Chromosome numbers in plant taxa endemic to the Balearic Islands

Karyology of Limonium (Plumbaginaceae) species from the Balearic Islands and the western Iberian Peninsula

“…The Balearic Islands comprise a continental archipelago for which the basic karyological knowledge of the sexually reproducing endemic flora has been revised recently (Castro & Rosselló, 2005, 2006, 2007. Among the genera containing agamospermous species, Limonium Mill.…”

Contribution to the Karyological Knowledge of Mediterranean Romulea Species (Iridaceae)

“…Both authors admit that due to dysploidy, also some other, secondary basic chromosome numbers occur, such as x=14, 11, 10, 9. Our data clearly suggest x=9 as a shared basic chromosome number for all investigated taxa, contrarily to x=14, favoured recently by Castro and Rosselló (2005). Interestingly, x=9 was already proposed as the basic chromosome number for the whole genus Romulea by Gwynn (1958) who counted 2n=18 in South African species such as R. flava (Lam.)…”

“…Voucher specimens of the plants used for karyological analyses are kept in CAG, PI and SIENA herbaria (Holmgren et al 1990). Ploidy levels, chromosome numbers (column 2n) and chromosome size ranges are given, including the data obtained here (in bold, counted by LP) and those published previously (in normal type with superscripts, for more details on the localities see Table 1) a Castroviejo (1984); b Rizzotto (1992); c Castro and Rosselló (2005); d Contandriopoulos (1962); e Brullo et al (1995) Karyological Analyses…”

Cytotaxonomic investigations on Allium valdecallosum (Amaryllidaceae), a critical species endemic to Morocco

“…Aedo (2013) however considered A. reconditum , as well as A. chrysonemum , as synonyms of A. rouyi , though A. reconditum differs in its hexaploid (2n = 6x = 48) chromosome complement (Pastor 1985), the occurrence of 2–3 leaves and pale pink tepals with a pink midrib. Allium grosii is another hexaploid species (Brullo et al 1992, Castro and Rosselló ) like A. reconditum , differentiating from A. valdecallosum and the other species of this group in having a flat leaf blade, cylindrical and slightly urceolate perigon up to 8 mm long, pink‐purplish tepals with dark purplish midrib, very short yellow–purplish stamen filaments, 1–2 mm long, purplish‐pink anthers and ovary with less developed nectariferous pores. Allium franciniae also has some significant features in common with A. valdecallosum , regarding the outer bulb tunics, spathe valves and ovary, as well as the ecology, but it is morphologically more similar to A. grosii with glabrous leaves, very small and 3–5‐nerved spathe valves, cylindrical and slightly urceolate perigon, stamens included, and ovary with less developed nectariferous pores; in addition both species are characterized by bulbilliferous bulbs and grow in the rocky crevices (Brullo et al 1992).…”