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L. Peruzzi, L. Scuderi & FM Raimondo Distribution of the Genus Gagea (Liliaceae)

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L. Peruzzi, L. Scuderi & FM Raimondo Distribution of the Genus Gagea (Liliaceae) L. Peruzzi, L. Scuderi & F. M. Raimondo Distribution of the genus Gagea (Liliaceae) in Sicily Abstract Peruzzi, L., Scuderi L. & Raimondo F.M.: Distribution of the genus Gagea (Liliaceae) in Sicily. — Fl. Medit. 19: 25-47. 2009. — ISSN 1120-4052. An updated geographical distribution of the genus Gagea in Sicily with a grid map for each taxon is given. This study is based on literature, herbarium and field investigations. The exam- ined species are G. bohemica (Zauschn.) Schult. & Schult. f., G. chrysantha Schult. & Schult. f. sensu stricto, G. dubia A. Terracc., G. foliosa (C. Presl) Schult. & Schult. f., G. fragifera (Vill.) E. Bayer & G. López González, G. granatelli (Parl.) Parl., G. lacaitae A. Terracc., G. lojaconoi Peruzzi, G. sicula Lojac., G. trinervia (Viv.) Greuter. The occurrence in Sicily of the phytogeo- graphically interesting G. mauritanica Durieu is here confirmed in three localities. Besides, the actual presence in Sicily of historically occurring G. lutea (L.) Ker Gawl., G. pratensis (Pers.) Dumort. and G. villosa (M. Bieb.) Sweet is not confirmed. Finally, an analytical key for the identification of the studied species is presented. Key words: Gagea, Sicily, Taxonomy. Introduction In the framework of a critical revision of Gagea phytogeography at Italian national level (Peruzzi 2004; Peruzzi & Gargano 2005; Peruzzi 2005; Peruzzi & Bartolucci 2006; Peruzzi & Caparelli 2007; Carta & al. 2007; Peruzzi & al. 2008; Bartolucci & Peruzzi 2009; Peruzzi & al. 2009), an update and verification on the distribution of the Sicilian species is here presented. Materials and Methods For the present study both literature and herbarium (CAT, CLU, FI, G, GE, K, NAP, PAL, PI, RO, Herb. Minà, Herb. Tison) data were used, as well as field researches during years 2004-2009. An UTM ED 50 100 x 100 Km grid map was used for mapping the data, together with an arbitrary secondary grid 10 x 10 Km. The stands were distinguished as not confirmed (+), confirmed (•), new (*). The taxa are arranged in alphabetical order, according to their current accepted name. Synonyms used at regional level were also reported. 26 Peruzzi & al.: Distribution of the genus Gagea (Liliaceae) in Sicily Results & Discussion Gagea bohemica (Zauschn.) Schult. & Schult. f. (Fig. 1) = G. bohemica subsp. saxatilis (Mert. & Koch) Asch. & Graebn. = G. busambarensis (Tineo) Parl. = G. minaae Lojac. = G. nebrodensis (Tod.) Nym. = G. saxatilis subsp. australis var. sicula A. Terracc. This species is rather rare and elusive, and occurs all across the Mediterranean Basin and central-western Europe (Rix & Woods 1981). In Sicily, G. bohemica grows on rocky sub- strate (calcareous, siliceous or lavic), at 800-1975 m a.s.l. and flowers from March to May. Several taxa described for the region (i.e. G. busambarensis, G. minaae, G. nebrodensis), do not have systematic value (Peruzzi & Tison 2004, 2005; Peterson & al. 2009a). Sicilian plants are known to possess two cytoypes: 2n = 4x = 48 and 2n = 6x = 72 (Peruzzi 2008). Literature data – “E’ stata raccolta dal Sig. Minà nelle pietre calcari delle montagne delle Madonie a un altezza di circa 6-mila piedi al così detto Pizzo delle Case“ (Parlatore 1845 sub G. saxatilis); “in luoghi erbosi sassosi montuosi a Busambra, sotto l’Agugghia, fiorito nel mese di Marzo“ (Parlatore 1845 sub G. busambarensis); “monti delle Madonie in Sicilia al Pizzo delle Case a circa 2000 metri sul livello del mare dove è stata trovata dall’amico Minà“ (Parlatore 1858 sub G. saxati- lis); “il Prof. Tineo ha trovato nel mese di Marzo una sola pianta di questa specie in luoghi erbosi e pietrosi del Monte Busambra, sotto l’Agugghia, in Sicilia“ (Parlatore 1858 sub G. busambarensis); “Monte Busambra in Sicilia“ (Arcangeli 1882 sub G. busambarensis); “in locis demissioribus Nebrodum, alle Zotte di Calacioni, Lojac! sotto la Carbonara, Lojac!“ (Lojacono 1908 sub G. nebro- densis var. elatior Lojac.); “sulle più alte volte delle Nebrodi, Pizzo Carbonara (1975 m) Lojac! Pizzo, Palermo, Lojac! (9 Maggio 1904), Pizzo delle Case, Tod! Minà! Maggio“ (Lojacono 1908 sub G. nebrodensis); “sulla più alta vetta di Busambra, nei pressi del segnale trigonometrico (“Agugghia”) e propriamente sui ciglioni che strapiombano nella Ciacca di Mezzogiorno nell’hu- mus soffice degli interstizii del calcare a 1600 m. (loc. unicus atque classicus), Tin! Lojac!“ (Lojacono 1908 sub G. busambarensis); “Madonie sui luoghi più elevati fra le rocce calcaree erbo- se, Pizzo delle Case Minà, Pal! Aprile“ (Lojacono 1908 sub G. minaae Lojac.); “Sicilia a Busambra“ (Fiori 1923 sub G. bohemica var. busambarensis); “Sicilia alle Madonie“ (Fiori 1923 sub G. bohe- mica var. nebrodensis); “Rocca Busambra (Palermo), presso il segnale trigonometrico, 11-4-1978“ (Marcenò & Colombo 1978); “Busambra, sotto l’Agughia, Tineo; Madonie al Pizzo della Casa, Todaro“ (Rix & Woods 1981); “Monti Sicani: Cozzo Catera“ (Marcenò & al. 1985); “Madonie a Pizzo Carbonara, Rocca Busambra, Santuario di S. Stefano di Quisquina, M. Carcaci“ (Raimondo & al. 1994); “Monti Sicani: Santuario di S. Stefano Quisquina, Serra della Moneta di S. Stefano, Monte Carcaci di Castronovo“ (Gianguzzi & al. 1995); “Monte Gallo, cratere eccentrico dell’Etna, m 1700 s.l.m., territorio di Adrano, 6 Apr 1995“ (Giardina 2000 sub G. busambarensis). Specimina visa – in pascuis elatioribus montosis – Busambra, s.d., Todaro (PI); Madonie, s.d., Minà (NAP); Madonie, s.d., s.c. (NAP); Madonie, s.d., Todaro (PAL); Madonie, s.d., Minà (PAL); Busambra, s.d., Tineo (PAL, lectotypus of G. busambarensis (Tineo) Parl.); Pizzo delle Case, s.d., Minà (PAL); Pizzo delle Case, V, Todaro (PAL, lectotypus of G. nebrodensis (Tod.) Nym.); Madonie al Piano di Ferro, IV/1874, Reina (FI); In pascuis elatioribus montosis – Busambra, s.d., Todaro (FI); Sicilia, 1847, Parlatore (K, sub G. nebrodensis); Monte Spagnolo, 18/IV/1900, Baccarini (CAT, n. 1970); coste pietrose a metà monte, andando a Busambra, versante sud, 24/IV/1904, A. Terracciano (NAP); Neviere, s.d., A. Terracciano (NAP, lectotypus of G. saxatilis subsp. australis A. Terracc.); sotto la cima del Monte Busambra, entro i sassi cingenti un praticello, 24/IV/1904, A. Terracciano Flora Mediterranea 19 — 2009 27 Fig. 1. Distribution in Sicily of Gagea bohemica. (NAP); Pizzo Palermo e Pizzo Carbonara, 9/IV/1904, Lojacono (PAL); in pascuis elatioribus mon- tosis – Busambra, s.d., Todaro (PAL); Al Pizzo delle Case, 10/V/1842, Parlatore (FI); In lemma jugo montis Busambrae, 24/IV/1904, A. Terracciano (FI); Etna a Randazzo, rarissima, 2/III/1905, Fiori (FI); Monte Gallo, cratere eccentrico Adrano (prov. di Catania), 1700 m s.l.m., crepe humose entro acciottolato naturale in vasto brecciaio eruttivo, 6/IV/1995, Giardina (FI); SI PA, Ficuzza: arête som- mitale de la Rocca Busambra 1600 m, lappiaz calcaire, ab. 2, 11/IV/1996, Tison (Herb. Tison); SI PA, Collesano: versant nord du col de Piano Battaglia au carrefour de la route de Polizzi 1450-1500 m, pelouses karstiques de pente, ab. 2, 24/III/2003, Tison (Herb. Tison); SI PA, Piana degli Albanesi: sommet de la Pizzuta 1300 m, sporadique sur vires rocheuses moussues, ab. 2, 21/III/2003, Tison (Herb. Tison); Sicilia, Madonie: nei pressi del bivio tra Piano Zucchi, Piano Battaglia e Polizzi Generosa, versante orientale M.te dei Cervi, 1500 m, substrato calcareo, pascoli rocciosi, 3/IV/2006, L. Peruzzi, D. Gargano, G. Aquaro, K. F. Caparelli, C. Stefano (CLU, n. 19770); Sicilia: Nebrodi, nei pressi di Floresta, lungo un sentiero, 1300 m, radure in rimboschimento a Pinus, rocce, substrato sili- ceo, 2/IV/2006, L. Peruzzi, D. Gargano, G. Aquaro, K. F. Caparelli, C. Stefano (CLU, n. 19775). Living plants – Rocca Busambra, Sicilia, III/2003, Tison (cult. Hort. Bot. Univ. Pisa n. 475/2008); Piano Battaglia, Madonie (Sicilia), III/2003, Tison (temp. cult. Hort. Bot. Univ. Sicilia n. 119-s); Sicilia, Madonie: nei pressi del bivio tra Piano Zucchi, Piano Battaglia e Polizzi Generosa, versante orientale M.te dei Cervi, pascoli rocciosi su calcare. 1500 m, 3/IV/2006, L. Peruzzi, D. Gargano, G. Aquaro, K. F. Caparelli, C. Stefano (cult. Hort. Bot. Univ. Pisa n. 474/2007). 28 Peruzzi & al.: Distribution of the genus Gagea (Liliaceae) in Sicily Gagea chrysantha Schult. & Schult. f. s.s. (Fig. 2) This species belongs to a highly polymorphic Mediterranean group, together with several other taxa (i.e. in Sicily: G. sicula Lojac., G. lojaconoi Peruzzi). The three units occurring in the region are morphologically distinguishable and collectively monophyletic (Peruzzi & al. 2008a). According to the same authors, it is still not clear which taxonomic rank could be more appropriate to assign them. This matter is still under study. However, G. chrysantha s.s. is endemic of Sicily (Peruzzi & Tison 2007). In the region, this unit grows at about 600 m a.s.l. and flowers from March to April. Plants from Ficuzza (locus classi- cus) are triploid with con 2n = 36 chromosomes (Peruzzi 2008). Literature data – “ex Sicilia in montibus di Busambra a Prof. Janio“ (Bertoloni 1839 sub Ornithogalum chrysanthum); “in apricis montosis Pizzuta (Jan). Aprili, Majo“ (Gussone 1842 sub Ornithogalum chrysanthum); “nei luoghi boschivi dei monti di Sicilia dove nasce nel Monte Pizzuta, e nel Bosco del Cappelliere alla Ficuzza“ (Parlatore 1858); “sul Monte Pigento e alla Ficuzza in Sicilia“ (Arcangeli 1882); “Pascui montani boschivi aperti: Ficuzza, Lojac! Bosco del Cappelliere Lojac! Pizzuta, Herb. Pan! Aprile“ (Lojacono 1908); “Sicilia nei monti del Palermitano (Ficuzza, M. Cucco, Busambra e Pizzuta)“ (Fiori 1923 sub G. foliosa var. chrysantha); “Ficuzza, M. “Cuoco”, Busambra, Pizzuta e forse Madonie“ (Pignatti 1982); “Palermitano a Ficuzza, Alpe Cucco, Bosco del Cappelliere, Neviere di Busambra“ (Raimondo & al. 1994). Specimina visa – Ficuzza, 1829, Jan (G, lectotypus of Gagea chrysantha); Erb. Orto dei Semplici, XII/1881, Jan (FI); Ficuzza, s.d., Todaro (PAL); in apricis montosis Ficuzza, IV, Todaro 1843 (RO); ibidem (RO); ibidem (PI); ibidem (PI, Herb. Guadagno); Ficuzza, IV, Todaro (PAL); in nemoribus montosis Ficuzza, s.d., Todaro (RO); Ficuzza, alle neviere, IV/1893, A.
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