Globulostylis

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Globulostylis
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Ixoroideae
Tribe: Vanguerieae
Genus: Globulostylis
Wernham
Type species
Globulostylis talbotii

Globulostylis is a genus of flowering plants in the family Rubiaceae. It comprises 8 species growing in Central Africa.

Contents

Description

The main characters of Globulostylis are the few-flowered inflorescences with a pair of bracts at the apex of the peduncle and the style with a swelling in the lower half. [1]

Distribution and habitat

Globulostylis has 8 species in Central Africa, all endemic to the Lower Guinean forests, except G. uncinula , which also occurs in the Congolian forests. [1]

All species are shrubs or small trees of forest understory, never gregarious.

Bacterial leaf symbiosis

Endophytic bacteria are housed in the intercellular space of the leaf mesophyll tissue. The presence of these bacteria can only be microscopically ascertained. The bacteria are identified as Burkholderia , which is a genus that is also found in the leaves of other Rubiaceae species. [2] [3] hypothesis is that these endophytic bacteria provide chemical protection against insect herbivory. [4]

Taxonomy

The genus was described by H.F. Wernham in 1913 to accommodate two species from South Nigeria collected by Mr. and Mrs. P.A. Talbot, viz. G. minor and G. talbotii . [5] A third species, G. cuvieroides , was added later. [6] Globulostylis and Cuviera species are closely related, and therefore at one point Globulostylis was treated as a subgenus of Cuviera. [7] However, the combined analysis of both morphological and molecular data separates both genera. [1]

Species

Accepted species according to the latest revision. [1]

Related Research Articles

Rubiaceae Family of flowering plants including coffee, madder and bedstraw

The Rubiaceae are a family of flowering plants, commonly known as the coffee, madder, or bedstraw family. It consists of terrestrial trees, shrubs, lianas, or herbs that are recognizable by simple, opposite leaves with interpetiolar stipules and sympetalous actinomorphic flowers. The family contains about 13,500 species in about 620 genera, which makes it the fourth-largest angiosperm family. Rubiaceae has a cosmopolitan distribution; however, the largest species diversity is concentrated in the tropics and subtropics. Economically important species include Coffea, the source of coffee, Cinchona, the source of the antimalarial alkaloid quinine, some dye plants, and ornamental cultivars.

<i>Pavetta</i> Genus of flowering plants in the coffee, madder and bedstraw family Rubiaceae

Pavetta is a genus of flowering plants in the family Rubiaceae. It comprises about 350 species of trees, evergreen shrubs and sub-shrubs. It is found in woodlands, grasslands and thickets in sub-tropical and tropical Africa and Asia. The plants are cultivated for their simple but variable leaves, usually opposite but also occur in triple whorls. The leaves are often membranous with dark bacterial nodules. Pavetta has small, white, tubular flowers, sometimes salviform or funnel-shaped with 4 spreading petal lobes. The flowers are carried on terminal corymbs or cymes.

Rytigynia is a genus of flowering plants in the family Rubiaceae. It is found in tropical and southern Africa. The genera Rytigynia and Fadogia form a strongly supported clade but neither of these genera is monophyletic.

<i>Sabicea</i> Genus of plants

Sabicea is a genus of flowering plants in the family Rubiaceae. They are known commonly as the woodvines. The type species is Sabicea cinerea. There are about 145 species. Most are distributed in tropical Africa and South America.

<i>Vangueria</i> Genus of flowering plants

Vangueria is a genus of flowering plants in the family Rubiaceae. The genus is named for Voa vanguer, as V. madagascariensis is known in Malagasy.

Vangueriopsis is a genus of flowering plants in the family Rubiaceae.

Vanguerieae Tribe of flowering plants

Vanguerieae is a tribe of flowering plants in the family Rubiaceae and contains about 655 species in 30 genera. It is one of the most species-rich groups within the family and it is distributed all over the Paleotropics.

<i>Fadogia</i> genus of plants

Fadogia is a genus of flowering plants in the family Rubiaceae. The genera Rytigynia and Fadogia form a strongly supported clade but neither of these genera is monophyletic.

Fadogiella is a small genus of flowering plants in the family Rubiaceae. It was described by Walter Robyns in 1928.

Cuviera is a genus of flowering plants in the family Rubiaceae native to tropical Africa. It was originally described by Augustin Pyramus de Candolle in 1807 and is named after the French naturalist Georges Cuvier.

<i>Empogona</i> Genus of plants

Empogona is a genus of flowering plants in the family Rubiaceae. The genus is found in tropical and southern Africa and Madagascar. It was for a time deemed a subgenus of Tricalysia.

<i>Vangueria pygmaea</i> Species of plant

Vangueria pygmaea is a species of flowering plant in the family Rubiaceae.

"Candidatus Caballeronia hispidae" is a bacterium from the genus Caballeronia and the family Burkholderiaceae.>

Candidatus Caballeronia kirkii is a Gram-negative, non-fermenting bacterium from the genus Caballeronia and the family Burkholderiaceae. Ca. C. kirkii is an endosymbiont of the plant Psychotria kirkii, also known as Rubiaceae, and exists inside leaf and stem nodules.

"Candidatus Caballeronia nigropunctata" is a Candidatus species of bacteria from the genus Caballeronia and the family Burkholderiaceae. "Candidatus Caballeronia nigropunctata" is an endosymbiont of the plant Psychotria nigropunctata.

"Candidatus Caballeronia rigidae" is a bacterium from the genus Caballeronia and the family Burkholderiaceae. Candidatus Burkholderia rigidae is an endosymbiont.

"Candidatus Burkholderia schumannianae" is a bacterium from the genus Caballeronia and the family Burkholderiaceae. "Candidatus Caballeronia schumannianae" is an endosymbiont.

Colletoecema is a genus of flowering plants in the family Rubiaceae. It is the only genus in the tribe Colletoecemateae. The 3 species are found from west-central tropical Africa to Angola.

Caballeronia is a genus of bacteria from the family of Burkholderiaceae which has been reported to perform biological nitrogen fixation and promote plant growth

Sabicea amazonensis is a species of plant in the family Rubiaceae. It is found in tropical South America. Zemagho, et al. assign Sabicea amazonensis to their subgenus, Sabicea Aubl. subgenus Sabicea, on the basis of morphological characters.

References

  1. 1 2 3 4 Verstraete B, Lachenaud O, Smets E, Dessein S, Sonké B (2013). "Taxonomy and phylogeny of Cuviera (Rubiaceae-Vanguerieae) and reinstatement of the genus Globulostylis with the description of three new species". Botanical Journal of the Linnean Society. 173 (3): 407–441. doi: 10.1111/boj.12062 .
  2. Verstraete B, Janssens S, Smets E, Dessein S (2013). "Symbiotic beta-proteobacteria beyond legumes: Burkholderia in Rubiaceae". PLOS ONE. 8 (1): e55260. doi: 10.1371/journal.pone.0055260 . PMC   3555867 . PMID   23372845.
  3. Verstraete B, Janssens S, Lemaire B, Smets E, Dessein S (2013). "Phylogenetic lineages in Vanguerieae (Rubiaceae) associated with Burkholderia bacteria in sub-Saharan Africa". Am. J. Bot. 100 (12): 2380–7. doi:10.3732/ajb.1300303. PMID   24275705.
  4. Sieber S, Carlier A, Neuburger M, Grabenweger G, Eberl L, Gademann K (2015). "Isolation and total synthesis of kirkamide, an aminocyclitol from an obligate leaf nodule symbiont" (PDF). Angewandte Chemie International Edition. 54 (27): 7968–7970. doi:10.1002/anie.201502696. PMID   26033226.
  5. Wernham H (1913). "Globulostylis". In Rendle A, Baker E, Moore S (eds.). Catalogue of the plants collected by Mr. & Mrs. P.A.Talbot in the Oban district South Nigeria. London: Printed by order of the Trustees of the British Museum. pp. 49–51.
  6. Wernham (1918). "New Rubiaceae from the Belgian Congo". Botanical Journal of Botany, British and Foreign. 56: 309–314.
  7. Verdcourt B (1987). "Notes on African Rubiaceae-Vanguerieae". Kew Bulletin. 42 (1): 123–199. doi:10.2307/4109900. JSTOR   4109900.