The African Genus Tricalysia A. Rich. (Rubiaceae). 4. A Revision of the Species of Sectio Tricalysia and Sectio Rosea

Robbrecht, Elmar

doi:10.2307/3668317

Cited by 21 publications

(56 citation statements)

References 0 publications

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“…MirabeUa, 1897Lersten, 1975Tabor, 1911Mitra, 1948Lersten, 1975;Thomas 1991 b Pares andRuat, 1953;Lersten, 1975;Majumdar and Pal, 19586 Pares and Ruat, 1953;Lersten, 1975Pares and Ruat, 1953Pares and Ruat, 1953Lersten, 1975Cooke, 1958Lersten, 1975Cooke, 1958Lersten, 1975;Robbrecht, 1975Jayaweera, 1963,1964,1965Lersten, 1975 Homer andLersten, 1968;Van Hove and Kagoyre, 1974;Miller el al., 1983Anderson, 1972Robbrecht, 1978Robbrecht, 1982Robbrecht, , 1983Robbrecht, ,1987Millers a/., 1984Robbrecht, 1975Lersten, 1975Stipule Lersten, 1975Robbrecht, 1981 Lersten, 1975;Thomas and Dave, 1990Lersten, 1975Lersten, 1975Puff, 1983Lersten, 1975Lersten, 1975Aiello, 1979Lersten, 1975Lersten, 1975…”

Section: Interpretationsunclassified

“…Both D and B types of colleters occur in Psychotria , Pavetta, Neorosea and Tricalysia (Lersten, 19746). In addition to these types, Robbrecht (1987) reported winged colleters (Fig. IE (Robbrecht, 1983) the colleters from the inside of the bract are extremely reduced and consist of only a narrow axis of elongated cells emerging from a somewhat wider base built up of isodiametric cells.…”

Section: Morphology and Anatomymentioning

confidence: 99%

“…In addition to the abovementioned points, the present author also disagrees with the stipular theory for the following reasons: (1) In the families Cunoniaceae, Rhizophoraceae and Rubiaceae, colleters are found attached to the inter-or intra-petiolar stipules. Besides the occurrence on the stipule, colleters have also been observed on the petiole (Johansson, 19876), calyculi and calyx (Robbrecht, 1987;Dave et al, 1988), bract, bracteole and corolla (Thomas and Dave, 1989 c). (2) Histochemistry and analysis of the exudate also prove that these multicellular structures are colleters rather than stipules.…”

Section: Interpretationsmentioning

confidence: 99%

“…In addition to these types, Robbrecht (1987) reported winged colleters (Fig. IE (Robbrecht, 1983) the colleters from the inside of the bract are extremely reduced and consist of only a narrow axis of elongated cells emerging from a somewhat wider base built up of isodiametric cells. This extremely reduced morphological type called 'filiform' (Fig.…”

Section: Morphology and Anatomymentioning

confidence: 99%

“…Only in Neorosea and Tricalysia does the standard type of colleters nave irregular bulging epithelial cells. Robbrecht (1983Robbrecht ( , 1987 observed winged and filiform colleters in Tricalysia species. Keeping in mind the evolution theory of colleters put forward by Lersten, the author considers that winged colleters originate from the intermediate type, and the filiform from the standard type.…”

Section: Phylogeny •mentioning

confidence: 99%

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Structural, Functional and Phylogenetic Aspects of the Colleter

1991

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This article surveys the structural, functional and phylogenetic significance of colleters in different dicotyledonous families. Colleters are multicellular secretory structures attached to the stipule, petiole, lamina, bract, bracteole, calyx and corolla. Colleters are grouped into standard (S), dendroid (D) and brush-like (B) types on the basis of their morphology and structure. D and B-type colleters occur in certain members of Rubiaceae that also have bacterial leaf nodules. Besides the normal structure, epithelial hairs, thin-walled subepidermal cells, laticifers and vasculature are present in many colleters of Apocynaceae. It is probable that the colleter functions to protect the developing meristem by secreting a viscous fluid. Exudate of D-type colleters are mucilaginous, providing the substrate necessary for the nutrition of endophytic bacteria.

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Section: Interpretationsunclassified

Section: Morphology and Anatomymentioning

confidence: 99%

Section: Interpretationsmentioning

confidence: 99%

Section: Morphology and Anatomymentioning

confidence: 99%

Section: Phylogeny •mentioning

confidence: 99%

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Structural, Functional and Phylogenetic Aspects of the Colleter

1991

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Phylogeny and classification of the coffee family (Rubiaceae, Gentianales): Overview and outlook

Razafimandimbison,

Rydin

2024

TAXON

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The use of molecular data in phylogenetic reconstruction during more than three decades has greatly improved our understanding of the macroevolutionary history of the coffee family (Rubiaceae) and has provided a solid basis for improvement of its classification. Based on the results of 130 studies, among them most recent phylogenomic works, we present a consensus phylogeny and a robust classification of Rubiaceae that shed light on the evolutionary success of this highly diverse angiosperm family and can serve as a framework for ecological and evolutionary studies. There are more than 14,000 species and about 580 accepted genera of Rubiaceae that are assigned to 71 tribes, of which 68 are classified in two subfamilies (Dialypetalanthoideae with 38 tribes and Rubioideae with 30 tribes). Three tribes (Acranthereae, Coptosapelteae, Luculieae) remain unclassified as to subfamily. Sixty‐three of these 71 tribes are assigned to nine informal alliances (four in Rubioideae and five in Dialypetalanthoideae). These tribes are listed in alphabetical order within their respective alliances. Five tribes, one (Coussareeae) in Rubioideae and four (Airospermeae, Jackieae, Retiniphylleae, Steenisieae) in Dialypetalanthoideae, are excluded from these alliances due to unclear or conflicting phylogenetic positions. Thirty‐six tribes retain their tribal status but receive new generic limits to remedy their previous para‐ or polyphyletic nature. Twenty‐nine tribes not implemented in previous classifications have been added, of which three (Chioneae, Glionnetieae, Temnopterygeae) are newly described here. Basic information on phylogenies, distributions, former classifications, and useful references to previous works are provided for all accepted tribes, and future perspectives are discussed.

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