Abstract
A karyotypic and statistical study was made of samples from three populations of Trillium rugelii Rendle from Rutherford County, North Carolina. The data collected were compared with the karyotypes and statistics for Trillium flexipes Raf. (T. gleasoni Fern.) from western North Carolina and Tennessee, and for five members of the T. erectum L. complex. Trillium rugelii grows sympatrically with T. grandiftorum (Michx.) Salisb. and T. cuneatum Raf., two species which are morphologically dissimilar to it; but it is geographically isolated from T. flexipes and members of the T. erectum complex, the taxa which are morphologically most similar to it. The modal karyotypic comparison and the scatter diagrams correlate to show that this taxon is closely related to T. erectum var. album (Michx.) Pursh, T. simile Gleason, and probably to T. flexipes. There is evidence of distinct karyotypic variability among individual plants in T. rugelii. Although no chromosome types are peculiar to this taxon, there are no plant karyotypes (diploid sets) identical with those for T. rugelii among the seven taxa compared with it. Habit characters make this plant easily identified in the field. Taxonomic recognition for T. rugelii is justified. Further studies are required to determine to which rank it should be assigned.
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Claims 8
Claim · model-written summary
Trillium rugelii is sympatric with T. grandiftorum and T. cuneatum.
- Taxon
- Trillium rugelii
Trillium rugeliie0 - Outcome
- grows sympatrically with T. grandiftorum (Michx.) Salisb. and T. cuneatum Raf.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trillium rugelii grows sympatrically with T. grandiftorum (Michx.) Salisb. and T. cuneatum Raf.”
Claim · model-written summary
Trillium rugelii is geographically isolated from T. flexipes and the T. erectum complex.
- Outcome
- geographically isolated from T. flexipes and members of the T. erectum complexe0
Not reportedTaxon
Verbatim
e0“it is geographically isolated from T. flexipes and members of the T. erectum complex”
Claim · model-written summary
Karyotypes and scatter diagrams indicate close relationship to T. erectum var. album, T. simile, and probably T. flexipes.
- Outcome
- closely related to T. erectum var. album (Michx.) Pursh, T. simile Gleason, and probably to T. flexipese0
- Comparator
- T. erectum var. album (Michx.) Pursh, T. simile Gleason, and probably to T. flexipese0
Not reportedTaxonDirection
Verbatim
e0“this taxon is closely related to T. erectum var. album (Michx.) Pursh, T. simile Gleason, and probably to T. flexipes”
Claim · model-written summary
Individual T. rugelii plants show distinct karyotypic variability.
- Taxon
- T. rugeliiTrillium rugeliie0
- Outcome
- distinct karyotypic variabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There is evidence of distinct karyotypic variability among individual plants in T. rugelii.”
Claim · model-written summary
No chromosome types were peculiar to T. rugelii.
- Outcome
- no chromosome types are peculiar to this taxone0
Not reportedTaxon
Verbatim
e0“no chromosome types are peculiar to this taxon”
Claim · model-written summary
No compared taxon had plant karyotypes identical with T. rugelii.
- Taxon
- T. rugeliiTrillium rugeliie0
- Outcome
- no plant karyotypes (diploid sets) identicale0
- Qualifier
- among the seven taxa compared with ite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there are no plant karyotypes (diploid sets) identical with those for T. rugelii among the seven taxa compared with it”
Claim · model-written summary
Habit characters make T. rugelii readily identifiable in the field.
Not reportedTaxon
Verbatim
e0“Habit characters make this plant easily identified in the field.”
Claim · model-written summary
The authors judge taxonomic recognition of T. rugelii justified.
- Taxon
- T. rugeliiTrillium rugeliie0
- Outcome
- Taxonomic recognition for T. rugeliie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taxonomic recognition for T. rugelii is justified.”