Comparative Pollen Morphology of the American Myristicaceous Genera Otoba, Iryanthera, and Osteophloeum

Walker, James W. St. G.; Walker, Audrey G.

doi:10.2307/2443239

Cited by 10 publications

(6 citation statements)

References 2 publications

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“…Thickness ratio estimated without prominent spines when these occur. The estimates of Walker & Walker (1979, 1980, 1981, 1983; expressed as a percentage of total nexine thickness) are always concordant with our rough estimates, except for Mauloutchia parvifolia , where we concluded that the TEM section of Walker & Walker (1981) is not reliable (see notes on infratectum).…”

Section: Appendix a Morphological Data Setsupporting

confidence: 83%

“…comm., for Canellaceae). Primary source of data for Myristicaceae is the comprehensive SEM and TEM survey by Walker & Walker of the American (1979, 1983), African (1980), and Malagasy (1981) genera, complemented by our own SEM survey of Staudtia , the Asian genera, and the Malagasy genera (including species not examined by Walker & Walker, 1981). Additional, complementary data found in Wodehouse (in Smith, 1937: 397–402), Canright (1963), Walker (1974), Siddiqi & Wilson (1975a), Straka & Friedrich (1988), Tissot, Chikhi & Nayar (1994), Sampson (2000) and J‐M.…”

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

“…DE‐62. Measures for Myristicaceae from Wodehouse (in Smith, 1937: 397–402), Walker & Walker (1979, 1980, 1981, 1983), Straka & Friedrich (1988) and Tissot et al . (1994).…”

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

“…Similarly, the unusual intectate pollen of Horsfieldia sinclairii figured by Walker (1974; as H. erubescens ) is assumed to be autapomorphic (though it may be compared to Knema laurina ). The continuous face in Otoba (Walker & Walker, 1983) is the only example so far in Myristicaceae of a smooth, continuous tectum without microperforations (unlike Brochoneura and Staudtia ); because of the very different sculpture of the proximal and distal hemispheres, we have scored Otoba as (0/1). The continuous microperforate tectum in Staudtia tends somewhat towards a very densely rugulate condition, from which it may have originated.…”

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

“…Ordered. Myristicaceae based on Walker & Walker (1979, 1980, 1981, 1983) and Sampson (2000) for Myristica fragrans .…”

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

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Phylogenetic analysis of Magnoliales and Myristicaceae based on multiple data sets: implications for character evolution

Sauquet

Doyle

Scharaschkin

et al. 2003

Botanical Journal of the Linnean Society

138

133

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Magnoliales, consisting of six families of tropical to warm‐temperate woody angiosperms, were long considered the most archaic order of flowering plants, but molecular analyses nest them among other eumagnoliids. Based on separate and combined analyses of a morphological matrix (115 characters) and multiple molecular data sets (seven variable chloroplast loci and five more conserved genes; 14 536 aligned nucleotides), phylogenetic relationships were investigated simultaneously within Magnoliales and Myristicaceae, using Laurales, Winterales, and Piperales as outgroups. Despite apparent conflicts among data sets, parsimony and maximum likelihood analyses of combined data converged towards a fully resolved and well‐supported topology, consistent with higher‐level molecular analyses except for the position of Magnoliaceae: Myristicaceae + (Magnoliaceae + ((Degeneria+Galbulimima) + (Eupomatia+ Annonaceae))). Based on these results, we discuss morphological evolution in Magnoliales and show that several supposedly plesiomorphic traits are synapomorphies of Magnoliineae, the sister group of Myristicaceae (e.g. laminar stamens). Relationships within Annonaceae are also resolved with strong support (Anaxagorea basal, then ambavioids). In contrast, resolution of relationships within Myristicaceae is difficult and still incomplete, due to a very low level of molecular divergence within the family and a long stem lineage. However, our data provide good evidence that Mauloutchia is nested among other Afro‐Malagasy genera, contradicting the view that its androecium and pollen are plesiomorphic © 2003 The Linnean Society of London, Botanical Journal of the Linnean Society, 2003, 142, 125–186.

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Section: Appendix a Morphological Data Setsupporting

confidence: 83%

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

“…DE‐62. Measures for Myristicaceae from Wodehouse (in Smith, 1937: 397–402), Walker & Walker (1979, 1980, 1981, 1983), Straka & Friedrich (1988) and Tissot et al . (1994).…”

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

“…Ordered. Myristicaceae based on Walker & Walker (1979, 1980, 1981, 1983) and Sampson (2000) for Myristica fragrans .…”

Section: Appendix a Morphological Data Setmentioning

confidence: 99%

See 3 more Smart Citations

Phylogenetic analysis of Magnoliales and Myristicaceae based on multiple data sets: implications for character evolution

Sauquet

Doyle

Scharaschkin

et al. 2003

Botanical Journal of the Linnean Society

138

133

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Floral Development in Myristica (Myristicaceae)

Armstrong

Tucker

1986

American J of Botany

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Myristica fragrans and M. malabarica are dioecious. Both staminate and pistillate plants produce axillary flowering structures. Each pistillate flower is solitary, borne terminally on a short, second‐order shoot that bears a pair of ephemeral bracts. Each staminate inflorescence similarly produces a terminal flower and, usually, a third‐order, racemose axis in the axil of each pair of bracts. Each flower on these indeterminate axes is in the axil of a bract. On the abaxial side immediately below the perianth, each flower has a bracteole, which is produced by the floral apex. Three tepal primordia are initiated on the margins of the floral apex in an acyclic pattern. Subsequent intercalary growth produces a perianth tube. Alternate with the tepals, three anther primordia arise on the margins of a broadened floral apex in an acyclic or helical pattern. Usually two more anther primordia arise adjacent to each of the first three primordia, producing a total of nine primordia. At this stage the floral apex begins to lose its meristematic appearance, but the residuum persists. Intercalary growth below the floral apex produces a columnar receptacle. The anther primordia remain adnate to the receptacle and grow longitudinally as the receptacle elongates. Each primordium develops into an anther with two pairs of septate, elongate microsporangia. In pistillate flowers, a carpel primordium encircles the floral apex eventually producing an ascidiate carpel with a cleft on the oblique apex and upper adaxial wall. The floral ontogeny supports the morphological interpretation of myristicaceous flowers as trimerous with either four‐sporangiate anthers or monocarpellate pistils.

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Class Magnoliopsida (Dicotyledons)

2009

Flowering Plants

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Comparative Pollen Morphology of the American Myristicaceous Genera Otoba, Iryanthera, and Osteophloeum

Cited by 10 publications

References 2 publications

Phylogenetic analysis of Magnoliales and Myristicaceae based on multiple data sets: implications for character evolution

Phylogenetic analysis of Magnoliales and Myristicaceae based on multiple data sets: implications for character evolution

Floral Development in Myristica (Myristicaceae)

Class Magnoliopsida (Dicotyledons)

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