Published July 15, 2020

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The impact of Covid-19 crisis on Plant Taxonomy: will we be able to approach to plant taxonomy as in the past?
Riccardo Maria Baldini
3-4
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Articles

Nepenthes latiffiana and N. domei (Nepenthaceae), two new species of pitcher plants from Terengganu, Peninsular Malaysia
Mohd Norfaizal Ghazalli, Amin Asyraf Tamizi, Dome Nikong, Edward Entalai Besi, Muhamad Ikhawanuddin Mat Esa, Anuar Rasyidi Mohd Nordin, A. Latiff, Ahmad Zaki Zaini, Mohamad Alias Shakri
5-28
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Studies on the Dipterocarpaceae of Borneo, II. Ant stipule-brood sites and extra floral nectary association in saplings of Shorea macrophylla [sect. Pachycarpae] in Sarawak, Malaysian Borneo
Sin Yeng Wong , Peter C. Boyce
29-34
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A Review of North American Isoetes engelmannii (Isoetaceae) complex hybrids, including the description of I. × fernaldii, hyb. nov. and I. × karenae, hyb. nov.
Daniel Francis Brunton, Paul Clayton Sokoloff
35-50
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Taxonomic significance of vegetative and reproductive morphology in southern Africa Rhynchosia sect. Rhynchosia (Fabaceae: Papilionoideae, Phaseoleae)
Abdulwakeel Ayokun-nun Ajao, Annah Ntsamaeeng Moteetee
51-67
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Sempervivum guillemotii Lamotte (Crassulaceae), a rediscovered houseleek of the French-Italian Alps
Lorenzo Gallo
69-76
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Monitoring of alien aquatic plants in the inland waters of Sicily (Italy)
Angelo Troia, Vincenzo Ilardi, Elisabetta Oddo
77-83
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Special section on Araceae

Introduction
Peter C. Boyce
85-88
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Studies on Potheae (Araceae) of Borneo II: Pedicellarum M.Hotta subsumed into Pothos L., and recognition of three new species
Sin Yeng Wong , Jyloerica Joling, Joan T. Pereira, Alviana Damit, Peter C. Boyce, Alistair Hay
89-103
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Studies on Schismatoglottideae (Araceae) of Borneo LXIX: Schismatoglottis imbakensis, a new species of the Patentinervia Complex from ultramafic rocks, Sabah
Kartini Saibeh, Peter C. Boyce, Wong Sin Yeng
105-110
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Studies on the Alocasia Schott (Araceae) of Borneo III: Alocasia puncakborneensis, a new species belonging to the Princeps Complex
Sin Yeng Wong , Peter C. Boyce
111-115
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Studies on Homalomeneae (Araceae) of Sumatera VI: Two remarkable new species of Homalomena [Chamaecladon Clade]
Sin Yeng Wong , Peter C. Boyce, Alistair Hay
117-122
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Two new endemic species of Monstera (Araceae: Monsteroideae: Monstereae) from Golfito in southern Costa Rica
Marco Cedeño-Fonseca, Alistair Hay, Michael H. Grayum, Mario A. Blanco
123-132
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Reviews

Mats Thulin - The Genus Boswellia (Burseraceae). The Frankincense Trees
Riccardo M. Baldini
133-134
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