Surface wax, a new taxonomic feature in Plagiochilaceae

Heinrichs, Jochen; Anton, Hermann Josef; Gradstein, S. Rob; Mues, Rüdiger; Holz, Ingo

doi:10.1007/bf00985469

Cited by 29 publications

(16 citation statements)

References 16 publications

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“…Verification of surface wax Fuscoluteae as was also seen in the molecular investigation. All members of the Fuscoluteae identified so far have surface wax which is otherwise unknown in Plagiochila (Heinrichs et al, 2000Heinrichs & Rycroft, 2001;Heinrichs, 2002). The extremely thick capsule walls and the large, pluricellular spores of P. dependula strongly resemble those of the morphologically similar Plagiochila fuscolutea and P. longiramea of sect.…”

Section: Discussionmentioning

confidence: 95%

The systematic position ofPlagiochila(Jamesoniella)dependula(Jungermanniopsida) inferred from nrITS sequences and morphology, with notes on its differentiation fromPlagiochila fuscolutea

Heinrichs¹,

Wilson²,

Feldberg³

et al. 2005

Journal of Bryology

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Based on morphology and phylogenetical analyses of nrITS sequences, the Andean endemic Plagiochila (Jamesoniella) dependula is placed in Plagiochila sect. Fuscoluteae. Perianths, oil bodies and sporophytes are described for the first time. Morphologically, P. dependula is characterized by entire, dorsally mostly shortly decurrent, laterally appressed, reniform leaves which are covered by irregular papillae and membranous wax platelets, papillose oil bodies, intercalary androecia with opposite bracts that overlap dorsally, a plagiochilid perianth with an entire mouth, a 250 mm thick capsule wall with thickenings in all layers, large 1-4 celled spores, and bispiral elaters. Morphotypes of Plagiochila fuscolutea with laterally appressed leaves differ from P. dependula by an at least moderately decurrent, broad dorsal leaf base, a ¡smooth upper leaf surface, and by its often toothed leaf apices. Plagiochila wolframii is placed in the synonymy of P. fuscolutea. Maximum likelihood and parsimony analyses of 29 Plagiochila ITS sequences resolve P. dependula in a well-supported clade with several other representatives of P. sect. Fuscoluteae. Branch lengths within sect. Fuscoluteae point to a sudden diversification. Accessions of P. heterophylla s.str. from Great Britain (formerly known as P. atlantica) and Costa Rica form an unsupported monophyletic lineage.

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Section: Discussionmentioning

confidence: 95%

The systematic position ofPlagiochila(Jamesoniella)dependula(Jungermanniopsida) inferred from nrITS sequences and morphology, with notes on its differentiation fromPlagiochila fuscolutea

Heinrichs¹,

Wilson²,

Feldberg³

et al. 2005

Journal of Bryology

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“…The morphology of the wax layer has been used as an important taxonomic character in some groups (e.g. Heinrichs et al ., 2000; Wissemann, 2000; Tomaszewski, 2004). Saddi (1988) previously studied the wax deposition on leaves of Kielmeyera spp.…”

Section: Discussionmentioning

confidence: 99%

Species limits in the Kielmeyera coriacea complex (Calophyllaceae) - a multidisciplinary approach

Caddah

Mayer

Bittrich

2011

Botanical Journal of the Linnean Society

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Kielmeyera coriacea is widely known as one of the most peculiar species of the Cerrado, a savanna-like vegetation of Central Brazil, and it has been the subject of several studies, some including a pharmacological focus. Together with related taxa, it is usually treated as the 'K. coriacea complex'. The genus was revised approximately 30 years ago. However, the revision could not clarify the situation of this complex, and the problematic taxonomic circumscription raises doubts about various scientific studies on plants identified as K. coriacea. In the present paper, we use a multidisciplinary approach in an attempt to understand the species complex and the causes of the current taxonomic confusion better and to provide diagnostic characters to support correct identifications in the group. A genetic population approach was applied using microsatellite markers. Macromorphological, anatomical and micromorphological characters with diagnostic power were investigated in fresh plant material and herbarium specimens. The molecular analysis supports the circumscription of two species in the complex, but they were found to share various morphological and anatomical characters, and hybrid individuals were more similar to K. coriacea than to K. grandiflora. The most powerful diagnostic characters found were: the colour of fresh leaves, the prominence of the inter-secondary veins in fresh leaves, the presence and distribution of phenolic compounds evidenced by formalin-ferrous sulphate staining and the micromorphological pattern of epicuticular structures on the surfaces of leaves related to the colour of the fresh leaves. In spite of occasional hybridization, at least two species should be recognized in the K. coriacea complex. The surest way to identify these species is with fresh material. To identify herbarium materials confidently, anatomical or micromorphological observations are helpful.

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“…The latter is conspeci®c with P. aerea Taylor, type species of sect. Bursatae Carl (Grolle & Heinrichs 1999) and easily distinguishable by the trabeculate leaf cell pattern and the smooth cuticle often covered with surface waxes (Heinrichs et al, 2000b). Schuster (1959) placed P. papillifolia (as P. verruculosa) in sect.…”

Section: Variation Synonymy and DI Erentiationmentioning

confidence: 99%

Morphological and phytochemical studies ofPlagiochila papillifoliaSteph., a Neotropical liverwort new to Europe

Heinrichs¹,

Rycroft²,

Groth³

et al. 2002

Journal of Bryology

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The Neotropical liverwort Plagiochila papillifolia Steph. is conspeci®c with P. caespiticia Spruce ex Herzog (nom. inval.), P. deciduifolia Steph., P. solmsii Steph. and P. verruculosa R.M.Schust.; it is reported from the Azores, new to Europe. Morphologically it shows a nity with sect. Bidentes Carl; phytochemically, several of its lipophilic secondary metabolites are the same as those of P. retrorsa Gottsche, another Neotropical species reported only recently from Macaronesia.

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Surface wax, a new taxonomic feature in Plagiochilaceae

Cited by 29 publications

References 16 publications

The systematic position ofPlagiochila(Jamesoniella)dependula(Jungermanniopsida) inferred from nrITS sequences and morphology, with notes on its differentiation fromPlagiochila fuscolutea

The systematic position ofPlagiochila(Jamesoniella)dependula(Jungermanniopsida) inferred from nrITS sequences and morphology, with notes on its differentiation fromPlagiochila fuscolutea

Species limits in the Kielmeyera coriacea complex (Calophyllaceae) - a multidisciplinary approach

Morphological and phytochemical studies ofPlagiochila papillifoliaSteph., a Neotropical liverwort new to Europe

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