| Family | RUBIACEAE |
| Genus species | Thliphthisa rigida (Sm.) P.Caputo & Del Guacchio |
| Bibliography | Pl. Biosystems 154: 777 (2020) |
| Native Range | Crete |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Description | branchlets sparsely hirsute, rigid, ascendent, leaves in whorls of 6, oblong-elliptic to linear, inflorescence lax, flowers sessile, 2-4mm long, glabrous |
| Size | 7-25cm |
| Color | red, yellow |
| Bloom | summer |
| Ca | |
| Type | subshrub |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, barely covered, germ. 1-3 months, 10-16°C cuttings in late summer |
| Synonyms | Asperula kritsensis Coustur. & Gand. Asperula platygona Gand. Asperula rigida Sm. Crucianella rigida (Sm.) Tausch |
| Territory | 1 Europe 13 Southeastern Europe (KRI Kriti) |