Francis Guthrie

South african mathematician and botanist (1831-1899).

Francis Guthrie (born 22 January 1831 in London; d. 19 October 1899 in Claremont, Cape Town) was a Cape Colony mathematician and botanist who first posed the Four Colour Problem in 1852. He studied mathematics under Augustus De Morgan, and botany under John Lindley at University College London. Guthrie obtained his B.A. in 1850, and LL.B. in 1852 with first class honours. While colouring a map of the counties of England, he noticed that at least four colours were required so that no two regions sharing a common border were the same colour. He postulated that four colours would be sufficient to

Abbreviations: Guthrie
Occupations: mathematician, jurist, botanist, botanical collector
Citizenships: South Africa
Languages: English
Dates: 1831-01-22T00:00:00Z – 1899-10-19T00:00:00Z
Birth place: London
Direct attributions: 81 plants, 0 fungi
Authorship mentions: 84 plants, 0 fungi

81 plants attributed, 3 plants contributed to84 plants:

Erica heleophila (Sunlover Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica heliophila, the sunlover heath, is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape.
Erica haematosiphon (Bloodtube Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica haematosiphon, the bloedbuisies, is a plant that belongs to the genus Erica and forms part of the fynbos. The species is endemic to the Western Cape.
Erica gysbertii (Wireflask Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica gysbertii is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape.
Erica grata Guthrie & Bolus 1905
plant species in the ericaceae family
Erica grata is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape and occurs in the Langeberg from Swellendam to Garcia Pass.
Erica georgica (George Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica georgica, the George heath, is a plant belonging to the genus Erica and forming part of the fynbos. The species' scientific name was first published by Francis Guthrie & Harry Bolus. The plant is endemic to the Western Cape.
Erica drakensbergensis (Drakensberg Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica drakensbergensis, the Drakensberg heath, is a plant belonging to the genus Erica. The species is native to South Africa and Eswatini. In South Africa, the plant occurs in Gauteng, KwaZulu-Natal, Mpumalanga and the Free State.
Erica chrysocodon Guthrie & Bolus 1905
plant species in the ericaceae family
Erica chrysocodon is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape with one population at the Franschhoek Pass. The swampy habitat is threatened by invasive plants.
Erica scytophylla Guthrie & Bolus 1905
plant species in the ericaceae family
Erica scytophylla is a plant belonging to the genus Erica. The species is endemic to the Western Cape.
Erica nabea (Sepal Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica nabea, the sepal heath or MacNab’s heath, is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Eastern Cape and Western Cape.
Erica maderi (Maders Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica maderi is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape and occurs from the Cederberg, through the Kouebokkeveld Mountains to the Hex River Mountains.
Erica gracilipes (Elegant-leg Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica gracilipes is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape and occurs on the southern Agulhas Plain. The range of the plant is 45 km2 and there are three segmented subpopulations. The habitat is threatened by invasive plants, especially acacias, as well as overuse by the cut flower industry. The cultivation of proteas has resulted in parts of the habitat being lost.
Erica alfredii Guthrie & Bolus 1905
plant species in the ericaceae family
Erica alfredii is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape and occurs at Pilaarkop, Riviersonderend Mountains. There is one population of less than 1 000 plants and their habitat is threatened by invasive plants.
Erica vallisgratiae (Genadendal Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica vallis-gratiae is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape and occurs in the Riviersonderend Mountains. The habitat is stable and the plant is considered rare.
Erica ribisaria Guthrie & Bolus 1905
plant species in the ericaceae family
Erica ribisaria is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape and occurs from Houwhoek to Kleinmond. There are currently three fragmented subpopulations remaining, two of which are threatened by invasive species. The third is threatened by road maintenance work and fire prevention belts.
Erica oligantha Guthrie & Bolus 1905
plant species in the ericaceae family
Erica oligantha is a plant that belongs to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape. Here it occurs at two places, Van der Bijlberg and Akkedisberg between Stanford and Napier. The plant's habitat is sensitive to any external change and both populations are declining due to invasive plants.
Erica nematophylla Guthrie & Bolus 1905
plant species in the ericaceae family
Erica nematophylla is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape. It occurs in two locations: Stormsvlei near Riviersonderend and Garcia Pass near Riversdale. Both populations are threatened by invasive plants.
Erica myriocodon Guthrie & Bolus 1905
plant species in the ericaceae family
Erica myriocodon is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape.
Erica maritima Guthrie & Bolus 1905
plant species in the ericaceae family
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Erica irrorata (Painted Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica irrorata is a plant belonging to the genus Erica and is part of the fynbos. The species is endemic to the Western Cape.
Erica grisbrookii (Roughriver Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica grisbrookii is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape.
Erica dodii (Pineapple Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica dodii is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape.
Erica curtophylla Guthrie & Bolus 1905
plant species in the ericaceae family
Erica curtophylla, the curved-leaf heath, is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape. The plant occurs at Milkwoodfontein near Riversdale and Stilbaai.
Erica clavisepala (Cape Point Marsh Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica clavisepala, the club heath and Cape Point marsh heath is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape and occurs on the Cape Peninsula. The population is in the Table Mountain National Park where it is protected. The plant is rare.
Erica berzelioides Guthrie & Bolus 1905
plant species in the ericaceae family
Erica berzelioides is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape. There is only one population at Heuningrug southwest of Bredasdorp. The plant's habitat is threatened by overgrazing, excessive fires and invasive plants, especially the acacia species. The most recent survey only found ten plants.
Erica astroites Guthrie & Bolus 1905
plant species in the ericaceae family
Erica astroites is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape and is rare. It is found only in Meiringspoort in the Swartberg where it grows on cliffs and near waterfalls.
Erica argyraea (Silver Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica argyraea is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Western Cape.
Erica annectens (Cliff-hanger Heath) Guthrie & Bolus 1905
plant species in the ericaceae family
Erica annectens is a plant belonging to the genus Erica and forming part of the fynbos. The species is endemic to the Cape Peninsula where it occurs from Noordehoek to Simon's Town. The plant's habitat is threatened by invasive plants and excessive veld fires.
Erica xanthina Guthrie & Bolus 1905
plant species in the ericaceae family
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Erica ustulescens Guthrie & Bolus 1905
plant species in the ericaceae family
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Erica trichoclada Guthrie & Bolus 1905
plant species in the ericaceae family
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