Tim M Upson

Tim M Upson
Royal Horticultural Society | RHS · Horticulture, Education & Communities

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29
Publications
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240
Citations

Publications

Publications (29)
Technical Report
Full-text available
The Planet-Friendly Gardening Campaign The RHS and gardeners tackling the climate and biodiversity crisis together 2 Foreword The RHS believes that collectively the actions of each and every one of our nation's 30 million gardeners and the general public can create change and help mitigate the climate and biodiversity crisis and tackle some of our...
Article
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A review of the native Iranian species of Lavandula is presented, including the first recorded occurrence of L. pubescens, new distribution records for L. coronopifolia, and a detailed description and observations of the poorly known endemic L. sublepidota. The phylogenetic relationships of several taxa, including Lavandula sublepidota and L. hasik...
Article
A B S T R A C T Historically, species identification in plants has relied upon detailed comparisons of morphological and anatomical features. Among Lavandula, morphological assessments are often paired with essential oil biochemistry to identify species, and the use of molecular taxonomic approaches has been limited mostly to wild species. We teste...
Article
Cambridge Core - Natural Resource Management, Agriculture, Horticulture and forestry - The Fundamentals of Horticulture - edited by Chris Bird
Article
Full-text available
A remarkable new lavender from southern Italy which has long been treated as L. angustifolia and superficially resembles this montane species from the French and Italian Alps. However, it differs in key characters, most notably the inflorescence, corolla structure, calyx indumentum, bract form and essential oil profile. It is here described as a ne...
Article
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The genus Lavandula L. consists of 39 species distributed from the North Atlantic Islands, across the Mediterranean Basin to India. We analysed 36 taxa of the genus Lavandula representing two of the three subgenera and six of the eight sections according to the most recent classification (Upson & Andrews 2004). We achieved a phylogenetic reconstruc...
Article
The genus Tetradium Lour. is discussed with special reference to taxa in cultivation and the most widely planted species, Tetradium daniellii, (commonly called Euodia daniellii (Benn.) Hemsl. or E. hupehensis Dode) which is the subject of this plate. Its variation, synonymy, history and cultivation are reviewed.
Article
The Chinese tree Emmenopterys henryi is described and illustrated based on the rare blooming of a specimen at Cambridge University Botanic Garden in summer 2012. Other known flowerings in cultivation are reviewed with particular reference to Britain. The origin of the Cambridge tree, propagated from an original introduction at the Royal Botanic Gar...
Article
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The living world is a rich source of chemicals with many medicines, dyes, flavorings, and foodstuffs having their origins in compounds produced by plants. We describe a chemical trail through the plant holdings of the Cambridge University Botanic Gardens. Visitors to the gardens are provided with a laminated trail guide with 22 stopping points mark...
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The cultivation and performance in the UK of the Chinese parasol tree, Firmiana simplex (L.) W. Wight are reviewed and aspects of its uses, flower and fruit morphology, nomenclature and typification are discussed.
Article
In this paper, the case for the conservation of plants that have arisen in cultivation is provided and the mechanisms for extinction discussed, with examples. The approach to cultivated plant conservation over the past 30 years is reviewed and a basis for revising that approach explained. A new, far more comprehensive and rigorous method for priori...
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The history of the Winter Gardens at Cambridge University Botanic Garden is described with particular reference to the one planted in 1978–79 with discussion of the design philosophy, planting and current management practices needed to maintain this maturing garden.
Article
  The University Botanic Garden, Cambridge boasts one of the finest tree collections in eastern England; an up-to-date account of noteworthy and champion trees in the Garden is provided, based in part on previous accounts dating from 1915 and 1984. The history and attributes of some of the finest specimens are given.
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  A comprehensive account of plants that have their origins at Cambridge University Botanic Garden and known as Cantab plants is presented and literature references given.
Article
 Rosa‘Cantabrigiensis’ is a hybrid whose history is connected with Cambridge University Botanic Garden where it was raised and first recognised in 1922. Its origin in the experimental work on Rosa by Charles Hurst is discussed, and its likely parentage is given.
Article
 Rosmarinus eriocalyx Jord. & Fourr., an aromatic shrub native to southern Spain and North Africa is a fairly recent introduction to cultivation. The generic and specific relationships, taxonomic history and natural variation are discussed and experience of its cultivation described.
Article
The redevelopment of the Fen Display is discussed, including the philosophical approach taken, its construction and planting.
Article
The taxonomic history of Aristolochia cathcartii Hook. f., a tropical liane, and its relationship to A. saccata Wall. are discussed, including its introduction into cultivation. The flower structure and pollination mechanism are described and detailed notes given on its cultivation.
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The discovery, taxonomic history and affinities of Geranium christensenianum Handel‐Mazzetti are described. Its recent introduction and cultivation requirements are discussed.
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Platycarya strobilacea Siebold & Zucc. is a monotypic genus and an unusual and rare tree in cultivation. Its discovery and introduction into cultivation are described.
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Quercus × warburgii A. Camus, the Cambridge Oak, is a semi‐evergreen tree of hybrid origin, possibly between Q. rugosa Née and Q. robur L., and is only known in cultivation. Mature trees in gardens are extremely rare. Its history and cultivation are discussed.
Article
Full-text available
The chloroplast trnL-F region was used as an independent data set for phylogenetic analysis of 118 aroid taxa. We investigated the intergeneric relationships of subfamily Monsteroideae (Araceae) and used this as a basis for an interspecific phylogenetic study of Rhaphidophora Hassk., the largest genus of the Monsteroideae. Results of the molecular...
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Lavandula bramwellii Upson & S. Andrews is described as a new species endemic to the south- west area of Gran Canaria, Canary Islands.
Article
Examination of herbarium specimens of Lavandula species from Saharan massifs has revealed two distinct groups, here described as species. Lavandula antineae Maire occurs in Algeria, Niger, Chad and Sudan. Lavandula saharica occurs in Algeria and Libya and is described here. Within L. antineae, we recognise subsp. antineae from the Hoggar (Algeria)...
Article
Full-text available
A revision of the eight native Moroccan species of Lavandula L. section Pterostoechas Ging., based on herbarium studies, SEM photographs, and field observations, is presented utilising morphological, phenological and ecological characters. Within Lavandula of Morocco, L. sect. Pterostoechas with six species is the most diverse, one of which is desc...
Article
A comprehensive survey of the leaf flavonoids of the genus Lavandula and the related Sabaudia group was carried out using two-dimensional paper chromatography and high-performance liquid chromatography. The flavonoid patterns obtained were found to be systematically informative at the infrageneric level. Three main groupings were identified: the fi...
Chapter
Full-text available
Small islands, such as St Helena, provide special challenges for economic development and environmental management. They are often characterised by high levels of environmental degradation and species extinction (Smith et al. 1993) and relatively high levels of social poverty. Their isolation, size, social and settlement history, restricted suite o...

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