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12 results for “Orthotrichum”
Herbarium specimen image of Orthotrichum spiculatum F.Lara, Garilleti & Mazimpaka, part of the collection of Natural History Museum London
Part of a training dataset of scanned herbarium specimens. The data paper and a summary landing page will be published on Zenodo as it gets published.<br><br>Content of this deposition:<br><br>- A JSON-LD datafile listing the label data associated with this herbarium specimen. The Darwin and Dublin Core data standards are used for most values.<br>- A JPEG image file of the scanned herbarium sheet.<br>- A lossless TIFF image from which the JPEG image has been derived.
FIG. 3 in New data on Orthotrichum gigantosporum Lewinsky (Orthotrichaceae, Bryophyta), a widespread northern Andean-Patagonian endemic moss
FIG. 3. — Orthotrichum gigantosporum Lewinsky: A, peristome showing the endostome in first plane, note the teeth pair on left joined by the tip; B, detail of the exothecium with the short exothecial bands shining in polarized light; C, operculum; D, spores; E. upper and lateral view of stomata. A, B, E, from Garilleti 2016- 198a; C, from Lara s.n. 30-12-2005; D, from Garilleti 2016-236g. Scale bars: A-C, 50 µm; D, E, 30 µm.
FIG. 2 in New data on Orthotrichum gigantosporum Lewinsky (Orthotrichaceae, Bryophyta), a widespread northern Andean-Patagonian endemic moss
FIG. 2. — Orthotrichum gigantosporum Lewinsky: A, habit; B, mature capsules with exostome teeth both in pairs and divided, compare with the peristome in E; C, calyptra; D, mature operculated capsule; E, mature capsule with exostome teeth completely divided in 16; F, vegetative leaf; G, setae of two capsules showing the vaginula hairs protruding from the perichaetial leaves; H, operculum beginning its dehiscence from the capsule; I, vegetative leaf base; J, apicule of a single row of cells in a vegetative leaf. A-C, E, H, from Garilleti 2016-199a; D, G, I, from Garilleti 2016-198a; F, J, from Garilleti 2016-177. Scales bars: A, 1 mm; B-E, G, 0.5 mm; F, 0.2 mm; H, 0.25 mm; I, 100 µm; J, 50 µm.
FIG. 1 in New data on Orthotrichum gigantosporum Lewinsky (Orthotrichaceae, Bryophyta), a widespread northern Andean-Patagonian endemic moss
FIG. 1. — Orthotrichum gigantosporum Lewinsky: known distribution superimposed on a KÖppen-Geiger climate map. Previous bibliographic records and other studied localities are indicated.
Measurements of heavy metals in the moss Orthotrichum lyellii collected using community science in the Duwamish Valley, Seattle, Washington, U.S.A.
<p>Heavy metals concentrations often vary at small spatial scales not captured by air monitoring networks, with implications for environmental justice in industrial-adjacent communities. Pollutants measured in moss tissues are commonly used as a screening tool to guide use of more expensive resources, like air monitors. We piloted a community science approach, engaging over 55 people from nine institutions, to map heavy metals using moss in two industrial-adjacent neighborhoods. Local youth led sampling of the moss <em>Orthotrichum lyellii</em> from trees across a 250×250-m sampling grid (n = 79). We compared their data with expert-collected samples (n = 19) using Principal Components Analysis and Procrustes Analysis. We mapped 21 chemical elements measured in moss, focusing on 6 toxic 'priority' metals: arsenic, cadmium, chromium, cobalt, lead, and nickel. We compared local data, using t-tests and boxplots, with two 'reference datasets' of <em>O. lyellii</em> collected in Portland, Oregon, and in Seattle City Parks. We also use Principal Components Analysis to describe major gradients in metals in the study area. Our data submission includes two R scripts and four datasets of heavy metals in moss, including the two reference datasets, which will enable replication of our analyses as well as novel analyses.</p>
Measurements of heavy metals in the moss Orthotrichum lyellii collected using community science in the Duwamish Valley, Seattle, Washington, U.S.A.
Open the record for dataset details and reuse information.
Figure 5 in Orthotrichum dentatum T.Kiebacher & Lüth sp. nov. (Orthotrichaceae)
Figure 5 Scanning electron microscopy images of Orthotrichum dentatum T.Kiebacher & Lüth. (A) Shoot with capsule. (B) Shoot with calyptra. (C) Capsule mouth and peristome. (D) Prostome remains (indicated by the arrows). (E) Smooth surface of the primary peristome layer (PPL) of an exostome pair of teeth. (F) Endostome segment with smooth PPL. (G) Endostome segment with smooth inner peristome layer (IPL). (H) Ornamentation of the outer peristome layer (OPL) of an exostome pair of teeth. (I) Detail of the basal exostome OPL with papillae on transversal ridges. (J) Detail of the ornamentation of the median and apical exostome OPL with longitudinal, transversal, and radial ridges. (A–F) From holotype; (G–J) T. Kiebacher 675.
Figure 4 in Orthotrichum dentatum T.Kiebacher & Lüth sp. nov. (Orthotrichaceae)
Figure 4 Morphological diagnostic characters of Orthotrichum dentatum T.Kiebacher & Lüth. (A) T. Kiebacher 705; (B) T. Kiebacher 704; (C) T. Kiebacher 782; (D) T. Kiebacher 711; (E) T. Kiebacher 716.
Figure 3 Orthotrichum dentatum T in Orthotrichum dentatum T.Kiebacher & Lüth sp. nov. (Orthotrichaceae)
Figure 3 Orthotrichum dentatum T.Kiebacher & Lüth. (A) Habit, dry. (B) Shoot, wet. (C) Stem section. (D.1) Median, (D.2) upper and (D.3) perichaetial leaves. (E) Decurrent leaf base of (E.1) median and (E.2) upper leaf. (F) Axillary hairs. (G) Leaf apices of (G.1) upper leaves, (G.2) leaves from a male branch with long apiculi. (H) Basal leaf cells. (I) Basal marginal leaf cells. (J) Upper leaf cells. (K) Leaf apex with gemmae formation. (L) Gemmae. (M) Calyptra. (N) Calyptra hairs. (O) Capsule, wet and dry. (P.1) Upper, (P.2) median, and (P.3) lower stoma. (Q) Uppermost part of capsule with exothetical cells, base of exostome teeth and prostome remains. (R) Peristome, internal view. (S) Endostome segments. Scales: (A, B, D, M, O) 500 μm; (C, E, F, G, K, L, N) 100 μm; (P, Q, R, S) 50 μm; (H, I, J) 20 μm. (A–F, G.1, H –K, O–R, S.1) From holotype; (G.2, L) T. Kiebacher 716; (M, N) T. Kiebacher 782; (S.2) T. Kiebacher 986.
Figure 6 in Orthotrichum dentatum T.Kiebacher & Lüth sp. nov. (Orthotrichaceae)
Figure 6 Known distribution of Orthotrichum dentatum T.Kiebacher & Lüth in the Italian and Swiss Alps. The localities are cited in Appendices 1 and 2. USGS EROS Data Center; ESRI: ArcWorld Supplement and Data Solutions, B.V.
Figure 1 Orthotrichum dentatum T in Orthotrichum dentatum T.Kiebacher & Lüth sp. nov. (Orthotrichaceae)
Figure 1 Orthotrichum dentatum T.Kiebacher & Lüth in southern Switzerland. (A) Lime tree (Tilia sp.) where O. dentatum was found for the first time in Switzerland. (B) Orthotrichum dentatum together with O. schimperi Hammar on the bark of the lime tree. The tuft in the front right position is O. dentatum and the tuft in the back left position is O. schimperi.
Figure 2 in Orthotrichum dentatum T.Kiebacher & Lüth sp. nov. (Orthotrichaceae)
Figure 2 Dry tuft of Orthotrichum dentatum T.Kiebacher & Lüth with the characteristic straw coloured, hairy calyptrae and strongly ribbed capsules with reflexed, pale exostome teeth. M. Lüth 8009.
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