Abstract
Asplenium petrarchae (Guérin) DC. is an aggregate species comprising a rare diploid and a more common tetraploid cytotype. A. trichomanes L. is also a complex of which two diploid, two tetraploid cytotypes as well as a rare hexaploid one were reported for Europe (see review in Reichstein 1981 and addenda 1982). These cytotypes are usually treated as subspecies. The first hybrid between members of the two complexes was collected by G. Lusina , 27 August 1935 in the Island of Lussino (= Losinj, now Yugoslavia, Archipelago Quarnero, Adriatic Sea), described as Asplenium helii Lusina (1943) and correctly interpreted as hybrids, glandulosum Loisel. (= A. petrarchae) x A. trichomanes, quoted by Pichi Sermolli et al. Ind. Fil. suppl. IV: 28 (1965). This name has obviously been overlooked by other workers and also in the review by Reichstein (1981).
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Copyright (c) 2025 Dr. H. Wilfried Bennert, Prof. Rodolfo E. G. Pichi Sermolli, Helga Rasbach, Dr. Kurt Rasbach, Prof. Tadeus Reichstein