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di Corso dei Mille, Ponte dell’Ammiraglio (Giardina 2002); Bagheria: Spiaggia di Solunto sotto
M. Catalfano (obs. in 2002)! – R.

524. Sisymbrium officinale (L.) Scop., Fl. Carniol. ed. 2, 2: 26 (1772) [Bas. Erysimum
officinale L., Sp. Pl.: 660 (1753)]
Antropophilous on debris and road sides. – Everywhere in the region. – CC.
525. Descurainia sophia (L.) Webb ex Prantl in Engl. & Prantl, Nat. Pflanzenfam. 3 (2):
192 (1891) [Bas. Sisymbrium sophia L., Sp. Pl.: 659 (1753)]
Uncultivated land, ruins, often near stables. – Palermo all’Oreto (Tineo) (Gussone 1834);
Palermo a S. Erasmo, Fiume Oreto (Lojacono 1889). – R.
526. Alliaria petiolata (M. Bieb.) Cavara & Grande in Bull. Orto Bot. Regia Univ. Napoli
3: 418 (1913) [Bas. Arabis petiolata M. Bieb., Fl. Taur.-Cauc. 2: 126 (1808); Alliaria
officinalis Andrz. ex M. Bieb.]
Nitrophilous woods. – Hilly and mountan ground with deciduous woods. – C.
527. Arabidopsis thaliana (L.) Heynh. in Holl & Heynh., Fl. Sachsen 1: 538 (1842) [Bas.
Arabis thaliana L., Sp. Pl.: 665 (1753); Stenophragma thalianum (L.) Čelak.]
Fields and uncultivated land. – Everywhere in the region. – CC.

528. Myagrum perfoliatum L., Sp. Pl.: 640 (1753)
A weed of cereal cultivation in sub-Mediterranean region. – Sicilia (Lojacono 1889); Trapani nei
campi (ex herb. PAL) (Ponzo 1900); Palermo a S. Martino delle Scale e Trapani (Raimondo &
al. 1994). – RR.
Isatis tinctoria L., Sp. Pl.: 670 (1753) subsp. tinctoria

529. Isatis tinctoria subsp. canescens (DC.) Arcang., Comp. Fl. Ital.: 64 (1882) [Bas. I.
canescens DC. in Lam. & DC., Fl. Franç. éd. 3, 5: 598 (1815); Isonymus: I. tinctoria
L. subsp. canescens (DC.) Malag., Sin. Fl. Ibér.: 401 (1975)]
Uncultivated acid ground. – Everywhere in the region. – CC.
530. Bunias erucago L., Sp. Pl.: 670 (1753)
Ruins, uncultivated grassy ground, hoed cultivations. – Everywhere in the region, scattered.
Nicolosi (Tornabene) (Gussone 1845: 846); Prevalentemente nella Sicilia orientale: Itala,
Fiumedinisi, Catania, Linguaglossa, Modica, Spaccaforno, Milazzo, Spadafora, Lipari, Ustica,
Saline, Pantelleria (Lojacono 1889); Cesarò Biviere (Raimondo & al. 2004). – C.
531. Erysimum cheiri (L.) Crantz, Class. Crucif. Emend.: 116 (1769) [Bas. Cheiranthus
cheiri L., Sp. Pl.: 661 (1753)]
Naturalized from ornamental cultivations on old walls, cliffs and limestone rocks. – Palermo,
Messina (Presl 1826); Castrogiovanni (Gussone 1844); Avola al M. Celidonio (Bianca) (Gussone
1845); Salina, Caronia (Lojacono 1889); Siracusa (Zodda 1929); Enna al Castello di Lombardia
(Di Martino 1994); Su edifici storici a Nicosia e a Petralia Sottana (Raimondo PAL). – NC.
* Erysimum crassistylum C. Presl, Fl. Sicul. 1: 77 (1826)
Reported by C. Presl (1826) in Messina facing Taormina, not further findings. Placed among the
“dubiae verosimiliter excludendae” in Lojacono (1889). To be excluded.