brown thick stem with imbricate leaves emerging from it, reminding one of a “dragon’s tail.”


Springy turf-moss
(Rhytidiadelphus japonicus )


Characterized by a soft-textured, reddish stem, and a pointed leaf top that bends backward, it is found on fallen trees and rocks. When dried, the leaves remain open.


(Trachycystis flagellaris )

There is no other moss like this one featuring lots of long, thin gemmas growing at the top of stems as if it were raising antennas.


(Fauriella tenuis )

A fiber-like moss that thickly covers fallen trees and decayed trunks, it has a different appearance when seen through magnifier.

Apple Moss
(Bartramia pomiformis )

Produces green-apple-like sporophytes in early spring, which ripen to look something like Medama Oyaji (Eyeball Father) from the Japanese cartoon.


(Dicranum nipponense )


Called Shippo-goke (tail-moss), since the long, and bundles of leaves look like a tail. Brown rhizoids are attached to the stem.


(Dicranoloma cylindrothecium )

The form as a whole resembles the genus Dicranum, but this one has a much thinner and longer leaf form. When dried, the appearance almost never changes.


(Diphyseium fulvifolium )

This moss grows on the ground. In Japanese, it is called “Wild boar neck moss,” a comparison of the short-stalked capsule connected to leaves, as if it were buried under them, to a neck of a wild boar.

(Pogonatum japonicum )

Large-sized moss that crimps strongly when dried. Thick, white hair grows on the columnar capsule, which makes it look like it is wearing a hat.


(Pogonatum contortum )


While Seitaka-sugi-goke (Pogonatum japonicum) stands erect, this variety is known for its sprawling growth that runs diagonally and downwards.


(Atrichum undulatum )

When observing a leaf with a magnifier, you can easily see the gentle wave profiles (waveform strings) of it, which makes it popular among beginning observers.


Tree moss
(Climacium dendroides )

The sturdy-looking main stem stands erect, looking like a miniature palm tree. Written as Furo-kusa (Ageless grass), it gives the impression of grass rather than moss.

Snake liverwort
(Conocephalum conicum )

Reminds one of a snake skin. When touched, it gives off a distinctive scent.

(Plagiochila ovalifolia )


Oirase’s representative cormus moss has leaves that emerge regularly from a stem. There are also thin, small serrations on the leaf margin.


(Cavicularia densa )

A thin, leaf-like moss that forks in two, it belongs to the Blasiaceae Family. Cohabitating Nostoc, blue-green algae (Cyanobacteria) can be seen as small black spots.


(Porella grandiloba )

One of Oirase’s representative cormus mosses. These like to adhere to the underside of rocks and tree trunks, creating a colony.