identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
FB1E879F4055D60150826329FE10FEF3.text	FB1E879F4055D60150826329FE10FEF3.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Mallomonas kalmykovae Ignatenko, E. S. Gusev, & Yatsenko-Stepanova 2025	<div><p>Mallomonas kalmykovae Ignatenko, E.S. Gusev, &amp; Yatsenko-Stepanova sp. nov. (Figs. 5–15)</p><p>Cells are 12.5–13.0 × 6.0–6.2 μm, armoured with apical domed collar scales, domeless body scales and small rear scales with short spines. The body scales are oval-rhombic, slightly asymmetrical, 3.7–4.7 × 2.2–3.2 μm, with a shield, posterior and anterior submarginal ribs, anterior and posterior flanges, and a posterior rim. The shield is patterned with a reticulated meshwork, creating a dense system of irregular, polygonal apertures and scattered, delicate papillae on the surface. The anterior submarginal rib is raised above the shield, with 10–15 struts on each side, radiating to the anterior flange. There is a papilla at the distal end of each strut near the margin of the anterior flange. The anterior flange is narrow, with struts radiating from the anterior submarginal rib. The posterior submarginal rib is fused with the anterior submarginal rib. The posterior submarginal rib is wide, with internal struts, visible only in TEM images, and with 3 parallel longitudinal ribs on the surface. There are 1 to 4 pits in the angle of the posterior submarginal rib, usually 1 or 2. Each pit contains a small, rimmed base plate pore inside. There are 2-3 rows of meshes on the shield arranged in parallel rows along each arm of the posterior submarginal rib. The posterior rim is wide, smooth, encircles half of the scale, with a depression in the angle. The posterior flange is very narrow and almost invisible. The collar scales are 3.6–4.3 × 2.2–2.6 μm, asymmetrical, elongate and have a broadly rounded, proximal end and narrower distal end, with a well-developed dome. The shield of the collar scales has a meshwork pattern similar to the body scales and smooth area near the dome. The dome is oval in outline, with reticulation, papillae and a sharply pointed peak at the apex. There are several pits with rimmed base plate pores in the angle of the posterior submarginal rib. The rear scales are similar in structure to the body scales but more asymmetrical, bearing small spines and smaller in size, 2.6–2.9 × 1.6–2.0 μm. Bristles are 9.3–10.4 μm in length, slightly curved and pointed. Cysts were not observed.</p><p>Holotype (here designated):— Portion of a single gathering of cells on SEM stub 55_I_2 deposited at the Herbarium of the Steppe Institute of the Ural Branch of the Russian Academy of Sciences, Orenburg (ORIS). Figure 9 is a representative scale from the type specimen.</p><p>Type locality:— RUSSIA: Orenburg region, small unnamed ephemeral pool (“Svetlinskii” Biological Reserve). Latitude/Longitude: 51°02′17.4″N, 60°47′15.0″E, 03 May 2023. Leg. M.E. Ignatenko.</p><p>Etymology:— The species is named in honor of Olga G. Kalmykova for her significant contribution to the study of the flora of the Southern Urals (Orenburg Region).</p><p>Distribution: — In addition to the type locality, this species has been observed in four more localities in Russia: two small ephemeral pools (51°02′19″N, 60°47′09″E and 51°02′18.0″N, 60°48′42.0″E) and Lake Obalykol’ (50°56′13.9″N, 60°44′59.9″E) of the “Svetlinskii” Biological Reserve (Orenburg region, Svetlinskii district), and the ephemeral Lake Nezametnoye (51°01′20.7″N, 61°13′29.9″E) of the “Orenburgskii” State Nature Reserve.</p><p>Ecology: —The species has been recorded in small, shallow, ephemeral waterbodies at water temperatures of 12–14 ⁰C and pH of 6.5–7.5.</p></div>	https://treatment.plazi.org/id/FB1E879F4055D60150826329FE10FEF3	Public Domain	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.		Plazi	Ignatenko, Marina;Gusev, Evgeniy;Yatsenko-Stepanova, Tatyana	Ignatenko, Marina, Gusev, Evgeniy, Yatsenko-Stepanova, Tatyana (2025): Two new species of the genus Mallomonas (Chrysophyceae) from ephemeral pools in the steppe zone of the Southern Urals, Russia. Phytotaxa 705 (1): 86-96, DOI: 10.11646/phytotaxa.705.1.7, URL: https://doi.org/10.11646/phytotaxa.705.1.7
FB1E879F4053D60050826189FE81F876.text	FB1E879F4053D60050826189FE81F876.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Mallomonas prominentia Ignatenko, E. S. Gusev, & Yatsenko-Stepanova 2025	<div><p>Mallomonas prominentia Ignatenko, E.S. Gusev, &amp; Yatsenko-Stepanova sp. nov. (Figs. 16–25)</p><p>Cells are 13.5–14.3 × 6.5-7.0 μm, armoured with apical domed collar scales, domeless body scales and small rear scales with short spines. The body scales are rhombic, slightly asymmetrical, 3.0–3.7 × 2.0–2.5 μm, with a shield, posterior submarginal rib, anterior and posterior flanges, and a posterior rim. The shield is raised above the anterior flange and posterior submarginal rib, especially in the proximal part, where it forms a raised protrusion with distinct, thickened margins in the shape of the letter “V”. The proximal part of the shield is separated from the posterior submarginal rib by a deep groove. The shield is patterned with a reticulated meshwork, creating a dense system of irregular, polygonal apertures and delicate papillae on the surface. In the central part of the shield, the papillae are scattered irregularly, and along the anterior flange and partly along the posterior submarginal rib they form distinct rows in such a way that a diamond-shaped figure is formed. The anterior flange is wide, with weakly developed 10–15 struts on each side, radiating from the shield. There is a papilla at the distal end of each strut near the margin of the anterior flange. The posterior submarginal rib is wide, smooth, with internal struts, visible only in TEM images. There is one pit with rimmed base plate pore in the angle of the posterior submarginal rib. The posterior rim is wide, smooth, encircles half of the scale, with a depression in the angle. The posterior flange is narrow. The collar scales are 3.5–3.7 × 2.0–2.2 μm, asymmetrical, elongate and have a broadly rounded, proximal end and narrower distal end, with a well-developed dome. The shield of the collar scales has a meshwork pattern similar to the body scales. There is a thickened rib and groove along the posterior submarginal rib. There are several pits with rimmed base plate pores in the angle of the posterior submarginal rib. The dome is oval in outline, with reticulation, papillae and a sharply pointed peak at the apex. The rear scales are similar in structure to the body scales, with a groove along the posterior submarginal rib, but smaller in size, 2.6–2.9 × 1.6–2.0 μm, more asymmetrical, bearing small spines, and with the less raised shield. Bristles are 6.9–8.6 μm in length, smooth, slightly curved and pointed. Cysts were not observed.</p><p>Holotype (here designated):— Portion of a single gathering of cells on SEM stub 54_I_2 deposited at the Herbarium of the Steppe Institute of the Ural Branch of the Russian Academy of Sciences, Orenburg (ORIS). Figure 25 is a representative scale from the type specimen.</p><p>Type locality:— RUSSIA: Orenburg region, small unnamed ephemeral pond (“Svetlinskii” Biological Reserve). Latitude/Longitude: 51°02′19″N, 60°47′09″E, 03 May 2023. Leg. M.E. Ignatenko.</p><p>Etymology:— The epithet “prominentia ” (protrusion) refers to the characteristic elevation of the proximal part of the shield.</p><p>Distribution: — This species was found in the type locality only.</p><p>Ecology: —The species has been observed in small shallow ephemeral pond at water temperatures of 14–20 ⁰C and pH of 6.3–8.6.</p></div>	https://treatment.plazi.org/id/FB1E879F4053D60050826189FE81F876	Public Domain	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.		Plazi	Ignatenko, Marina;Gusev, Evgeniy;Yatsenko-Stepanova, Tatyana	Ignatenko, Marina, Gusev, Evgeniy, Yatsenko-Stepanova, Tatyana (2025): Two new species of the genus Mallomonas (Chrysophyceae) from ephemeral pools in the steppe zone of the Southern Urals, Russia. Phytotaxa 705 (1): 86-96, DOI: 10.11646/phytotaxa.705.1.7, URL: https://doi.org/10.11646/phytotaxa.705.1.7
