Lobelia telekii
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''Lobelia telekii'' is a species of
flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
in the family
Campanulaceae The family Campanulaceae (also bellflower family), of the order Asterales, contains nearly 2400 species in 84 genera of herbaceous plants, shrubs, and rarely small trees, often with milky sap. Among them are several familiar garden plants belon ...
, that is found only in the
alpine zone Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alpine tundra gets ...
s of
Mount Kenya Mount Kenya (Kikuyu: ''Kĩrĩnyaga'', Kamba, ''Ki Nyaa'') is the highest mountain in Kenya and the second-highest in Africa, after Kilimanjaro. The highest peaks of the mountain are Batian (), Nelion () and Point Lenana (). Mount Kenya is locat ...
, Mount Elgon, and the
Aberdare Mountains The Aberdare Range (formerly the Sattima Range, Kikuyu: ''Nyandarua'') is a 160 km (100 mile) long mountain range of upland, north of Kenya's capital Nairobi with an average elevation of . It straddles across the counties of Nyandarua, Nye ...
of
East Africa East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territories make up Eastern Africa: Due to the historical ...
. It occurs at higher altitudes on well-drained sloped hillsides. It is a
semelparous Semelparity and iteroparity are two contrasting reproductive strategies available to living organisms. A species is considered semelparous if it is characterized by a single reproductive episode before death, and iteroparous if it is characteri ...
species, putting all its reproductive effort into producing single large
inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
up to 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. ''L. telekii'' plants usually consist of a single rosette, which grows for several decades, flowers once, and then dies. However, a very small number of plants have multiple rosettes connected by an underground stem. Each flower is subtended by a long hairy bract, and the overall appearance has led to the nickname "
Cousin Itt Cousin Itt is a fictional character in the ''Addams Family'' television and film series. He was developed specifically for the 1964 television series and is a regular supporting character in subsequent motion-picture, television and stage adaptat ...
lobelia". The
bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweigh ...
-
pollinated Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds, most often by an animal or by wind. Pollinating agents can be animals such as insects, birds, ...
flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...
s of ''L. telekii'' are hidden among the large bracts within the
inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
. The leaves and bracts are blue-green, and the flowers purple. Each flower can produce up to several hundred small (<1mm diameter) dark seeds, which are passively dispersed. On
Mount Kenya Mount Kenya (Kikuyu: ''Kĩrĩnyaga'', Kamba, ''Ki Nyaa'') is the highest mountain in Kenya and the second-highest in Africa, after Kilimanjaro. The highest peaks of the mountain are Batian (), Nelion () and Point Lenana (). Mount Kenya is locat ...
, ''Lobelia telekii'' occurs at elevations of . It inhabits the drier hill slopes, while its close relative ''
Lobelia keniensis ''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, ...
'' prefers the moister valley bottoms. Partially fertile hybrids do occur. The hill slopes often have rocky moraines that are home to Mount Kenya
rock hyrax The rock hyrax (; ''Procavia capensis''), also called dassie, Cape hyrax, rock rabbit, and (in the King James Bible) coney, is a medium-sized terrestrial mammal native to Africa and the Middle East. Commonly referred to in South Africa as the das ...
, which sometimes eat lobelia leaves and inflorescences, but herbivores are generally deterred by the lobelia's bitter toxic sap, which contains
alkaloid Alkaloids are a class of basic, naturally occurring organic compounds that contain at least one nitrogen atom. This group also includes some related compounds with neutral and even weakly acidic properties. Some synthetic compounds of similar ...
s, probably including
lobeline Lobeline is a pyridine alkaloid found in a variety of plants, particularly those in the genus ''Lobelia'', including Indian tobacco (''Lobelia inflata''), Devil's tobacco (''Lobelia tupa''), great lobelia (''Lobelia siphilitica''), ''Lobelia chin ...
.


Taxonomy

''Lobelia telekii'' was previously classified under the Rhynchopetalum section within the Tupa subgenus. The genus has since been reconfigured so that Tupa and Rhynchopetalum are separate sections, with ''L. telekii'' falling into the latter. Tupa and Rhynchopetalum are separated by their difference in chromosome count and geographic distribution, supported by morphological differences.


References


External links

* telekii Flora of Africa Afromontane flora {{Campanulaceae-stub