Ranunculus brachyphyllarius (Markl.)

Ranunculus brachyphyllarius (Markl.)

Ericss. 1992. In: Svensk Bot. Tidskr. 86: 78.

Most important morphological characters: gracile or slim plant with toothless (some cauline leaf segments can be with some large teeth) linear cauline leaves (length-width ratio ± 10:1), and small most developed basal leaves with angle 40–100° of leaf base. Basal cycle leaves mostly trilobated with no leaves with whole leaf blade – most developed leaves with 3-lobed leaf blade with deeply lobed lateral segments, lateral and main segments sessile, without petioles, lobes with rounded tips Flowers with fully or nearly fully developed petals. The species resembles small plants of R. acrifolius or R. amplisinus but differs by sessile main segments of basal leaves and fully developed corollas ( Fig. 6 View Figure 6 ).

140 Distribution and ecology in Latvia: relatively rarely and evenly throughout the whole territory of Latvia, relatively less often in the northern part of Latvia. Species known mostly from old manor parks: Ēbeļmuiža, Kazdanga, Degole, Dole, Vilce, Ambeļi, Ziemeļblāzma, much less often in alluvial meadows and forest edges – such as Lubāns wetland and Laucese river floodplain.

Ranunculus cosmophyllus Ericcs. 1992 . In: Ann. Bot. Fenn. 29(2): 136.

Most important morphological characters: small or medium-sized (slim) plant with linear, narrow toothless cauline leaves. Most developed basal cycle leaves small to medium-sized with angle 40–100° of leaf base, with 3-lobed leaf blade, where biggest, most developed lateral lobes shallowly divided, but some smallest leaves in cycle with deeply lobed lateral segments, lateral and main segments sessile. All flowers with reduced petals. The species resembles R. acrifolius or other similar species of this group, but differs by only shallowly lobed lateral lobes of biggest basal leaves ( Fig. 7 View Figure 7 ).

Ranunculus Auricomus Complex in the Flora of Latvia. Ranunculus Auricomus Group – Species with Glabrous Receptacles

Distribution and ecology in Latvia: not very common, evenly in the whole territory of Latvia in different types of grasslands: in mesic pastures, alluvial grasslands, forest margins and roadsides, to a much lesser extent in parks and anthropogenic areas. One of the commonest species of this complex in Latvia.