Phyllis nobla is a small, glabrous or pubescent subshrub in the family Rubiaceae.

Flowers are whitish, small in lax terminal and axillary panicles.

[1] Cliffs, rocky banks and levada walls from sea level to 1800 m; widespread in Madeira but rarer in Porto Santo where it occurs on the northern coast near Fonte d'Areia and on Pico do Facho and Ilheu de Baiyo; also on Deserta Grande Island and the eastern side of Bugio.

locally very common, 600–1200 m; La Palma: Cumbre Nueva, El Paso, Barlovento etc.

; La Gomera: Monte del Cedro, Arure, Chorros de Epina; El Hierro: Forest regions of El Golfo and Valverde (Ventejís); Gran Canaria: Pinar de Tamadaba, pine forest cliffs, 1000 m, Presa de los Pérez, rare.