ComprehendingCornus: Puzzles and progress in the systematics of the dogwoods

  title={ComprehendingCornus: Puzzles and progress in the systematics of the dogwoods},
  author={Richard H. Eyde},
  journal={The Botanical Review},
  • R. Eyde
  • Published 1 July 1988
  • Biology
  • The Botanical Review
Dogwoods evolved in two main lineages, a red-fruited line in which the inflorescences have basal bracts, and a blue-(or white-)fruited line in which the bracts are rudimentary or lacking. The 15 “red-line” species are mostly well marked, whereas “blue-line” species—numbering roughly 50 if some newer treatments be accepted—are mostly hard to tell apart. Red-line ovules are tenuinucellate, blue-line ovules crassinucellate. Dividing the red line separates cornelian cherries from the showy-bracted… 

Systematics and Leaf Architecture of the Gunneraceae

Cladistic and phenetic analyses of leaf and other morphological characters ofGunnera strongly support monophyly of the genus, with the Saxifragaceae s.str. as the closest sister group. This

The morphology and internal structure of dogwood (Cornus L.) endocarps in the taxonomy and phylogeny of the genus

The calculated similarity coefficients of the endocarps’ qualitative and quantitative characters revealed the highest morphological similarity of endOCarps between DW and BB groups, supporting the phylogenetic relationships based on molecular evidence.

Homologous Fruit Characters in Geographically Separated Genera of Extant and Fossil Torricelliaceae (Apiales)

This work shows that the fruits of these three genera are distinctive in their morphology and anatomy, allowing for identification of fossils to the generic level, and supports the previous recognition of Torricellia from themiddle Eocene of North America and from the middle Eocene to middle Miocene of Europe.

Anatomically preserved fossil cornalean fruits from the Upper Cretaceous of Hokkaido: Eydeia hokkaidoensis gen. et sp. nov.

A new taxon of Cornales is described, Eydeia hokkaidoensis gen. et sp.

The classification and geography of the flowering plants: Dicotyledons of the class Angiospermae

  • R. Thorne
  • Geography, Biology
    The Botanical Review
  • 2008
This latest revision of the classification and geography of the Dicotyledons is necessitated by the plethora of new information that has become available about the classification of the Angiospermae, especially in the currently popular approaches of cladistic, particulate, and molecular taxonomy.

The Phylogenetic Significance of Fruit Structures in the Family Cornaceae of China and Related Taxa

It is indicated that the fruit structures of Cornaceae might provide morphological and anatomical evidence for molecular phylogeny and the number of cell layers of endocarps and the types of crystals afford sound evidence for identifying their relationship.

Floral morphology and morphogenesis in Camptotheca (Nyssaceae), and its systematic significance

Inflorescence and floral characters support a close relationship with Nyssaceae and Mastixiaceae but a distant relationship with Cornus, and corroborate molecular inferences and support a separate family NySSaceae.

Cornalean affinities, phylogenetic significance, and biogeographic implications of Operculifructus infructescences from the Late Cretaceous (Campanian) of Mexico.

Operculifructus provides direct evidence for the occurrence of Grubbiaceae in the Late Cretaceous, much older than previous Eocene evidence.

Cryptic Dioecy in Nyssa Yunnanensis (Nyssaceae), A Critically Endangered Species from Tropical Eastern Asia1

The 37 known trees of N. yunnanensis are likely the remnants of a once more widespread, abundant species that has been heavily impacted by human disturbance, a fate shared with many other threatened Southeast Asian taxa whose continued survival will require dedicated conservation efforts informed by a detailed understanding of population structure and reproductive biology.

Classification and geography of the flowering plants

Thome, Robert F. (Rancho Santa Ana Botanic Garden, Claremont, CA 91711). Classification and geography of the flowering plants. Bot. Rev.58(3): 225–348. 1992.—This treatment of the flowering plants is



Evolution and Systematics of the Onagraceae: Floral Anatomy

Analysis of floral structure in all onagraceous genera-with Lopezia and Ludwigia studied most intensively-indicates that the earliest onagrads were isomerous and diplostemonous and had more than four

The case for keeping Cornus in the broad Linnaean sense

Today, in eastern Europe and in Asia, steadfast splitters view all those as genera-Cornus sensu stricto, Swida, Chamaepericlymenum, Cynoxylon-and make four more from dogwoods that Linnaeus did not know-Afrocrania, Bothrocaryum, Dendrobenthamia, Discocrania-and there are the following reasons for retaining Cornus in its broad sense.


The degree of relationship between these two habitally very distinct species is determined in the light of a comparative anatomical investigation; their position within the family Onagraceae is investigated; and a description of the ontogeny of their bizarre fruiting structures is provided.

Flower Associations of Mimetic Syrphidae (Diptera) in Northern Michigan

The data from northern Michigan presented here concern a group of little studied, high fidelity mimetic Syrphidae that are particularly numerous in the ecotone between the boreal and deciduous forests.

VIII. A Contribution to the Study of the Evolution of the Flower, with special reference to the Hamamelidaceæ, Caprifoliaceæ, and Cornaceæ.

The nucellus of Aucuba, in the formation of a definite layer of parietal tissue, a small epidermal cap, and in subsequent bulk-extension owing to cell-division, approaches the type described by Pechoutre for the Rosaceae.

A revision of the genus Mastixia (Cornaceae)

A revision of the genus in its entire range of distribution is presented, and two new subgenera, Manglesia Matthew (2 species) and Mastixia (II species) are established, based on the arrangement of the first order branches of the inflorescence.

Systematic anatomy of Oceanopapaver, a monotypic genus of the Capparaceae from New Caledonia

Evidence from vegetative anatomy, reproductive morphology, and palynology does not support a relationship of Oceanopapaver with Cistaceae, Cruciferae, Flacourtiaceae, Papaveraceae, and Tiliaceae, but suggests placement of the genus in Capparaceae, while the phylogenetic and functional anatomy of vegetative and reproductive structures is discussed.

General aspects of angiosperm evolution and macrosystematics

It is concluded that pleiomerous flowers with helically arranged parts (corresponding to the Magnolia type, though probably less elaborate), on the basis of recent evidence can still be regarded as the probably earliest floral type in angiosperms.

Proposed new realignments in the angiosperms

Our attempt at putatively phylogenetic classifications of Angiospermae, considering our vast ignorance of more than 120 million years of evolution of the class, must be very tentative and elastic to

Seed plant phylogeny and the origin of angiosperms: An experimental cladistic approach

The results raise the possibility that many features considered key adaptations in the origin and rise of angiosperms were actually inherited from their gymnospermous precursors, and the morphological diversity of Mesozoic anthophytes could provide critical tests of relationships.