Odontarrhena rigida 2018
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publication ID |
https://doi.org/ 10.11646/phytotaxa.351.1.1 |
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persistent identifier |
https://treatment.plazi.org/id/03E75A00-783F-F209-FF33-FAF13D8EB503 |
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treatment provided by |
Felipe |
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scientific name |
Odontarrhena rigida |
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5. O. rigida ( Nyárády 1928: 101) L.Cecchi & Selvi View in CoL , comb. nov.
(≡) A. bertolonii subsp. rigidum Nyár. ≡ A. rigidum (Nyár.) Nyárády (1930: 393) .
Neotype (designated here):— ALBANIA. “ prefettura di Elbasan, distretto di Elbasan, a sud-est di Elbasan, pendii serpentinosi sopra l’abitato di Shushicë, 220 m, 41° 5’55.35”N, 20° 8’57.25”E ”, 14/07/2016, I. Bettarini, L. Cecchi, A. Coppi & F. Selvi, FI050434 , FI! GoogleMaps
Isoneotypes:—B!, K!, Herb. Cecchi no. 3321!
The neotype selected here is from near the same locality of the original collection, formerly in B: “Mittel-Albanien: Mali Sphatit südlich Elbasan, in offenem Serpentinschutt bei Leshan und Mali Shüshices massenhaft, 800 m. ü. M.”, 01/06/1924, F. Markgraf.
Erect and somewhat rigid flowering stems, 10–20 cm. Sterile shoots at the base always present, branched and densely leafy. Basal leaves 12–18(22) × 1.3–2.0 mm, narrowly spathulate-lanceolate, tapering into petiole, blade often gutter-like folded along the midvein and arching, subacute, green with only scattered hairs on upper surface, greenish on lower surface for 2 layers of denser hairs with 12–24 rays, c. 0.25 mm across. Inflorescence corymbose, with rigid, broadly divaricated secondary racemes, the lateral ones with up to 15(2) fruits. Fruiting pedicels erecto-patent, rigid. Sepals 1.5–2.0 × 0.7–1.0 mm. Petals 22.8 mm. Style ca. 1.5 mm. Siliculae 4.5–5.0 × 2.4–2.9 mm, almond-shaped, symmetrical; valves not undulate, indistinctly veined, glabrous. Seeds ca. 1.8 long, including a very narrow wing up to ca. 0.15 mm. Figs. 3E View FIGURE 3 , 6H View FIGURE 6 , 7H View FIGURE 7 , 11 View FIGURE 11 .
Phenology. Flowering from April to early May, fruit ripening until late June ( Fig. 4 View FIGURE 4 ).
Chromosome number. 2n = 16 ( Fig. 5B View FIGURE 5 ); plants from the type locality ( Mt. Shpat , FI050434 ) .
Distribution and ecology. Endemic to central Albania in the Shkumbin river valley and adjacent massifs in the districts of Elbasan and Librazhd (Shpat, Shebenik). It grows in primary, mostly undisturbed habitats, such as rocky slopes, gravels and stony ground, always on serpentine, from 200 to 1250 m a.s.l. ( Fig. 1 View FIGURE 1 ; Appendix 1).
Nickel accumulation. Ni levels in this species were variable but always above 7000 μg g-1 dw ( Table 1). The maximum concentration was detected in plants from Mt. Shebenik, while the lowest was in samples from the area of Mt. Shpat.
Comments. Originally described as a subspecies of the Italian endemic O. bertolonii (Desv.) Jord. & Fourr. ; the specific status of this taxon was correctly recognized two years later by Nyárády himself (1930). Major distinguishing characters are the lower habit, the denser and longer basal leaves on branched sterile shoots, greenish on both surfaces, the shorter and denser partial racemes and the larger silicules ( Figs. 6H View FIGURE 6 , 11 View FIGURE 11 ). In addition, flowering and fruit ripening occur considerably earlier than in O. bertolonii . The interpretation of this taxon as a synonym of the latter ( Ball & Dudley 1993, Jalas et al. 1996) is due to a poor understanding of the species characters, since the short Latin diagnosis was the only available element after the destruction of the type material in B.
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"Alexandru Ioan Cuza" University |
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Nationaal Herbarium Nederland, Leiden University branch |
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Harvard University - Arnold Arboretum |
| F |
Field Museum of Natural History, Botany Department |
| FI |
Natural History Museum |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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