 As a further example, in the Channel Islands (Santa Cruz Island), "N. siphonoloba" is suspected to hybridize with another sekikaic-acid species "Niebla fimbriata" as seen by their intermediates.The morphological variation in "Niebla marinii", "N. suffnessii" and "N. siphonoloba" are just a few examples of the broad spectrum of morphological variation that can be found in each species, referred as morpho-syndrome variation, in contrast to chemo-syndromes recognized in the related genus "Ramalina".Morpho-syndrome variation generally has not been recognized in lichens, because it would seem that environmentally induced variation is considered a more likely explanation.