Oreocomoides Kljuykov, 2023

Kljuykov, Eugene, Lavrova, Tatiana, Terentieva, Elena, Ukrainskaja, Uliana & Zakharova, Ekaterina, 2023, Phylogeny and taxonomic review of Oreocomopsis with description of a new genus Oreocomoides (Apioideae, Apiaceae), Phytotaxa 630 (1), pp. 1-20 : 15-17

Oreocomoides Kljuykov gen. nov.

Perennial herbs, erect, almost glabrous, stems single, branching in upper part, cauline leaves with narrow long sheaths, leaf blades heterophyllous: bipinnate in lower part with primary segments on short petiolules and long narrow-linear lobes 3–5 (10) cm long, 1–2 (3) mm wide; and narrow-linear pinnate with entire narrow-linear segments 5–20 mm long in upper part. Bracts (1–) 3–5 extremely polymorphic, linear or pinnate with linear lobules 1–3 (–5) cm. The longest bracts exceed the umbel. Rays 14–15, thin, slightly unequal, scabrous, 3–15 cm long. Bracteoles 8, filiform, elongated, ciliated, 1–2 cm long, exceed umbellule. Pedicels about 5 mm. Flowers 20–40, calyx teeth noticeable, sharply unequal; petals pink, at base with well-developed claw, almost entire, with oval plate and short incurved apex. Stylopodia pressed-conical, styles short. Fruits glabrous, almost cylindrical, carpophore is bipartite almost to base. Mericarps slightly dorsally compressed, oblong; ribs all similar, narrowly winged, slightly widened at the base; vascular bundles slightly elongated in radial direction; commissure narrow. Secretory ducts between ribs 2–3, at commissural side 4–6; endosperm at commissural side almost flat.

Type: Oreocomoides stelliphora (Cauwet & Farille) Kljuykov

Affinities:— The new genus Oreocomoides markedly differs from Oreocomopsis in many morphological characters, such as heterophyllous leaf blades: bipinnate in lower part and narrow-linear pinnate in upper part; the primary leaf segments almost sessile on short petioles up to 0.5 cm long; bracts extremely polymorphic, linear or pinnate with linear lobules; calyx teeth developed; petals with oval plate, at base with well-developed claw; pedicels rounded; mericarps ribs all the same, narrowly-winged, slightly widened at the base.

Etymology:— The name displays a connection with the genera Oreocome and Oreocomopsis .

Distribution:— A monotypic genus distributed in Nepal, NW India. ( Fig. 2 ).

Figures

FIGURE 2. Distribution map of Oreocomopsis species: O. dochenensis (pink triangles), O. longiinvolucellata (green dots), O. aromatica (blue dots) and Oreocomoides stelliphora (white triangles).