On the terminology, origins and functions of caveate pollen in compositae

Blackmore, Stephen; Helvoort, H.A.M. van; Punt, W.

doi:10.1016/0034-6667(84)90001-0

Cited by 23 publications

(9 citation statements)

References 21 publications

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“…5. The exine with the anthemoid pattern, not very specialized in terms of phylogeny (Bolick, 1978;Blackmore et al, 1984), can be regarded as a primitive character of the group, which is in agreement with other morphological and molecular features.…”

Section: Discussionmentioning

confidence: 83%

“…Pollen with Gongylolepis and Wunderlichia exine types is similar to that of some Cardueae pollen with long and welldeveloped spines (for comparisons, see Tormo-Molina & Ubera-Jiménez, 1990, 1995. By contrast, the Mutisia exine type is similar to that of some species of Centaurea (Cardueae tribe), which possesses ecaveate and microechinate pollen (Wagenitz, 1955;Parra, 1969;Dimon, 1971;Nordenstam & El-Ghazaly, 1977;Blackmore, van Helvoort & Punt, 1984;Pehlivan, 1995;Villodre & García-Jacas, 2000).…”

Section: Key To Pollen Types and Subtypes In Guyana Highland-centred mentioning

confidence: 88%

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Taxonomic significance of pollen types in the Guyana Highland-centred composite genera of Mutisioideae (Asteraceae)

Tellerı́a

2008

Botan J Linn Soc

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Section: Discussionmentioning

confidence: 83%

Section: Key To Pollen Types and Subtypes In Guyana Highland-centred mentioning

confidence: 88%

Taxonomic significance of pollen types in the Guyana Highland-centred composite genera of Mutisioideae (Asteraceae)

Tellerı́a

2008

Botan J Linn Soc

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“…space between exine layers above the foot layer, Blackmore et al, 1984) within basal Asteraceae is limited to some genera of the subfamily Barnadesioideae (Urtubey and Tellería, 1998;Zao et al, 2000). We observed full cavea (i.e., without any columellae spanning the space above the foot layer) between apertures or between depressions and apertures in Arnaldoa (Plate I, 2, Fig.…”

Section: Caveamentioning

confidence: 82%

“…After that, they were washed for 30 min in distilled water, dehydrated in an ethanol series and finally embedded in Spurr's low viscosity epoxy resin (Spurr, 1979 number of layers and their constituent elements). Concerning the terminology, in this paper follows that of Skvarla et al (1977), Bolick, (1991), and Blackmore et al (1984Blackmore et al ( , 2010.…”

Section: Accepted Manuscriptmentioning

confidence: 92%

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Evolutionary significance of exine ultrastructure in the subfamily Barnadesioideae (Asteraceae) in the light of molecular phylogenetics

Tellerı́a

Palazzesi

Barreda

2015

Review of Palaeobotany and Palynology

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Plesiomorphic and apomorphic pollen structure characteristics of anthemideae (Asteroideae: Asteraceae)

Vezey

Watson

Skvarla

et al. 1994

American J of Botany

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Anthemideae (Asteroideae: Asteraceae) pollen grains have basal columellae, a structural type called “anthemoid” in earlier publications. To survey structure variation in Anthemideae pollen, we examined freeze‐sectioned grains from 45 species within 23 representative genera using scanning electron microscopy (SEM). From resulting data and a literature review, we concluded that: 1) pollen of Anthemideae taxa is qualitatively identical except for Ursinia (grains essentially lack basal columellae) and the Artemisia group (branches of basal columellae are complex and interwoven); 2) the double tectum (a term introduced in this study) is a synapomorphy of Asteroideae and plesiomorphic in Anthemideae; 3) apomorphies of Anthemideae grains include large basal columellae, a thick foot layer, and absence of internal foramina; and 4) Anthemideae pollen is qualitatively different from similar pollen in Lactucoideae, a distinction we recognized by restricting “anthemoid” to Anthemideae grains. Ursinia grains have occasional basal columellae and features resembling rolled‐up columellae; we consider these vestiges of a reversal to the plesiomorphic condition. To assess quantitative structural variation, 2,200 image‐analysis measurements were taken from 73 SEM micrographs. Intrageneric variation was analyzed by standard deviation, and intergeneric variation by principal components analysis. Compared to other Anthemideae taxa, the structural elements of Artemisia grains have reduced dimensions and variability. Otherwise, structural radiation of Anthemideae pollen has produced a phenetic continuum.

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On the terminology, origins and functions of caveate pollen in compositae

Cited by 23 publications

References 21 publications

Taxonomic significance of pollen types in the Guyana Highland-centred composite genera of Mutisioideae (Asteraceae)

Taxonomic significance of pollen types in the Guyana Highland-centred composite genera of Mutisioideae (Asteraceae)

Evolutionary significance of exine ultrastructure in the subfamily Barnadesioideae (Asteraceae) in the light of molecular phylogenetics

Plesiomorphic and apomorphic pollen structure characteristics of anthemideae (Asteroideae: Asteraceae)

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