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26 Giardina & al.: A catalogue of plants growing in Sicily

& Furnari 1970); Etna colata 1381 (Poli & Grillo 1972); According to Marchetti (2005, in litte-
ris) A. obovatum var. protobillotii could occur in Pantelleria; S. Tecla di Acireale!, Timpa di
Acireale!, basaltic riverbed of the Alcantara! – R.
29. Asplenium obovatum subsp. lanceolatum (Fiori) P. Silva in Agron. Lusit. 12: 24
(1951) [Bas. A. fontanum Bernh. var. lanceolatum Fiori, Nuova Fl. Anal. Ital. 1 (1): 26
(1923); A. billotii F. W. Schultz]
Tetraploid form sometimes hardly morphologically distinguishable from A. obovatum subsp.
obovatum (diploid). The high variability in sporal size makes difficult discrimination between
the two subspecies (Marchetti 2004). – Shady cliffs. – Perhaps in the past misidentified with A.
obovatum var. protobillotii but probably occurring in Sicily and not in the surrounding islands
(Marchetti 2004); Collected by us at Cuddia Gelfizer. A doubtful form generically reported for
Sicily by Zodda (1908: 114). – R.
30. Asplenium balearicum Shivas in Brit. Fern Gaz. 10: 75 (1969)
In the past misidentified with A. adiantum-nigrum Nardi (1983). Basaltic shady cliffs. ––
Common at Pantelleria: -Isola di Pantelleria, s. l., 1906 Sommier (FI), -Isola di Pantelleria
Cuddie Rosse/Gelkhamar, 17.03.1906 Sommier (FI), - Isola di Pantelleria, versante occidentale
tra Cuddie Rosse e Punta Fram, vallecola nord della regione dei Sesi, lave, 1.5.1981, E. Nardi
1096 (FI), -Isola di Pantelleria, versante orientale, Piano di Ghirlanda, 5.05.1981, Di Tommaso
(FI) (campioni in Nardi 1983); Pantelleria Khaggiar, 22/04/92, Giardina (herb. Giardina PAL);
Ustica (Raimondo & al. 1994); Cuddia di Gelfizer a Pantelleria, 18/06/02, Giardina & Rossello
(herb. Giardina PAL); Alicudi + Messina + Monticelli in PAL (Marchetti 2004, in litteris). – RR.

31. Asplenium petrarchae (Guérin) DC. in Lam. & DC., Fl. Franç. éd. 3, 5: 238 (1815)
[Bas. Polypodium petrarchae Guérin, Descr. Font. Vaucluse, éd. 1 : 124 (1804); A.
pilosum Guss.; incl. A. petrarchae var. nebrodicum Lojac.]
Cracks in walls and carbonate rocks, as well as in ground. – Palermo vetta di M. Cuccio nelle
rupi meridionali “una cum Cheilanthe odora” (Gussone 1845); Palermo sopra la catena della
Rocca (Alexander), M. Gallo (Tineo) (Gussone 1845: 885); Palermo (Ross 1899); Monte Gallo
lato Tommaso Natale, S. Martino (Lojacono 1909); M. Pellegrino: Rupi Nord (Raimondo ed.
1992); Palermo e Riserva Zingaro (Raimondo & al. 1994); Tonnarella dell’Uzzo (Raimondo &
al. 2004). – R.

* Asplenium trichomanes L., Sp. Pl.: 1080 (1753) subsp. trichomanes
The infraspecific variability was unknown to 19 th century botanists. This taxon is diploid,
microtherm and calcifugous: its distribution southwards stops at the Tuscan Apennine (Marchetti
2004). – Cracks in walls and rocks, preferably on siliceous substrata. – Reports by Lojacono
(1909) probably refer to th enext subspecies: Catalfano, Madonie, Val Demone, Busambra,
Nicolosi, Messina, M. Scuderi, Vulcano (Lojacono), Catania, S. Michele (Tineo) (Lojacono
1909).

32. Asplenium trichomanes subsp. quadrivalens D. E. Mey. in Ber. Deutsch. Bot. Ges. 74:
456 (1964)
Cracks in walls and carbonate rocks, also in ground. – Catalfano, Madonie, Val Demone,
Busambra, Nicolosi, Messina, M. Scuderi, Vulcano (Lojacono), Catania, S. Michele (Tineo)
(Lojacono 1909) – C.
33. Asplenium trichomanes subsp. pachyrachis (H. Christ) Lovis & Reichstein in