Studies On The Species Of Ranunculus Auricomus Complex In The Flora Of Latvia Ranunculus Auricomus Group: Species With Hairy Receptacles Author Evarts-Bunders, Pēteris Corresponding author: Pēteris Evarts-Bunders. Daugavpils University, Institute of Life Sciences and Technology, Parādes Str. 1 A, Daugavpils, LV- 5401, Latvia, E-mail: peteris. evarts @ biology. lv Author Evarte-Bundere, Gunta Author Krasnopoļska, Dana Author Svilāne, Inita Author Bojāre, Aiva text Acta Biologica Universitatis Daugavpiliensis 2022 22 1 43 66 journal article 10.5281/zenodo.12649766 1407-8953 12649766 Ranunculus obtusulus Markl. 1940 . Memoranda Soc. Fauna Fl. Fenn. 16: 49. ( Fig. 16 .) Most important morphological characters: Medium-sized (slim) plant with oblanceolate or linear sessile cauline leaves with whole margin. Most developed basal cycle leaves small to medium-sized with angle 70–150° of leaf base. All leaves in cycle typically round-shaped, with rounded leaf lobes. Largest leaves with 3-lobed leaf blade with wide, non-overlapped with lobed or cleft (bot not dissected) lateral segments, all segments with rounded leaf lobes. Some leaves of basal cycle can be with whole leaf blade. Flowers with nearly of fully developed petals. Distribution and ecology in Latvia : Relatively rare in the whole territory of Latvia. Grows in mostly in different types of meadows (pastures, alluvial meadows, even lawns), different forest types – from deciduous oak forests to nemoral aspen forests on mineral soils, as well old manor parks and other anthropogenic habitats. Figure 15. Ranunculus obtusidens (Julin) Ericcs. Figure 16. Ranunculus obtusulus Markl. Figure 17. Ranunculus olgandrus (Markl.) Ericcs. Figure 18. Ranunculus orbicans (Markl.) Ericcs. Ranunculus oligandrus (Markl.) Ericcs. 1992 . Ann. Bot. Fenn., 29(2): 147. ( Fig. 17 .) – Ranunculus auricomus subsp. oligandrus Markl. 1961 . Fl. Fenn. 3: 88.