Altitudinal variation in <i>Leptospermum flavescens</i> Sm. (Myrtaceae)

Morrison, David A.

doi:10.1111/j.1442-9993.1984.tb01358.x

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…These facts suggest that elevation and geographical distribution could be indirectly influencing phenotypic variation in these morphological traits. Correlation between morphological traits and elevation and geographical distribution has been reported in other plant groups (Morrison, 1984;Jonas & Geber, 1999;Milla, 2009;Milla & Reich, 2011;Scrivanti et al, 2014). In the S. aphylla complex, the multivariate analyses showed a continuum of variation among the three varieties proposed by Robbiati et al (2014a).…”

Section: Discussionmentioning

confidence: 61%

Phenotypic variation in arid and semi-arid zones of southern South America: the case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)

Robbiati

Amarilla

Antón

et al. 2017

Botanical Journal of the Linnean Society

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Senna series Aphyllae includes xeromorphic shrubs and subshrubs that occur in three different biogeographic subregions in arid and semi-arid habitats of southern South America. The series provides a good opportunity to understand better the relationship among geographical, climatic, and morphological variation in different taxa. Moreover, in this group the specific and varietal delimitation is still problematic due to the high morphological variation within and among taxa. Statistical analyses of climatic and morphological data and geographical distribution were used to understand the patterns of morphological variation among 394 individuals and to clarify the taxonomic delimitation of entities that belong to series Aphyllae. Senna acanthoclada and S. nudicaulis were segregated from each other and from the remaining taxa; the three recognized varieties of the S. aphylla complex were delimited; S. spiniflora was well-delimited and S. crassiramea and S. rigidicaulis were overlapping; S. pachyrrhiza was not differentiated from S. aphylla. Ecological niche modelling showed several areas of contact and a large overlap of suitable conditions for several species. The results of this work revealed that most morphological variability is associated with different environmental conditions. This phenotypic plasticity may be caused by the presence of different environments with climatic factors in the South American Transition Zone, Chaco, and northern region of Central Patagonia province.

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Section: Discussionmentioning

confidence: 61%

Phenotypic variation in arid and semi-arid zones of southern South America: the case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)

Robbiati

Amarilla

Antón

et al. 2017

Botanical Journal of the Linnean Society

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“…It may also occur in the McPherson Range, but this has not been confirmed. Altitudinal variation in morphology has also been reported in the Sydney region for species in several genera, including Leptospermum polygalifolium and Leptospermum morrisonii (Myrtaceae; Morrison 1984), and Banksia marginata, Hakea dactyloides and Hakea teretifolia (Proteaceae; D. Keith and R. Bradstock, pers. comm.…”

Section: Morphological Form Parent-offspring Relationship Interactionmentioning

confidence: 76%

Patterns of morphological variation within Acacia suaveolens (Mimosaceae)

Morrison¹,

Rupp²

1995

Aust. Systematic Bot.

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Acacia suaveolens shows a considerable degree of morphological variability throughout its range in eastern Australia. Multivariate morphometric analyses of data from 375 herbarium specimens suggest that there are five polythetically distinct forms within this species. The morphological boundaries between these forms are somewhat arbitrary but are closely related to a number of environmental variables. Discrimination between these forms is possible only on the basis of a combination of attributes. In all cases, the distinctions between the forms are maintained in offspring plants grown under controlled environmental conditions, indicating that these morphological differences are genetically fixed. These forms are taxonomically treated as new subspecies. Apart from the typical form (subsp. suaveolens), which is widespread, the following morphological forms have been identified: a form with narrower phyllodes, restricted to the Holocene sand dunes in the Myall Lakes region (subsp. myallensis D. Morrison & A.J. Rupp); a form with wider phyllodes and longer pulvinus, and longer and thicker seeds, occurring in areas with an altitude above 300 m (subsp. montana D. Morrison & A.J. Rupp); a form with wider phyllodes, more flower heads per raceme, thicker seeds, and a small rootstock, restricted to the Grampians region (subsp. grampianensis D. Morrison & A.J. Rupp); and a form with shorter phyllodes, shorter internodes, shorter fruits, thicker seeds and a prostrate habit, occurring on windswept coastal headlands (subsp. prostrata D. Morrison & A.J. Rupp).

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Altitudinal variation in Leptospermum flavescens Sm. (Myrtaceae)

Cited by 2 publications

References 3 publications

Phenotypic variation in arid and semi-arid zones of southern South America: the case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)

Phenotypic variation in arid and semi-arid zones of southern South America: the case of Senna series Aphyllae (Fabaceae, Caesalpinioideae)

Patterns of morphological variation within Acacia suaveolens (Mimosaceae)

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