Abstract
Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott, newly discovered in 2021, differ in several ways from what is generally accepted as ‘normal’ for liverworts. The seta is chlorophyllose, slow growing and persists after spore dispersal. While in growth the sporophyte is positively phototropic, and responsive to changes in light orientation on timescales of hours. There is some evidence the seta goes into senescence before expiring. The opened capsule valves are capable of closing in adverse weather and subsequently re-opening under dry conditions. These discoveries call for some revision of the assumption that all liverwort capsule valves are mere passive actors in the life of sporophytes once dehisced.
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Claims 8
Claim · model-written summary
Treubia tasmanica sporophytes differed from the accepted normal liverwort pattern.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Outcome
- differ in several wayse0
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott, newly discovered in 2021, differ in several ways from what is generally accepted as ‘normal’ for liverworts”
Claim · model-written summary
The seta is chlorophyllose.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- setae1
- Outcome
- chlorophyllosee1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“The seta is chlorophyllose, slow growing and persists after spore dispersal”
Claim · model-written summary
The seta grows slowly.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- setae1
- Outcome
- slow growinge1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“The seta is chlorophyllose, slow growing and persists after spore dispersal”
Claim · model-written summary
The seta persists after spore dispersal.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- setae1
- Outcome
- persists after spore dispersale1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“The seta is chlorophyllose, slow growing and persists after spore dispersal”
Claim · model-written summary
Growing sporophytes are positively phototropic and respond within hours to changes in light orientation.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- sporophytee1
- Outcome
- positively phototropic, and responsive to changes in light orientatione1
- Qualifier
- timescales of hourse1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“While in growth the sporophyte is positively phototropic, and responsive to changes in light orientation on timescales of hours”
Claim · model-written summary
There is some evidence of seta senescence before death.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- setae1
- Outcome
- goes into senescence before expiringe1
- Qualifier
- some evidencee1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“There is some evidence the seta goes into senescence before expiring”
Claim · model-written summary
Opened capsule valves close in adverse weather.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- opened capsule valvese1
- Outcome
- closing in adverse weathere1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“The opened capsule valves are capable of closing in adverse weather and subsequently re-opening under dry conditions”
Claim · model-written summary
Opened capsule valves reopen under dry conditions.
- Taxon
- Treubia tasmanicaTreubia tasmanicae0
- Organ / stage
- opened capsule valvese1
- Outcome
- re-opening under dry conditionse1
Not reportedDirection
Verbatim
e0“Sporophytes of Treubia tasmanica R.M.Schust. & G.A.M.Scott”
e1“The opened capsule valves are capable of closing in adverse weather and subsequently re-opening under dry conditions”