Miscellaneous Notes About Some Taxa of the Italian Flora

Webbia 67(1): 37-46. 2012

Miscellaneous notes about some taxa of the Italian ﬂ ora

PIER VIRGILIO ARRIGONI

Via Gordigiani 44 50127 - Firenze

Accepted 4 April 2012

Note miscellanee su alcuni taxa della fl ora italiana — Le ricerche condotte negli ultimi anni su alcuni gruppi tassonomici della fl ora italiana hanno permesso di rilevare alcune novità fl oristiche e di chiarire la posizione tassonomica e la presenza di alcuni taxa su cui di seguito viene riferito. Vengono inoltre descritte due nuove specie per la Flora Italiana: Polygala padulae Arrigoni e Taraxacum vallis-nibulae Arrigoni.

Key words: distribution, Italian Flora, Polygala, Taraxacum, taxonomy.

Polygala padulae Arrigoni, spec. nov DESCRIPTION - Perennial, caespitose, evergreen herb; stems numerous 10-20 cm, glabrous or sparsely DIAGNOSIS - Herba perennis, caespitosa, sempervi- ciliate. Leaves lanceolate, alternate, sessile, 0,8-1,5 rens, caulibus plurimis 10-20 cm altis, glabris vel sparse cm, single-veined, glabrous on both sides but with ciliolatis. Folia lanceolata, alterna, sessilia, 0,8-1,5 cm short, curved hairs fringing the margin. Infl orescence longa, uninervia, in utraque pagina glabra, marginibus terminal, with 5-20 fl owers with short pedicels (1,5-2 minute ciliatis ciliis recurvis. Infl orescentiae terminales mm) and 1-3 small caducous papery bracteoles at the 5-20-fl orae, fl oribus breviter pedunculatis, peduncu- base. Flowers with 3 sub-equal basal bracts, about 3 lis 1,5-2 mm longis, 1(3) parvulas bracteolas basales mm, linear, with a thin scarious border. Wings green- scariosas caducasque ferentibus. Flos 3 bracteis basalibus ish turning pink towards the margins, oval, 7,5-8 subaequalibus instructus, circa 3 mm longis, linearibus, x 3,5-4 mm. Petals pink, one two-lobed at the tip, subtili margine scarioso praeditis. Alae viridulae margine about 7 mm, the others shorter, digitated, bearing a plus minusve roseae, ovales, plerumque 7,5-8 × 3,5-4 fi mbriate crest. Capsule two-seeded, sub-ovoid, 5x4 mm. Petala rosea, alterum bilobum circa 7 mm longum, mm, emarginated, with two-winged and scarious lat- alterum brevius digitatum laciniis plurimis fi liformibus. eral margins. Capsula subovoidea, 5 × 4 mm, disperma, apice emar- ginata, bialata marginibus lateralibus scariosis. ICONOGRAPHY - Fig. 1, drawn on material from the “locus classicus” (Maury delineavit). TYPUS - Holotypus in FI: “Iglesias: circonval- lazione ovest, a monte di Iglesias, Arrigoni et Ferretti, CHOROLOGY - Endemic to Sardegna. Vicariant of 13.V.2005”. P. sardoa on siliceous soils.

ETYMOLOGY - Michaelem Marcellum Padulam, Specimina visa - Belvì in sylvis, Martelli 21.V.1894, egregium botanices silvariae professorem, species com- sub P. vulgaris L. (FI) - Vette del Limbara, Martelli memorat. 4-6.VI.1895, sub P. vulgaris L. (FI) - Presso Uta, Mar- 38 Pier Virgilio Arrigoni

Fig. 1 – Polygala padulae Arrigoni. Plant (x 0,98), fl ower, fruit and leaf detail (x 9,8). (A. Maury delineavit) Miscellaneous notes about some taxa of the Italian fl ora 39 telli 25.III.1898, sub P. vulgaris L. (FI) - Montagne di inner side of the involucral bracts. Leaves irregularly Alà dei sardi, Martelli 13-.14.VI.1899, sub P. vulgaris lobed-dentate, petiole 5-6 cm, with 3-4 triangular, L. (FI) - Arizzo, Bonomi s.d. (da Nicotra VII.1912), patent major lobes, having back and lower margin sub P. vulgaris L. (FI) - Altopiano di Badde Urbana, more or less dentate. Space between lobes 0,5-1 cm, Arrigoni & Di Tommaso, 21.VI.1896 (FI). variously dentate. Apical lobe 2-4 cm, more or less triangular and obtuse; lobules triangular-acute. In- NOTE - This species shows intermediate charac- volucre bracts lanceolate, with a margin: outer 7-8 ters between P. sardoa, exclusive of calcareous sub- x 2 mm, lanceolate-acute, inner up to 12 mm, lan- strata and P. vulgaris growing in several localities of ceolate, with a scarious margin, acute or with a small the island. It is distinguishable, in particular, for the appendage, not callosed. Capitula 2-3 cm in diameter size of the fl owers which are smaller as compared with with yellow ligules. Achenes straw-colored, about 3 those of the two above mentioned species. It differs mm, with a spiny cone, 1/3 as long as the body. Cone from the pink-fl owered P. sardoa in having green 0,5 mm; beak 7 mm; pappus 6-7 mm, white. wings, veined or pink with green veins; leaves, instead, are larger than those P. sardoa, linear-acute or ICONOGRAPHIA - Fig. 2, drawn on material from lanceolate-acuminate resembling those of P. vulgaris. the locus classicus (Maury delineavit). As compared with P. sardoa, the racemes are longer and fl owers more crowded. The greenish-pink fl ow- PHENOLOGY - euestival, fl owering in July-August. ers differ from that of P. vulgaris, both for the colour and for the smaller size of its various parts (pedicels, DISTRIBUTION - Valdinievole (Prov. Pistoia, Tus- bracts and capsule). cany).

ECOLOGY - Sun loving mesophyte, occurring in Taraxacum vallis-nibulae Arrigoni, sp. nov. urban and suburban grasslands, fi eld outskirts and road borders. DIAGNOSIS - Herba perennis, rosulata, scaposa, 20- 25 cm alta, sparse minuteque pilosa, scapis folia longi- Specimina visa - Prov. Pistoia, Ponte Buggianese. tudine subaequantibus, infra involucrum arachnoideis. Margini stradali e campestri, Arrigoni, 25.VIII.2010 Folia irregulariter dentato-lobata, petiolo 5-6 cm longo, (FI) - Ponte Buggianese, Via Stignanese, Arrigoni, 3-4 lobis maximis triangularibus, patentibus, dorso ac 10.IX.2010 (FI) - Ponte Buggianese, Via Stignanese, margine inferiore plus minusve dentatis. Interlobi 0,5-1 Arrigoni, 23.X.2010 (FI). cm longi, varie dentati. Lobus terminalis 2-4 cm longus, subtriangularis, subobtusus, lobulis triangularibus NOTE - Taraxacun vallis-nibulae belongs to the acutis. Involucrum bracteis lanceolatis, marginatis: Sect. Serotina van Soest (Sectio Taraxaca rhodotricha exterioribus 7-8 × 2 mm, lanceolatis acutis; interiori- Hand-Mazzetti), having achenes with straw-colored bus lanceolatis, ad 12 mm longis, margine scariosis, beak; pappus up to 8 mm, whitish. Capitula large apice acutis vel tronatis, nihil callosis. Capitula 2-3 cm with yellow or orange fl owers. It fl owers in summer diametro, ligulis luteis. Achenia straminea, circa 3 mm or autumn. Plant contract and tomentose. longa, pyramide per tertiam corporis partem circa spi- nulosa. Conus 0,5 mm, rostrum 7 mm, pappus albus, 6-7 mm longus. Umbilicus horizontalis (Guss.) DC. (1828) Prodr., 3: 400. TYPUS - Holotypus in FI: “Prov. Pistoia, Ponte Buggianese. Margini stradali e campestri, Arrigoni, Cotyledon horizontalis Guss., Index Sem. Hort. 25.VIII.2010”. Boccadifalco: 4. 1826 Umbilicus gaditanus Boiss., Diagn. pl. orient. ser. DESCRIPTION - Perennial whorled herb, 20-25 1, 6: 58. 1846 cm, sparingly and thinly puberulent, with scapes ap- Cotyledon gaditana (Boiss.) Pau, Ann. Sci. Acad. proximately as long as the leaves; arachnoid on the Polytecn. Porto, 6: 97. 1911 40 Pier Virgilio Arrigoni

Fig. 2 – Taraxacum vallis-nibulae Arrigoni. Plant (x 0,71), details (x 7,1). (A. Maury delineavit) Miscellaneous notes about some taxa of the Italian ﬂ ora 41

Umbilicus horizontalis (Guss.) DC. subsp. gadita- lobes bent outwards and therefore different from the nus (Boiss.) Losa et Riv. Goday, Arch. Inst. Aclim. Sardinian plants. Also the stamens look sessile while Cons. Super. Invest. Ci., 13: 232. 1974. my plants bear more or less long fi laments. According Cotyledon umbilicus-veneris L. subsp. gaditana to Castroviejo, U. gaditanus replaces U. horizontalis (Boiss.) Emberger & Maire, Cat. Pl. Maroc: 1019. (Guss) DC. in the Iberian peninsula; other authors 1941. (Valdes et al., 1987; Bonafé Barcelo, 1978), instead, are of the opinion that it is only a synonym of U. hor- DESCRIPTION - Perennial, succulent, glabrous izontalis. It is therefore relevant to point out which herb, with tuberous rootstock and erect stems, 20- are the key-characters that distinguish U. gaditanus 40 cm. Leaves petiolate, peltate with eccentric petiol, from U. horizontalis. 2-7 cm in diameter, almost round but somewhat In both diagnosis the fl owers are peduncolate and truncate at the base, irregularly crenate-dentate; ba- horizontal and the corolla lobes connivent at the top. sals long petiolate, with many linear dots, caulins According to Boissier (1846), the characters discrim- gradually reduced upwards. Flowers numerous in inating U. gaditanus and U. horizontalis Guss. are terminal cylindrical racemes, 5-20 cm, sometimes weak and variable like, e.g., a dense panicle, corolla branched at base, horizontal or somewhat drooping lobes triangular-acuminate or ovate and tubular and in the lower part at maturity. Pedicels 1,5-2,5 mm, longer fruits. with a linear bract, longer than calyx, 3,5 mm. Calyx 5-lobed, triangular-acute 1,5-2 mm. Corolla tubular, urceolate, 5-6 mm, greenish or pinkish, papery, with Juniperus phoenicea L., Sp. pl.: 1040. 1753 5 triangular-acute lobes, 1,5-2 mm, connivent. Sta- mens 10, epipetalous, in 2 series: the upper on the subsp. phoenicea lobes back with a short fi lament, the lower near the sinus between the lobes with somewhat longer fi la- Several authors have indicated this species for the ments. Carpels 5, oblong, with short terminal style Apuan Alps. Ferrarini & Marchetti (1994) confi rm and capitate stigma. the presence: “Non rara sulle rupi calcaree a solatio della parte settentrionale e centrale della catena, soprattutto nel versante tirrenico, a q. 250-1375 m” (Not rare on Phenology - Latevernal species. It fl owers in April- limestone with southern exposition on the Northern June. and Central part of the mountain range, particularly on the Tyrrhenian side, at 250-1375 m altitude) This Umbilicus horizontalis is a paleotropical species record is certainly comprehensive of the subsp. turbi- from the Mediterranean region and Macaronesia. U. nata (Guss.) Nym. (1881) Consp.: 676 which occurs gaditanus is W. Mediterranean (Iberian peninsula, at lower altitudes. Balearic islands, Algeria). Some populations of higher sites, mainly rocky habitats, have features resembling those of the subsp. NOTE - Our description, based on plants from phoenicea sensu J. do Amaral Franco (1986) Fl. Iber., Sardinia, matches largely that ascribed by Castro- 1: 187, different from the thermophilous ssp. turbi- viejo (1997), to U. gaditanus, but also corresponds nata (Guss.) Nyman (1881) Consp. Fl. Eur.: 676, oc- to the characters and fi gure referred to U. horizontalis curring at lower altitudes and along the Tyrrhenian (Guss.) DC. (1828) by Valdes et al. (1987). I must coasts. point out that Castroviejo’s fi gure shows a plant with The following features distinguish the two subsessile or subsessile fl owers and a tubular corolla with species:

1. Cones globose, 8-10 mm, reddish when ripe. Leaves scale-like, more or less obtuse, with scarious border. Twigs obtuse at apex ...... subsp. phoenicea 1. Cones sub-ovoid, 12-14 mm when ripe, turbinate, green to blackish-violet when ripe. Leaves ovoid-acute without scarious border. Twigs acute at apex ...... subsp. turbinate 42 Pier Virgilio Arrigoni

Please note that, due to progressive ripening of phy by Bechi & Garbari (1994). It is a local hirsute- the cones, the characters are not always easily observ- hairy biotype, always tetraploid (2n = 44 in Bechi able on herbarium exsiccata, therefore they should be et al. (1997) as compared with the vicariant South- checked in the fi eld. European Asperula purpurea ssp. purpurea (2n = 22, Kliphuis (1962) determined on plants from Porto- Specimina visa of subsp. phoenicea - Alpi Apuane. fi no (Liguria). Ancev in Loeve (1974) and Papani- Sotto il Pizzo d’Uccello (versante di Vinca), 4.XI.1935, colaou in Loeve (1984) found the same number on R. Pichi Sermolli (FI) - Toscana. Garfagnana. Valle plants from Bulgaria and Greece. della Turrite Secca: Cave presso Campagrina, m 970, According to Pichi Sermolli, in Ferrarini et al., 4.IV.1955, P.V. Arrigoni (FI) - Alpi Apuane sopra (1997), in the Apuan populations (as already noticed Massa. Lungo la strada fra Campareccia e Pian della by Fiori (1927) the plants are hairy or almost hirsute Fioba, su dolomia, alt. 700 m, 12.IX.1991, E. Fer- while Asperula purpurea is almost glabrous or scabrid. rarini (FI). Nevertheless both species grow on the Apuan Alps. Asperula apuana is hairy with patent hairs, up to 0,5 mm, sometimes longer. Asperula purpurea instead Coris monspeliensis L. subsp. annua (Halàcsy et has antrorse, short, curved hairs. Bald.) Arrigoni, stat. nov. Therefore, due to the chromosomal and morphological differences, this taxon deserves specifi c rank. Basion. - Coris monspeliensis L var. annua Halàcsy & Bald., Verh. Zool.-Bot. Ges. Wien, 42: 578. 1893. Pyrus magyarica Terpò, Ann. Accad. Horti-Viticult. The typical Coris monspeliensis ssp. monspeliensis (Budapest), 22(6, 2): 34. 1960 from Provence and Catalonia is a perennial subshrub. In the Italian peninsula this plant grows only on the This species was originally described as endemic coasts of Liguria. From the Mediterranean Tuscany to Hungary but later its presence in Italy was ascer- to the rest of the peninsula and in the islands, ssp. tained by Arrigoni (1990) in Macchia Lucchese, near monspeliensis is replaced by annual populations with a Viareggio, and again by Arrigoni et al. (2007), in the winter vegetative cycle and springtime fl owering. The Orrido di Botri (Bagni di Lucca in the Lucca prov- nomenclatural change, as proposed above, is desir- ince). able both from the biological and the morphological In the Checklist of the Italian Vascular Flora by point of view. Conti et al. (2005) Pyrus magyarica is considered a synonym of P. cordata Desv. which is indicated to grow in the Abruzzi region. Yet the two species are Asperula apuana (Fiori) Arrigoni, comb. et stat. nov. clearly distinguishable. Pyrus cordata is a plant spread from the Atlantic Basion. - Galium purpureum L. var. apuanum coasts of the Iberian peninsula up to Cornwall. It Fiori, Nuova Fl. Anal. Ital., 2: 491. 1927. has ovate or ovate acuminate leaves with acute apex Asperula purpurea (L.) Ehrend. subsp. apuana (2x1 to 5x3 cm), glabrous to sparsely hairy beneath (Fiori) Bechi et Garbari, Fl. Medit., 4: 223. 1994. and crenate margin. Pedicels 1-2 cm; ovaries woolly. Asperula purpurea (L.) Ehrend. var. apuana (Fiori) Fruits less than 1 cm. Pichi Serm., Prodr. Fl. Reg. Apuan., 2: 202. 1997. Pyrus magyarica (Fig. 2) has almost rounded leaves TYPUS - Lectotypus in FI: “In rupibus Alpium on the short shoots, 1-3,5 x 1-3,5; has ovate-acute Apuanarum prope Mosceta, julii 1875, legit Arcangeli”, leaves on the long shoots (up to 4,5 x 3 cm), glabrous designated by Bechi & Garbari (1994: 223). or with some hairs on the margins, the petiole is 1-3 cm long and the leaf margin is minutely dentate-ser- This specie is endemic to the Apuan Alps and rate with tooth apex small and hardly distinguishable. Tereglio (Coreglia Antelminelli) in the Prov. of Luc- Fruits are almost spherical, 2-2,5 cm, shiny, pruinose. ca. Its characters are well featured in the iconogra- Miscellaneous notes about some taxa of the Italian fl ora 43

Fig. 3 – Prunus magyarica Terpò. Plant and fruit (x 0,75), leaf margin detail (x 3,75). (A. Maury delineavit) 44 Pier Virgilio Arrigoni

Specimina visa - The exsiccata of Pyrus magyarica Specimina visa - Dintorni di Cala Gonone, esp. in FI which had been validated by Terpò are marked Est, alt. M 150, substr. Basaltico, 24.VIII.1998, P. V. with and asterisc: Arrigoni (FI) - Tra Riola e Putzu Idu, 1.X.1997, P. V. Arrigoni et Di Tommaso (FI). * Repubblica di San Marino. M. del Castellaccio, 2.V.1912, R. Pampanini, sub P. communis var. pyraster NOTE - Amaranthus chlorostachys is usually con- L. - *Boscolungo (inizio) forêt entre L. Bocciolo et sidered a synonym of A. hybridus L. (Carretero, 1990; l’Amministration, 7.IX.1885, Levier - *Cerbaie (Luc- Akeroyd in Tutin et al., 1993) or of A. cruentus L. ca), 24.V.1938, E. Francini, sub Pyrus communis - * (Greuter et al., 1984; Conti et al., 2005). According Appennino Tosco-Emiliano. Sasso di Castro. Faggeta to the studied specimens, this species appears to be a cedua del versante Nord, m 950, 10.VIII.1965, M.C. well distinct entity. Margheri, sub P communis var. piraster - *Dall’Eremo a Poggio Scali, 20.IX.1912, Baccarini, , sub P. communis - *Viareggio nella macchia (erb. Beccari) Fragaria viridis Weston, Bot. Univ., 2: 327. 1771 27.V.1857, sub P. communis - Faggete di Vallom- brosa (arbusto nano), 26.VI.1921, Provasi - Selva Fragaria viridis Duchesne, Hist. Nat. Frais: 135, di Arnovecchio, dietro l’ospizio di P. Agostino, 1766, nom. inval. 1.IX.1916, Savelli - Monte Giovi in cacumine mon- Fragaria collina Ehrh., Beitr. Naturk., 7: 26. 1792, tis, 20.VI.1989, Sommier, sub P. communis - Mont- nom. illeg. epiano (Prato) nell’Abetina, 9.VI.1989, Sommier, sub Potentilla viridis (Duchesne) Prantl, Exkurs.-Fl., P. communis - Vintone, Pineta alla Poggiona, Corradi Bayern: 346. 1884. 20.IV.1928, sub P. communis var. pyraster - Comano (Massa Carrara). Tornanti sotto il Passo del Lagastrel- New record for the Sardinian ﬂ ora. This species lo, 22.VII.1986, Arrigoni, Foggi et Ricceri. is from Eurasia; in Italy it grows on the Alps and the Apennines; perhaps introduced in Sardinia.

Amaranthus chlorostachys Willd., Hist. Amaranth.: Specimina visa - Monte Limbara. Cime Est di P. 34. 1790 Balestrieri (granito), 4.VI.1997, P.V. Arrigoni (FI)

Amaranthus retroﬂ exus L. var. chlorostachys (Willd.) Fiori in Fiori & Paol., Fl. Anal. Ital., 1: 321. 1898 Crataegus insegnae (Tineo ex Guss.) Bertol., Fl. Ital., 7: 629. 1851 DESCRIPTION - Annual, erect herb 30-60 cm, with furrowed stems, hairy in the upper part and on Mespilus insegnae Tineo Fl. Sicc. ex Guss., Fl. Sic. the branches. Petioles 1-3 cm; leaves alternate, ovate, Syn., 2(2, Add.): 830. 1844. 3-4 x 1,5-2,5 cm, with a small terminal seta, with Crataegus insengae (sic!) Lojac., Fl. Sic. 1(2): 204. undulate margin and prominent veins on the abax- 1891. ial surface, usually hairy on the margin and on the Crataegus laciniata x C. monogyna subsp. azarella lower surface. Flowers in dense terminal or axillary (Griseb.) Franco, Collect. Bot. Barcin., 7: 471. 1968. clusters. Bracteoles lanceolate-acuminate, 2,5-3 mm, scarious on the sides and green on the back. Tepals Deciduous shrub growing in Sicily at Isnello, on more scarious, 1,5-2 mm with a short mucrone at the the Nebrodes (LOJACONO (1891, Table XVII). tip. Capsule dehiscing with a tuberculed opercle biﬁ d Giardina et al. (2007) do not include this species in on top. Seeds black, glossy, lenticular. their checklist.

ECOLOGY - Heliophilous plant of waste areas, Specimina visa - Sardegna. Samatzai. Garighe su road borders and neglected lands. calcare presso il cementiﬁ cio, 24.IV.1985, Arrigoni et Di Tommaso (FI). Miscellaneous notes about some taxa of the Italian ﬂ ora 45

Linum tenuifolium L., Sp. pl.: 278. 1753 Centaurea paniculata L. subsp. maremmana (Fiori) Arrigoni, Parlatorea, 6: 71. 2003 New record for Sardinia. Moris (1837), indicated his species for the island but as synonymous of L. Centaurea paniculata L. var. aetaliae Sommier f. angustifolium Huds., common “in pascuis maritimis, maremmana Fiori in Fiori & Paol., Fl. Anal. Ital., 3: collinis et submontanis” with obvious reference to L. 339. 1904. bienne Miller. As far as in my knowledge no one ever Centaurea aplolepa Moretti subsp. maremmana indicated this species for the island. (Fiori) Dostal (1976) Bot. J. Linn. Soc., 71: 202. Linum tenuifolium is a deciduous, pluristem, cal- Centaurea aplolepa Moretti var. maremmana ciphilous subshrub, occurring on grasslands, rocks (Fiori) in Fiori & Bég., Sched. Fl. Ital. Exs., 12: 83. and rock faces. 1914.

Specimina visa - Urzulei. Rupi calcaree delle This taxon was described by Fiori who indicated pendici Ovest e Nord-Ovest di M. Oseli (m 990). in the small capitula (4-5 cm of diameter) and the ab- 30.06.1973, P.V. Arrigoni et P.L. Di Tommaso (FI). sence of a pappus the key features that differentiate C. paniculata from C. aetaliae (Sommier) Bég. The pro- tologue is based on two exsiccata: M. Cerboli (Amidei Asphodelus tenuifolius Cav., Anal. Cie. Nat. 3: 46, in hb. fl .!) e Castiglioncello (Campana in hb. fl .!). t. 27, f. 2. 1801 The description of C. aetaliae, comprehensive of the f. maremmana, stresses the importance of one Asphodelus fi stulosus L. subsp. tenuifolius (Cav.) character: “margine delle squame brevemente ciliato Richter, Pl. Eur., 1: 193. 1890. (massime nelle super.) o denticulato” (bract margins Asphodelus fi stulosus L. var. tenuifolius (Cav.) Bak- shortly ciliate (the more so on the upper ones) or er, J. Linn. Soc. London (Bot.), 15: 272. 1876. denticulate). Asphodelus maroccanus Gandoger, Bull. Soc. Bot. Since C. aetaliae, distributed in the island, has cil- Fr., 55: 565. 1908. iate bracts, we might deduce that the f. maremmana Verinea tenuifolia (Cav.) Pomel, Mat. Fl. Atl.: 2. should have denticulate margin but the exsiccata from 1860. M. Cerboli collected by Amidei, mentioned by Fiori and designated as lectotypus by Arrigoni (2003), is DESCRIPTION - Annual, scapose herb, 40-70 cm, shortly fi mbriate on the upper bracts. This charac- with many leaves all basal, sheathing, 5-20 (30) x 1-3 ter was not assumed as differential but, added to the mm, long about as half as the scape, fi stulose, subte- absence of a pappus, leads us to refer this exsiccatum rete, rough on the veins. Scape simple or branched, to Centaurea paniculata ssp. carueliana (Micheletti) with small oval-lanceolate, acuminate bracts. Pedicels Arrigoni. 2-4,5 mm, progressively enlarged towards the apex. Conversely the other specimen cited by Fiori Tepals oblong-elliptical, 3-7 x 2-4 mm, pinkish- (“Castiglioncello, leg. Campana 30 Luglio 1865”) white, with a dark-red middle vein. Stamen fi laments shows all the characters (diameter of capitula, den- enlarged and papillose towards the base. Capsule glo- ticulation of bracts, absence or strong reduction of bose-ovoid with transversely grooved valves. pappus) that make it eligible as lectotypus in replace- ment of the one previously indicated. ICONOGRAPHY - Fig. 44 in Diaz Lifante & Valdes (1996). Acknowledgements DISTRIBUTION - Mediterranean-saharo-sindic/ Sicily at Palermo and the island of Linosa, New to J thank Dr. M. Rizzotto for revising the English text Sardinia at Tavolara. and Prof. E. Nardi for the Latin diagnoses. Specimina visa - Sardegna. Isola di Tavolata, P.V. Arrigoni, 1.VI.1995 (FI). 46 Pier Virgilio Arrigoni

REFERENCES

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Summary: According to the last studies on the Italian Flora some ﬂ oristic novelties are reported in order to clarify their taxonomy and distribution. Two new species to the Italian Flora are described: Polygala padulae Arrigoni and Taraxa- cum vallis-nibulae Arrigoni.