About Gesnouinia arborea (L.fil.) Gaudich.
Gesnouinia arborea (L.fil.) Gaudich. has entire, acuminate, 3-nerved, pubescent leaves, and lacks stipules. This species is monoecious; each involucre holds one female flower and two male flowers. The involucres are clustered into a dense panicle. Male flowers have a 4-partite calyx and 4 stamens. Female flowers have an included ovary and short styles. The seeds, which are achenes, are enclosed by the calyx. This plant is distributed across the Canary Islands. In Tenerife, it occurs in the laurel forest zone at Sierra Anaga, Las Mercedes, Vueltas de Taganana at 600–800 m, as well as at Icod el Alto and Barranco del Agua near Los Silos, and it is rare there. In La Palma, it is found in laurel woods at Los Tiles, Cubo de la Galga, Cumbre Nueva and Barlovento. In La Gomera, it grows at El Cedro forest, Roque de Agando and Chorros de Epina at 600–1000 m. In El Hierro, it occurs in the forests of El Golfo. In Gran Canaria, it is found at Los Tiles de Moya, Barranco de la Virgen and Osorio, and it is rare there.
