Gymnosiphon samoritoureanus (Burmanniaceae) a new species from Guinea, with new records of other achlorophyllous heteromycotrophs

Cheek, Martin; Burgt, X. van der

doi:10.1007/s12225-010-9180-9

Cited by 24 publications

(12 citation statements)

References 3 publications

(1 reference statement)

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“…(Acanthaceae, Darbyshire et al . 2012), Gymnosiphon samoritoureanus Cheek (Burmanniaceae, Cheek & van der Burgt 2010), Allophylus samoritourei Cheek (Sapindaceae, Cheek & Haba 2016a) and Psychotria samoritourei Cheek (Rubiaceae, Cheek & Williams 2016), or restricted to the interface (or transition) between these two habitats: Hibiscus fabiana Cheek (Malvaceae, Cheek et al . 2020a), while one occurs in mainly lowland woodland: Striga magnibracteata Eb.…”

Section: Discussionmentioning

confidence: 99%

The generic status ofAnacolosa(Olacaceae) in Africa withA. deniseaea new species to science of Endangered submontane forest liana from Simandou, Republic of Guinea

Cheek

Molmou

Gosline

et al. 2022

Preprint

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Anacolosa deniseae Cheek (Olacaceae) a submontane gallery forest canopy liana is described as a new species to science and assessed as Endangered using the IUCN 2012 standard due to threats of habitat destruction connected with mining. The roots smell of benzaldehyde when scraped, and the plant reproduces from root suckers. The species is restricted globally to two locations in the Loma-Man Highlands of the Republic of Guinea, all records but one being in the Pic de Fon Fôret Classé of the Simandou Range. We show that this and the only other continental African species ascribed to the genus Anacolosa, A. uncifera of DRC, Gabon & C.A.R., differ in so many architectural, floral and vegetative characters from the remaining species of the genus, which occur from Madagascar to the Western Pacific, including the type A. frutescens (S.E. Asia and Indo-China), that they clearly represent a separate genus. The African genus represented by these two species is unique within the Olacaceae (excluding Erythropalaceae) in being a climber (vs. shrubs or trees in Anacolosa sensu stricto). Climbing in the two African species is achieved by perennial hook-like structures formed by a combination of five separate traits each of which is unknown elsewhere in the Olacaceae. We formally delimit and describe this new genus, discussing its characteristics, but in the absence of molecular phylogenetic data, refrain from naming it.

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Section: Discussionmentioning

confidence: 99%

The generic status ofAnacolosa(Olacaceae) in Africa withA. deniseaea new species to science of Endangered submontane forest liana from Simandou, Republic of Guinea

Cheek

Molmou

Gosline

et al. 2022

Preprint

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“…& L. J. Pearce [ 36 ] (Vulnerable), Leptoderris sassandrensis Jongkind [ 37 ] (not assessed), Napoleonaea alata Jongkind [ 38 ] (Vulnerable), Pseudovigna sulaensis R. Clark & Burgt [ 39 ] (Vulnerable), Psychotria samoritourei Cheek [ 40 ] (Vulnerable), Stylochaeton pilosus Bogner [ 41 ] (Endangered), and Xysmalobium samouritourei Goyder [ 42 ] (Endangered). Just over the border in Guinea examples include Gymnosiphon samoritoureanus Cheek [ 43 ] (Vulnerable), Striga magnibracteata Eb. Fisch.…”

Section: Discussionmentioning

confidence: 99%

Lebbiea (Podostemaceae-Podostemoideae), a new, nearly extinct genus with foliose tepals, in Sierra Leone

Cheek

Lebbie

2018

PLoS ONE

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Lebbiea grandiflora (Podostemaceae), a rheophytic herb from the Sewa River rapids in Sierra Leone, is described as a new species. It is the first new African genus of Podostemaceae published for 30 years. First collected in May 2017, the species is assessed as Critically Endangered using the IUCN 2012 standard. It is on the edge of extinction with a small population at a single site threatened by deposition of gravel and sand from alluvial gold and diamond mining upstream, and a planned hydro-electric dam. The new genus is unique in Podostemaceae in a) its highly developed and robust style-stigma structure in which the bases of the two style-stigmas unite to form a bifurcate funneliform-cylindrical structure, with a reflexed, blade-like apex that extends half-way around the perimeter of the ovary-fruit towards the base of the ovary-fruit, b) a specialised andropodium, with robust, self-supporting capacity, having differentiated thickened central, and angled, thinner marginal areas (in other Podostemaceae the andropodial structures are undifferentiated), c) the pillar-like haptera which completely elevate the crustose root above the substrate. Lebbiea is placed in Podostemoideae, necessitating amplification of the delimitation of that subfamily in which it is additionally unique in having the foliose tepals characteristic of the basal subfamilies Weddellinoideae and Tristichoideae.

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“…It is likely to be proposed in the future as an 'Important Plant Area' for Guinea (see Darbyshire, continuously updated). Several other new species have recently been discovered at this location in Ziama including Gymnosiphon samoritourei Cheek (Cheek & Van der Burgt 2010) and Allophylus samoritourei Cheek (Cheek & Haba 2016b). Cheek, sp. nov. -Fig.…”

Section: Distribution -Republic Of Guinea (Guinea-conakry)mentioning

confidence: 97%

A synoptic revision of Inversodicraea (Podostemaceae)

Cheek¹,

Feika²,

Lebbie³

et al. 2017

blum - j plant tax and plant geog

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Gymnosiphon samoritoureanus (Burmanniaceae) a new species from Guinea, with new records of other achlorophyllous heteromycotrophs

Cited by 24 publications

References 3 publications

The generic status ofAnacolosa(Olacaceae) in Africa withA. deniseaea new species to science of Endangered submontane forest liana from Simandou, Republic of Guinea

The generic status ofAnacolosa(Olacaceae) in Africa withA. deniseaea new species to science of Endangered submontane forest liana from Simandou, Republic of Guinea

Lebbiea (Podostemaceae-Podostemoideae), a new, nearly extinct genus with foliose tepals, in Sierra Leone

A synoptic revision of Inversodicraea (Podostemaceae)

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