Giant lobelia

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Giant lobelia and Senecio plants in Mt Kenya. Giant lobelia and senecio plants.jpg
Giant lobelia and Senecio plants in Mt Kenya.

Giant lobelia is a common name for several plants in the genus Lobelia; many of these species are restricted to high altitude, alpine ecosystems. In East African highlands as many as 20 species were listed in 1934 (Bruce). A selection of species names is below.

The giant lobelia span Africa, Hawaii, South America, the Himalayas, and Southeast Asia. Phylogenetic analysis strongly supports that this is a monophyletic group. [3] [4]

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Asterales is an order of dicotyledonous flowering plants that includes the large family Asteraceae known for composite flowers made of florets, and ten families related to the Asteraceae. While asterids in general are characterized by fused petals, composite flowers consisting of many florets create the false appearance of separate petals.

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

Lobelia is a genus of flowering plants in the family Campanulaceae comprising 415 species, with a subcosmopolitan distribution primarily in tropical to warm temperate regions of the world, a few species extending into cooler temperate regions. They are known generally as lobelias.

<span class="mw-page-title-main">Casuarinaceae</span> Family of plants

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<span class="mw-page-title-main">Campanulaceae</span> Family of flowering plants comprising bellflowers

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<span class="mw-page-title-main">Hawaiian lobelioids</span> Group of flowering plants

The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, subfamily Lobelioideae, all of which are endemic to the Hawaiian Islands. This is the largest plant radiation in the Hawaiian Islands, and indeed the largest on any island archipelago, with over 125 species. The six genera involved can be broadly separated based on growth habit: Clermontia are typically branched shrubs or small trees, up to 7 metres (23 ft) tall, with fleshy fruits; Cyanea and Delissea are typically unbranched or branching only at the base, with a cluster of relatively broad leaves at the apex and fleshy fruits; Lobelia and Trematolobelia have long thin leaves down a single, non-woody stem and capsular fruits with wind-dispersed seeds; and the peculiar Brighamia have a short, thick stem with a dense cluster of broad leaves, elongate white flowers, and capsular fruits. The relationships among the genera and sections remains unsettled as of April 2022.

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Phyllomys is a genus of arboreal spiny rat, geographically restricted to the forests of eastern Brazil.

<i>Lobelia scaevolifolia</i> Genus of flowering plants

Lobelia scaevolifolia is a species of the plant family Campanulaceae. It is endemic to the island of Saint Helena in the South Atlantic Ocean. It was at one time placed as the only species, Trimeris scaevolifolia, in the genus Trimeris. Its common name is St. Helena lobelia.

<i>Dendrosenecio keniodendron</i> Species of flowering plant

Dendrosenecio keniodendron or giant groundsel is a species of the genus Dendrosenecio of the large family Asteraceae and is one of the several species of giant groundsels endemic to the high altitudes of the Afrotropics, including Dendrosenecio johnstonii (Senecio battiscombei) occurring on Mount Kilimanjaro, Mount Kenya, and the Aberdare Mountains, Dendrosenecio keniensis occurring the lower alpine zone of Mount Kenya and D. keniodendron occurring in higher and drier sites on Mount Kenya. The giant rosette plants, sometimes 6 metres (20 ft) tall, often grow in even-sized stands, with different understory communities under different-aged stands.

<i>Dendrosenecio keniensis</i> Species of plant

Dendrosenecio keniensis is one of the giant groundsels endemic the higher altitudes of Mount Kenya. It is in the family Asteraceae and the genus Dendrosenecio. Dendrosenecio keniodendron occurs the upper alpine zone of Mount Kenya and D. keniensis in the wetter areas of the lower alpine or the moorlands.

<i>Lobelia deckenii</i> Species of plant in the family Campanulaceae

Lobelia deckenii is a species of flowering plant in the family Campanulaceae. It is a giant lobelia endemic to the mountains of Tanzania. It is listed as a threatened plant of the forests of Cherangani hills, Kenya. It grows in moist areas, such as valley bottoms and moorland, in contrast to Lobelia telekii which grows in a similar but drier habitat. These two species produce occasional hybrids. Lobelia deckenii plants usually produce multiple rosettes. Each rosette grows for several decades, produces a single large inflorescence and hundreds of thousands of seeds, then dies. Because individual plants have multiple rosettes, they survive to reproduce repeatedly, and plants with more rosettes flower more frequently. It is iteroparous.

<i>Lobelia telekii</i> Species of flowering plant

Lobelia telekii is a species of flowering plant in the family Campanulaceae, that is found only in the alpine zones of Mount Kenya, Mount Elgon, and the Aberdare Mountains of East Africa. It occurs at higher altitudes on well-drained sloped hillsides. It is a semelparous species, putting all its reproductive effort into producing single large inflorescence up to 3 metres (10 ft) tall, and then dying. Inflorescences of L. telekii also possesses a large pith-volume for internal water storage and marcescent foliage which could provide insulation. It secretes a polysaccharide into this reservoir, which may be useful for its survival in the cold climate. The plant is named after the Austro-Hungarian explorer, Count Sámuel Teleki.

<span class="mw-page-title-main">Scarlet-tufted sunbird</span> Species of bird

The scarlet-tufted sunbird is a species of bird in the Nectarinia of the family Nectariniidae. It is found in Democratic Republic of the Congo, Kenya, Malawi, Rwanda, Tanzania, Uganda, and Zambia. It is also known as the red-tufted sunbird and the scarlet-tufted malachite sunbird.

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

Burmeistera is a genus of flowering plants in the bellflower family, Campanulaceae. There are around 130 species distributed in Central and South America. This genus represents a rapid evolutionary radiation with species having diverged within only the last 2.6 million years.

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

Dendrosenecio is a genus of flowering plants in the sunflower family. It is a segregate of Senecio, in which it formed the subgenus Dendrosenecio. Its members, the giant groundsels, are native to the higher altitude zones of ten mountain groups in equatorial East Africa, where they form a conspicuous element of the flora.

<span class="mw-page-title-main">Natural history of Mount Kenya</span>

The flora and fauna of Mount Kenya are diverse, due to the variation in altitude, rainfall, aspect and temperature. The mountain slopes can be divided into vegetation zones, with each zone having different dominant plant species. Although many plants on Mount Kenya have local names, here they are reported only with their English and scientific names.

<i>Lobelia rhynchopetalum</i> Species of flowering plant

Lobelia rhynchopetalum, the giant lobelia, is a plant endemic to Ethiopia. Its habitat is the Afroalpine climate of the Semien Mountains and Bale Mountains National Park. Recent study show that it is under a threat of climate change.

Lobelia cleistogamoides is a small herbaceous plant in the family Campanulaceae native to Western Australia, and first described in 2007 by Neville Walsh and David Albrecht.

<i>Lobelia angulata</i> Species of flowering plant

Lobelia angulata, previously known as Pratia angulata, and commonly known as pānakenake, or Lawn Lobelia is a small scrambling herbaceous plant native to New Zealand.

References

  1. Leakey, L. S. B. (1977). The Southern Kikuyu before 1903, v. III, pp. 1324 5. London and New York: Academic Press. ISBN   0-12-439903-7
  2. Knox, Eric Boyd (1993). Evolution of the Giant Senecios and Giant Lobelias in Eastern Africa. University of Michigan. p. 42. (http://hdl.handle.net/2027.42/103434)
  3. Antonelli, Alexandre (2007). "Higher level phylogeny and evolutionary trends in Campanulaceae subfam. Lobelioideae: Molecular signal overshadows morphology". Molecular Phylogenetics and Evolution. 46 (1): 1–18. doi:10.1016/j.ympev.2007.06.015. PMID   18042405.
  4. Antonelli, A. Have giant lobelias evolved several times independently? Life form shifts and historical biogeography of the cosmopolitan and highly diverse subfamily Lobelioideae (Campanulaceae) . BMC Biol 7, 82 (2009). https://doi.org/10.1186/1741-7007-7-82.

E. A. Bruce. “The Giant Lobelias of East Africa.” Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew), vol. 1934, no. 2, 1934, pp. 61–88. JSTOR, https://doi.org/10.2307/4118226. Accessed 14 June 2024.