A. t. ssp. quadrivalens × ssp. pachyrachis n/a n/a n/a Class: Pteridopsida Family: Aspleniaceae Status R – extremely rare Description Asplenium trichomanes subsp. pachyrachis can hybridise with subsp. quadrivalens, forming a vigorous plant with a more upright habit than subsp. pachyrachis and distinctly intermediate between the parents. It is known as . A rapid investigation … Continue reading Asplenium trichomanes nothosubsp. staufferi