| Family | ROSACEAE |
| Genus species | Dryas ajanensis Juz. |
| Bibliography | Izv. Glavn. Bot. Sada S.S.S.R. 28: 318 (1929) |
| Native Range | e. Siberia to Subarctic America, Japan, Korea |
| Primary Biome | Subalpine |
| Habitat | rocky slopes |
| Description | leaves elliptic, slightly cordate or truncate, rounded, incised crenate-dentate towards apex, glabrous, abaxially white tomentose, flowers 15-25mm, petals obovate |
| Size | 2-9cm |
| Color | white |
| Bloom | summer |
| Ca | |
| Type | subshrub |
| Cultivation | rock crevices with favourable water regime, eastern slopes alpine house, poor, drained soil, shading in summer |
| Propagation | seed in winter, germ. 1-3 months, 16-21°C cuttings in late summer; layering in early spring |
| Synonyms | Dryas ajanensis var. incanescens (Juz.) Kozhevn. Dryas ajanensis ssp. ochotensis Jurtzev Dryas ajanensis var. viridis Jurtzev Dryas incanescens Juz. Dryas nervosa Juz. Dryas octopetala ssp. ajanensis (Juz.) Hultén Dryas octopetala var. ajanensis (Juz.) Hultén Dryas octopetala f. asiatica Nakai Dryas octopetala var. asiatica (Nakai) Nakai Dryas octopetala var. incanescens (Kozhevn.) Kozhevn. Dryas octopetala ssp. nervosa (Juz.) Hultén Dryas octopetala ssp. tschonoskii (Juz.) Hultén Dryas tschonoskii Juz. |
| Territory | 3 Asia-Temperate 30 Siberia (YAK Yakutskiya) 31 Russian Far East (KAM Kamchatka, KHA Khabarovsk, KUR Kuril Is., MAG Magadan, PRM Primorye, SAK Sakhalin) 38 Eastern Asia (JAP Japan, KOR Korea) 7 Northern America 70 Subarctic America (ASK Alaska, NWT Northwest Territories, YUK Yukon) |