identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
039162299414FFC6A92CFC4FFEF5FA64.text	039162299414FFC6A92CFC4FFEF5FA64.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Anastrophyllum astorgae Mamontov & Vilnet 2023	<div><p>Anastrophyllum astorgae Mamontov &amp; Vilnet, sp. nov. Fig. 2–6.</p><p>Type: CHILE, Los Lagos Region, Palena Province, Chaitén Commune, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-72.42528&amp;materialsCitation.latitude=-43.275696" title="Search Plazi for locations around (long -72.42528/lat -43.275696)">Sendero Ventisquero Yelcho</a>, 43°16’32.5” S, 72°25’31.0” W, 155 m a.s.l., evergreen-coniferous-bamboo-fern-moss forest, on tree, 29.XI.2021, Mamontov 928-3 (MHA-9088477 – holotype, CONC, G, KPABG, MO – isotypes) .</p><p>Etymology. The species is named for Dr. Anna Beatrice Astorga Roine (Center for Research on Patagonia Ecosystems) for her great help in our study of bryophytes in southern Chile.</p><p>Diagnosis. A transversely to succubously foliated Cephaloziella -like liverwort with deeply bilobed leaves, differs from all species of Cephaloziella by the shape of mature sterile leaves and the larger ratio of their size to the stem diameter, from the similar Anastrophyllum crenulatum and A. novazelandiae by the more deeply bilobed leaves and the absence of nodular thickenings in leaf cells, from the similar Sphenolobopsis pearsonii (Spruce) R.M. Schust. by the absence of underleaves.</p><p>Description. In thin, depressed, yellowish to blakish brown mats; stems intricately interwoven or creeping as isolated stems among other bryophytes. Shoots 1–5 mm long, 160–610 µm wide, filiform, brittle when dry, prostrate, with shoot apices often attenuate. Stems 48–90 µm in diameter, 4–5 cells high in cross section (Fig. 5M, N), remotely furcate, branches intercalary, from leaf axils (Fig. 4D, K) or postical stem face (Fig. 3I, 4D, I, 5I); cortical cells 17–30 µm long, 13–18 µm wide, 1.0–2.3× as long as wide, rectangular, mostly thick-walled, in cross section almost equal in shape and size with that of medulla. Rhizoids sparse, scattered. Leaves remote, 180– 355 µm long, 155–270 µm wide, (0.94–)1.0–1.4× as long as wide, spreading or erect-spreading or squarrose (Fig. 4D, 5I) at base, concave (Fig. 5B) to conduplicate (Fig. 5F), lobes suberect or often nearly erect and parallel to stem, the lobe tips often incurved (Fig. 5B, D); leaves transversely to slightly succubously inserted, oblong-ovate to obovate or subquadrate, sinus descending to 0.35– 0.58 of the leaf length, V-shaped, at base acute to obtuse; lobes mostly subequal, rarely almost equal, divergent to suberect, narrowly triangular-ovate, acute to acuminate, (4–)5–8(–10) cells broad at base, margins entire or ± sinuous; lobes often terminated by 1–2 superposed cells. Cells equally thick-walled, at lobe bases 14–23 µm long, 10–15 µm wide, 1.0–1.5(–1.9)× as long as wide, subquadrate to rectangular; cuticle papillose with relatively small (in comparison with the size of the cell lumen), rounded to elongated papillae (Fig. 6). Underleaves absent. Asexual reproduction not observed. Dioecious (?). Androecia not found, unfertilized gynoecia terminal on leading axis, always with innovations. Gynoecial bracts in 3 pairs, becoming gradually larger, the innermost bracts much larger than leaves but somewhat less deeply bifid (sinus descending to 0.39–0.52 of the bract length), leaflike, elliptic to ovate, 490–580 µm long, 320–470 µm wide, 1.24–1.52× as long as wide, sheathing at base, with acute and erect, lanceolate lobes; the margins entire or with 1–2 blunt teeth and/or a short appendage near antical base; bracteole vanishing.</p><p>Differentiation. Anastrophyllum astorgae is one of the most small-sized species of the genus; its Cephaloziella -like habit easily distinguishes it from all other species of Anastrophyllum . The underdeveloped minute shoots of A. crebrifolium can be confused with A. astorgae, however they are distinguished from the latter by the leaf margins crenulate via dilated septa between marginal cells (in A. astorgae the septae between marginal cells are not dilated, and the leaf margins are entire or somewhat sinuous). The distinctions between A. astor-</p><p>Anastrophyllum astorgae, a new species from Chile 167 gae and other species of the genera Anastrophyllopsis and Anastrophyllum listed for Patagonia in Hässel de Menéndez &amp; Rubies (2009) are generalized in the key below. The key is based on the studied specimens of A. astorgae and A. crebrifolium, also the descriptions and illustrations of other species in literature: for Anastrophyllopsis involulifolia (Mont. ex Gottsche, Lindenb. &amp; Nees) Váňa &amp; L. Söderstr. in De Notaris (1855) and Engel (1978), for A. subcomplicata (Lehm. &amp; Lindenb.) Váňa &amp; L. Söderstr. [as Anastrophyllum schismoides (Mont.) Steph.] in Schuster (2002) and Engel &amp; Glenny (2008), for Anastrophyllum ciliatum Steph. in Stephani (1893), Gola (1923, sub A. pampaninii Gola) and Engel (1978), for A. crenulatum R.M. Schust. and Venezuelan A. auritum in Schuster (2002), and for A. semifissum Steph. in Stephani (1911).</p></div>	https://treatment.plazi.org/id/039162299414FFC6A92CFC4FFEF5FA64	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	Mamontov, S. Yu.;Vilnet, A. A.	Mamontov, S. Yu., Vilnet, A. A. (2023): Anastrophyllum astorgae (Anastrophyllaceae, Marchantiophyta), a new species from Chile. Arctoa 32 (2): 158-170, DOI: 10.15298/arctoa.32.13, URL: https://doi.org/10.15298/arctoa.32.13
