Phyllis viscosa is similar to Phyllis nobla of the same genus. However, it is smaller with narrow, sticky leaves and short, dense inflorescence.

Distribution
Tenerife: W, region, Los Silos, Cuevas Negras, Montes de Teno, Masca etc., cliffs in the lower zone up to  at Cumbre de Masca.

References

Flora of the Canary Islands
Endemic flora of the Canary Islands
Endemic flora of Macaronesia
Anthospermeae