Odontarrhena moravensis, (Meyer 2011: 65) L. Cecchi & Selvi

Cecchi, Lorenzo, Bettarini, Isabella, Colzi, Ilaria, Coppi, Andrea, Echevarria, Guillaume, Pazzagli, Luigia, Bani, Aida, Gonnelli, Cristina & Selvi, Federico, 2018, The genus Odontarrhena (Brassicaceae) in Albania: Taxonomy and Nickel accumulation in a critical group of metallophytes from a major serpentine hot-spot, Phytotaxa 351 (1), pp. 1-28 : 18

publication ID	https://doi.org/ 10.11646/phytotaxa.351.1.1
persistent identifier	https://treatment.plazi.org/id/03E75A00-783F-F20A-FF33-FF153C68B253
treatment provided by	Felipe
scientific name	Odontarrhena moravensis
status

Treatment

4. O. moravensis ( Meyer 2011: 65) L.Cecchi & Selvi View in CoL , comb. & stat. nov.

(≡) A. smolikanum subsp. moravense F.K.Mey.

Holotype:— ALBANIA. “ Korça, Mali i Moravës, bei Drenova , ca. 1100–1200 m, Serpentin ”, 12/09/1961, F. K. Meyer, Flora Albanica no. 6144, JE00016687 , JE!

Isotype:—JE00016688, JE!

Cushion-like habit with erect-ascending flowering stems, 8–15(18) cm. Sterile shoots at the base numerous, branched and densely leafy. Basal leaves 4–8 × 1.2–1.6 mm, narrowly obovate-spathulate, blade well distinct from petiole, slightly folded, subacute, greenish on upper surface, whitish-silvery below for overlapping hairs with 15–22 rays, ca. 0.5 mm across. Cauline leaves similar to the basal ones. Flowering stems straight, terminating into short, simple (very rarely 1-branched), racemes, remaining compact in fruit, with 10–18 silicles. Fruiting pedicels patent, rigid. Sepals ca. 1.8 mm, stellate-pubescent. Petals ca. 2.5 mm long. Style ca. 1.5 mm. Siliculae 4.8–5.5 × 2.8–3.2 mm, elliptic and almond-shaped, subacute at apex, symmetrical; valves often somewhat undulate, veined, glabrous. Seeds ca. 1.6 mm, including a very narrow wing up to ca. 0.15 mm. Figs. 3D View FIGURE 3 , 6F View FIGURE 6 , 7F View FIGURE 7 , 10 View FIGURE 10 .

Phenology. Flowering from April to early June, fruit ripening rarely extending to mid July ( Fig. 4 View FIGURE 4 ).

Chromosome number. 2n = 16 ( Fig. 5C View FIGURE 5 ); plants from the area of Voskopoje, west of Korça (FI050441).

Distribution and ecology. Endemic to the serpentine massifs on the Korça region in E Albania (Morave, Voskopoje, Devolli). It grows only in primary, undisturbed habitats, such as rocky slopes, gravels and stony ground, always on serpentine, from 800 to 1500 m a.s.l. It is allopatric with respect to both O. smolikana subsp. serpentinicola and O. rigida ( Fig. 1 View FIGURE 1 ; Appendix 1).

Nickel accumulation. Ni levels in this species were variable but always above 5000 μg g-1 dw ( Table 1).

Comments. Originally described as a subspecies of A. smolikanum from a single collection, based on the glabrous silicles ( Meyer 2011). This character, however, is diagnostic with respect to Greek O. smolikana subsp. smolikana (with stellate-pubescent silicles), but not to Albanian subsp. glabra which also has glabrous fruits ( Figs. 6E, F View FIGURE 6 ). Nevertheless, the specific status of this taxon is justified by a combination of diagnostic traits that can be readily appreciated on native populations and complete herbarium material, such as the smaller and narrowly spathulate-lanceolate basal leaves, the short and simple racemes, the patent fruit pedicels and the seeds with narrower wing. As in other species, the latter character is associated with the diploid chromosome complement ( Cecchi et al. 2013), whereas typical O. smolikana is tetraploid with distinctly winged seeds (see above). This species also differs from O. rigida by the lower, cushion-like habit, the smaller leaves with white silvery lower surface, the simple racemes and the larger silicles with slightly undulate valves ( Fig. 11 View FIGURE 11 ).