The Shimane Prefecture Red Data Book lists about 360 different vascular plant species, including ferns and mosses. Here's what I've seen so far:
The thumbnail images below are arranged alphabetically throughout the pages.

Explanatory notes:  CR+EN：Critically Endangered + Endangered　VU：Vulnerable　NT：Near Threatened　DD: Data Deficient

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Pogonia minor / Yamatokisou VU	Polygonum tenuicaule / Harutoranoo VU	Potentilla nipponica / Hirohanokawarasaiko  CR+EN	Prunus sargentii / Ooyamazakura NT
Pseudolysimachion ogurae / San'intoranoo  CR+EN	Pseudolysimachion ogurare / Akabana-San'intoranoo CR+EN	Pseudolysimachion schmidtianum ssp. senanense Miyamakuwagata  CR+EN	Pseudopyxis depressa / Inamorisou NT
Pseudostellaria heterantha / Wachigaisou VU	Psilotum nudum / Matsubaran CR+EN	Pulsatilla cernua / Okinagusa VU	Pyrrosia linearifolia / Birohdoshida VU
Pyrrosia tricuspis / Iwaomodaka CR+EN	Ranunculus kazusensis / Himebaikamo CR+EN	Ranunculus nipponicus var. submersus / Baikamo CR+EN	Rhododendron japonicum / Rengetsutsuji NT
Rhododendron japonoheptamerum var. hondoense / Honshakunage VU	Rhodotypos scandens / Shiroyamabuki VU	Ribes ambiguum / Yashabishaku	Ricciocarpos natans / Ichouugoke NT
Rosa rugosa / Hamanasu CR+EN	Rubus yoshinoi / Kibinawashiroichigo VU	Sagittaria aginashi / Aginashi CR+EN	Salomonia oblongifolia / Hinanokanzashi CR+EN
Samolus parviflorus / Haihamabossu CR+EN	Sarcochilus japonicus / Kayaran CR+EN	Saururus chinensis / Hangeshou CR+EN	Saussurea maximowiczii / Miyakoazami DD
Saussurea nipponica / Oodaitouhiren CR+EN	Scrophularia buergeriana / Gomanohagusa VU	Sedirea japonicum / Nagoran CR+EN	Sedum erubescens / Tsumerenge NT
Sedum rupifragum / Oomenomannengusa NT	Hylotelephium verticillatum / Mitsubabenkeisou NT	Solanum japonense / Yamahoroshi CR+EN	Sparganium fallax / Yamatomikuri NT
Sparganium stenophyllum / Himemikuri VU	Spiraea japonica / Shimotsuke NT	Swertia pseudochinensis / Murasakisenburi CR+EN	Swertia tosaensis / Inusenburi CR+EN