By organism › Green plants › Cupressaceae › Metasequoia

Observationobservedoriginal resultbasis n/a

Claim · model-written summary

The notulae present new country and area records and taxonomic and distributional considerations for taxa in 38 genera.

Taxon: Alkanna, Amaranthus, Cardamine, Carex, Celastrus, Centaurea, Chenopodium, Cyperus, Danthonia, Deschampsia, Dittrichia, Dodonaea, Euphorbia, Galium, Grevillea, Hieracium, Ibicella, Kalopanax, Metasequoia, Moluccella, Orobanche, Paspalum, Passiflora, Phelipanche, Phragmites, Portulaca, Potamogeton, Ribes, Ruellia, Salicornia, Salsola, Sesamum, Setaria, Sonchus, Thladiantha, Verbesina, Veronica and ViciaMetasequoiaChenopodiumAmaranthusPortulacaPassifloraRibesViciaEuphorbiaVeronicaSesamumSetariaCyperusPotamogetonCarexRuelliaDeschampsiaPhragmitesGaliumOrobancheCentaureaVerbesinaDanthoniaDodonaeaSalicorniaKalopanaxSonchusCardamineDittrichiaGrevilleaCelastrusHieraciumPaspalumSalsolaIbicellaThladianthaPhelipancheAlkannaMoluccellae1
Outcome: new country and area recordse1

Verbatim

e1
“It includes new country and area records and taxonomic and distributional considerations for taxa in Alkanna, Amaranthus, Cardamine, Carex, Celastrus, Centaurea, Chenopodium, Cyperus, Danthonia, Deschampsia, Dittrichia, Dodonaea, Euphorbia, Galium, Grevillea, Hieracium, Ibicella, Kalopanax, Metasequoia, Moluccella, Orobanche, Paspalum, Passiflora, Phelipanche, Phragmites, Portulaca, Potamogeton, Ribes, Ruellia, Salic…” Show full quote
✓ located verbatim in the source · abstract, characters 623–1128

Title

Euro+Med-Checklist Notulae, 18

Raab-Straube, Eckhard von; Raus, Thomas Refubium (Universitätsbibliothek der Freien Universität Berlin) 2025. doi:10.17169/refubium-51111

Other claims from this paper (2)

Observation New combinations were made in the genus Bromus.
Observation A replacement name was proposed in the genus Lysimachia.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Wetland Metasequoia biotopes had high perception despite moderate NPP.

Taxon: MetasequoiaMetasequoiae0
Outcome: perception scorese0
Direction: highe0
Qualifier: moderate NPPe0

Verbatim

e0
“Wetland Metasequoia biotopes (B-PO-D, GE-C-D, GE-C-E) displayed high perception scores despite moderate NPP”
✓ located verbatim in the source · abstract, characters 1413–1520

Title

A study on perception of urban green space carbon sequestration based on biotope classification: a case study of the Urban Forest in Shanghai

Fangfei Xu; Qi Yan; Zhenhui Ding Trees Forests and People 2025. doi:10.1016/j.tfp.2025.101047

Other claims from this paper (3)

Observation Closed evergreen tree biotopes had high NPP and perception scores.
Observation Bamboo biotopes had high NPP and low perception.
Association Green view index and simple ratio positively influenced perception.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Living and fossil Metasequoia distributions largely remained at northern upper latitudes.

Taxon: MetasequoiaMetasequoiae0
Outcome: living and fossil distributionse0
Setting: upper latitudes of the northern hemispheree0

Verbatim

e0
“The living and fossil distributions of Metasequoia largely remain in the upper latitudes of the northern hemisphere.”
✓ located verbatim in the source · abstract, characters 983–1099

Title

Where did they come from, where did they go? Niche conservatism in woody and herbaceous plants and implications for plant‐based paleoclimatic reconstructions

Zack J. Quirk; Selena Y. Smith; R. Paul Acosta; et al. American Journal of Botany 2024. doi:10.1002/ajb2.16426

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Metasequoia occupied a more consistent climatic niche across those intervals.

Taxon: MetasequoiaMetasequoiae0
Outcome: more consistent climatic nichee0
Qualifier: over the same time intervalse0

Verbatim

e0
“Metasequoia occupied a more consistent climatic niche over the same time intervals.”
✓ located verbatim in the source · abstract, characters 1241–1324

Title

Where did they come from, where did they go? Niche conservatism in woody and herbaceous plants and implications for plant‐based paleoclimatic reconstructions

Zack J. Quirk; Selena Y. Smith; R. Paul Acosta; et al. American Journal of Botany 2024. doi:10.1002/ajb2.16426

Other claims from this paper (6)

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors consider Metasequoia more appropriate for paleoclimate reconstruction.

Taxon: MetasequoiaMetasequoiae0
Outcome: more appropriate for these reconstructionse0

Verbatim

e0
“we argue that the consistent climatic niche of Metasequoia is more appropriate for these reconstructions.”
✓ located verbatim in the source · abstract, characters 1621–1726

Title

Where did they come from, where did they go? Niche conservatism in woody and herbaceous plants and implications for plant‐based paleoclimatic reconstructions

Zack J. Quirk; Selena Y. Smith; R. Paul Acosta; et al. American Journal of Botany 2024. doi:10.1002/ajb2.16426

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Early decay of Metasequoia leaf tissue produced an approximately 1‰ negative δ13C shift.

Taxon: MetasequoiaMetasequoiae0
Outcome: δ13Ce0
Direction: negative shifte0
Value: ~ 1‰e0
Qualifier: early decaye0

Verbatim

e0
“a ~ 1‰ negative shift of δ13C during early decay of Metasequoia leaf tissues”
✓ located verbatim in the source · abstract, characters 1154–1230

Title

Constraining conifer physiological parameters in leaf gas-exchange models for ancient CO2 reconstruction

Jia-Qi Liang; Qin Leng; Daianne F. Höfig; et al. Global and Planetary Change 2022. doi:10.1016/j.gloplacha.2022.103737

Other claims from this paper (16)

Method / resource The modified cleared leaf method allowed accurate stomatal-size measurement.
Observation Pore length was the most variable stomatal size parameter.
Method / resource Whole-leaf stomatal density could be estimated accurately from a representative area in the middle of a leaf.
Observation Within-leaf and between-leaf δ13C variation was only slightly above analytical error.
Association The measured pore-length range had a major influence on model-estimated CO2.
Association The measured whole-leaf stomatal-density range had a major influence on model-estimated CO2.
Recommendation The authors recommend using the modified cleared leaf method to measure stomatal size and density in the middle of leaves and branchlets.
Recommendation The authors recommend scaling pore length from guard cell length.
Recommendation The authors suggest correcting carbon isotope fractionation when tissue decay and fossil preservation information is available.
Method / resource Franks model CO2 estimates from 2004 modern leaves were 346 ppm versus a 378 ppm target.
Method / resource Franks model CO2 estimates from 2020 modern leaves were 416 ppm versus a 414 ppm target.
Method / resource Stomatal frequency methods underestimated modern CO2 at 285 ppm.
Method / resource Stomatal frequency methods underestimated modern CO2 at 341 ppm.
Method / resource Reconstructed CO2 for Metasequoia from the middle Miocene Clarkia deposit was 505 ppm, comparable with published results.
Method / resource Reconstructed CO2 for Taxodium from the middle Miocene Clarkia deposit was 507 ppm, comparable with published results.
Method / resource The improved leaf-clearing and stomatal-counting methods are expected to improve Franks model CO2 reconstruction performance.

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Reconstructed CO2 for Metasequoia from the middle Miocene Clarkia deposit was 505 ppm, comparable with published results.

Taxon: MetasequoiaMetasequoiae0
Outcome: Reconstructed CO2e0
Value: 505e0
Comparator: published resultse0
Setting: middle Miocene Clarkia deposite0

Verbatim

e0
“Reconstructed CO2 from the middle Miocene Clarkia deposit (505 and 507 ppm for Metasequoia and Taxodium) are comparable with published results”
✓ located verbatim in the source · abstract, characters 2132–2274

Title

Constraining conifer physiological parameters in leaf gas-exchange models for ancient CO2 reconstruction

Jia-Qi Liang; Qin Leng; Daianne F. Höfig; et al. Global and Planetary Change 2022. doi:10.1016/j.gloplacha.2022.103737

Other claims from this paper (16)

Method / resource The modified cleared leaf method allowed accurate stomatal-size measurement.
Observation Pore length was the most variable stomatal size parameter.
Method / resource Whole-leaf stomatal density could be estimated accurately from a representative area in the middle of a leaf.
Observation Within-leaf and between-leaf δ13C variation was only slightly above analytical error.
Observation Early decay of Metasequoia leaf tissue produced an approximately 1‰ negative δ13C shift.
Association The measured pore-length range had a major influence on model-estimated CO2.
Association The measured whole-leaf stomatal-density range had a major influence on model-estimated CO2.
Recommendation The authors recommend using the modified cleared leaf method to measure stomatal size and density in the middle of leaves and branchlets.
Recommendation The authors recommend scaling pore length from guard cell length.
Recommendation The authors suggest correcting carbon isotope fractionation when tissue decay and fossil preservation information is available.
Method / resource Franks model CO2 estimates from 2004 modern leaves were 346 ppm versus a 378 ppm target.
Method / resource Franks model CO2 estimates from 2020 modern leaves were 416 ppm versus a 414 ppm target.
Method / resource Stomatal frequency methods underestimated modern CO2 at 285 ppm.
Method / resource Stomatal frequency methods underestimated modern CO2 at 341 ppm.
Method / resource Reconstructed CO2 for Taxodium from the middle Miocene Clarkia deposit was 507 ppm, comparable with published results.
Method / resource The improved leaf-clearing and stomatal-counting methods are expected to improve Franks model CO2 reconstruction performance.

Observationauthor interpretationreview summarybasis n/a

Claim · model-written summary

Metasequoia represents a relic conifer type with taxonomic and phytogeographic significance.

Taxon: MetasequoiaMetasequoiat0
Outcome: unique type of relic conifere0

Verbatim

e0
“This new finding thus reveals an unique type of relic conifer, contribut ing substantially to taxonomy, morphology, and j)hytogeography.”
✓ located verbatim in the source · abstract, characters 1201–1337

t0
“METASEQUOIA”
✓ located verbatim in the source · title, characters 0–11

Title

METASEQUOIA, A LIVING FOSSIL

Hui-Lin Li 2016

Other claims from this paper (2)

Observation The discovery calls for revision of Tertiary botany.
Observation The discovery made a new tree available for cultivation.

Observationauthor interpretationreview summarybasis n/a

Claim · model-written summary

The discovery calls for revision of Tertiary botany.

Taxon: MetasequoiaMetasequoiat0
Outcome: revision of our knowledge on Tertiary botanye0

Verbatim

e0
“it calls for considerable revision of our knowledge on Tertiary botany”
✓ located verbatim in the source · abstract, characters 1390–1460

t0
“METASEQUOIA”
✓ located verbatim in the source · title, characters 0–11

Title

METASEQUOIA, A LIVING FOSSIL

Hui-Lin Li 2016

Other claims from this paper (2)

Observationauthor interpretationreview summarybasis n/a

Claim · model-written summary

The discovery made a new tree available for cultivation.

Taxon: MetasequoiaMetasequoiat0
Outcome: new tree for cultivatione0

Verbatim

e0
“A new tree for cultivation is also made available to dendrology and horticulture.”
✓ located verbatim in the source · abstract, characters 1462–1543

t0
“METASEQUOIA”
✓ located verbatim in the source · title, characters 0–11

Title

METASEQUOIA, A LIVING FOSSIL

Hui-Lin Li 2016

Other claims from this paper (2)

Metasequoia 83 claims

83 claims