Abstract
Morphological features of nutlets of all members of the genus Limnanthes were examined by light and scanning electron microscopy (SEM). Eight distinct nutlet types are recognized on the basis of presence or absence, size, shape, density, and color of tubercles and associated filamentous or globular background structures. Some taxa (e.g., L. macounii, L. bakeri) display only one nutlet type, some (e.g., L. floccosa floccosa) have different types in different populations, and others (e.g., L. alba, L. striata) have two or more types within populations. Four classes of nutlets are designated as subtypes on the basis of their forms varying between the eight types recognized. The relationships among various taxa on the basis of nutlet types are schematically diagrammed and compared with other classification schemes. Results suggest that the proposed details of nutlet morphology should be considered in an identification key. Preliminary evidence indicates that certain highly sculptured (tuberculate) nutlet types with large surface areas occur more often in wetter habitats and that variation in this trait in different Limnanthes species might be adaptively associated with geographical distribution patterns.
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Claims 11
Claim · model-written summary
Eight distinct Limnanthes nutlet types were recognized from their sculptural features.
- Taxon
- Limnanthes
Limnanthest0 - Organ / stage
- nutlete0
- Outcome
- Eight distinct nutlet typese0
- Value
- Eighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eight distinct nutlet types are recognized on the basis of presence or absence, size, shape, density, and color of tubercles and associated filamentous or globular background structures.”
t0“Limnanthes”
Claim · model-written summary
L. macounii displays only one nutlet type.
- Taxon
- L. macounii
Limnanthes macouniie0 - Outcome
- only one nutlet typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some taxa (e.g., L. macounii, L. bakeri) display only one nutlet type”
Claim · model-written summary
L. bakeri displays only one nutlet type.
- Taxon
- L. bakeri
_(7227999424).jpg?width=60)
Limnanthes bakerie0 - Outcome
- only one nutlet typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(7227999424).jpg?width=500)
Verbatim
e0“Some taxa (e.g., L. macounii, L. bakeri) display only one nutlet type”
Claim · model-written summary
L. floccosa floccosa has different nutlet types in different populations.
- Taxon
- L. floccosa floccosa
Limnanthes floccosae0 - Outcome
- different types in different populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some (e.g., L. floccosa floccosa) have different types in different populations”
Claim · model-written summary
L. alba has two or more nutlet types within populations.
- Taxon
- L. albaLimnanthes albae0
- Outcome
- two or more types within populationse0
Verbatim
e0“others (e.g., L. alba, L. striata) have two or more types within populations”
Claim · model-written summary
L. striata has two or more nutlet types within populations.
- Taxon
- L. striata
Limnanthes douglasii subsp. striatae0 - Outcome
- two or more types within populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“others (e.g., L. alba, L. striata) have two or more types within populations”
Claim · model-written summary
Four intermediate classes of Limnanthes nutlets were designated subtypes.
- Taxon
- LimnanthesLimnanthest0
- Outcome
- Four classes of nutlets are designated as subtypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four classes of nutlets are designated as subtypes on the basis of their forms varying between the eight types recognized.”
t0“Limnanthes”
Claim · model-written summary
Relationships among Limnanthes taxa based on nutlet types were diagrammed and compared with other classifications.
- Taxon
- LimnanthesLimnanthest0
- Outcome
- relationships among various taxa on the basis of nutlet typese0
- Comparator
- other classification schemese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relationships among various taxa on the basis of nutlet types are schematically diagrammed and compared with other classification schemes.”
t0“Limnanthes”
Claim · model-written summary
The authors recommend considering the proposed Limnanthes nutlet morphology details in an identification key.
- Taxon
- LimnanthesLimnanthest0
- Outcome
- proposed details of nutlet morphology should be considered in an identification keye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results suggest that the proposed details of nutlet morphology should be considered in an identification key.”
t0“Limnanthes”
Claim · model-written summary
Preliminary evidence suggests highly sculptured Limnanthes nutlets with large surface areas occur more often in wetter habitats.
- Taxon
- LimnanthesLimnanthest0
- Outcome
- occur more oftene0
- Direction
- more oftene0
- Qualifier
- Preliminary evidencee0
- Setting
- wetter habitatse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preliminary evidence indicates that certain highly sculptured (tuberculate) nutlet types with large surface areas occur more often in wetter habitats”
t0“Limnanthes”
Claim · model-written summary
Variation in Limnanthes nutlet sculpture might be adaptively associated with geographic distribution.
- Taxon
- LimnanthesLimnanthese0
- Outcome
- variation in this traite0
- Qualifier
- might be adaptively associatede0
- Setting
- geographical distribution patternse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variation in this trait in different Limnanthes species might be adaptively associated with geographical distribution patterns.”