Ranunculus quadrivaginatus (Valta) Ericss. 1992

Evarts-Bunders, Pēteris, Evarte-Bundere, Gunta, Krasnapoļska, Dana, Svilāne, Inita & Bojāre, Aiva, 2021, Studies On The Species Of Ranunculus Auricomus Complex In The Flora Of Latvia: Ranunculus Fallax Group, Acta Biologica Universitatis Daugavpiliensis 21 (1), pp. 37-58 : 48-49

15. Ranunculus quadrivaginatus (Valta) Ericss. 1992 , Ann. Bot. Fenn. 29, 2: 151. Makstainā gundega ( Fig. 17 .)

Most important morphological characters:

Medium-sized (slim) plant with lanceolate or linear-lanceolate, sessile or subsessile cauline leaves with whole margin or with 1–3 irregular teeth. Most developed basal leaves relatively small, up to 6 cm (often smaller), reniform, with angle 20–120° of leaf base. All basal leaf cycle with nearly whole leaf blades, first (juvenile) leaves with very wide angle of leaf base. Flowers with partially developed petals.

Distribution and ecology in Latvia: Occurs relatively rarely in the whole territory of Latvia. Localities are known mainly from different natural habitats – rich nemoral broad leaved, mixed spurce and white alder forests, different grasslands (Barkava, Dviete floodlands, Rite, Tilža, Valgale) and old manor parks (Augstkalne, Kabile, Krote, Vecauce).

Figures

Fig. 17. Ranunculus quadrivaginatus (Valta) Ericss.