Lobelioideae is a subfamily of the plant family Campanulaceae. It contains 32 genera,1] totalling about 1200 species. Some of the larger genera are Lobelia, Siphocampylus, Centropogon, Burmeistera and Cyanea.
They are perennials, sometimes annuals, ranging in form from herbs to small trees. Most species are tropical in distribution, but in total this subfamily occurs almost worldwide, being absent only from Arctic regions, central Asia and the Near East.
This subfamily was formerly given family rank as Lobeliaceae, under a somewhat different circumscription.
The leaves are simple and alternate. The plants have milky sap. The flowers are asymmetrical with five lobes and stamens. The corolla tube opens along the upper side with two lobes above and three below, and the stamens join together in the tube.
The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, 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 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. [more]
Burmeistera
Burmeistera is a genus in the family Campanulaceae. [more]
Clermontia
The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, 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 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. [more]
The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, 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 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. [more]
Downingia is a of 13 annual plants native to western North America and Chile. Commonly known as "calicoflowers", they are notable for forming mass displays of small but colorful blooms around vernal pools. A number are uncommon endemics in California. [more]
Kniphofia (), also called Tritoma, Red hot poker, Torch lily or Poker plant, is a genus of plants in the family Xanthorrhoeaceae, subfamily Asphodeloideae, that includes 70 or more species native to Africa. Some species have been commercially used horticulturally and are commonly known for their bright, rocket-shaped flowers. [more]
Legenere
Legenere limosa is an annual wildflower of the bellflower family endemic to limited portions of Northern California. This species is the sole member of the genus Legenere. The species common name is False Venus' looking glass. [more]
Lobelia
Lobelia () is a genus of flowering plant comprising 360?400 species, with a subcosmopolitan distribution primarily in tropical to warm temperate regions of the world, a few species extending into cooler temperate regions. English names include Lobelia, Asthma Weed, Indian Tobacco, Pukeweed, and Vomitwort. [more]
Lomatogonium
Lomatogonium is a genus of 18 species in the family Gentianaceae, found in cool temperate to subarctic regions of Asia, with two species (L. carinthiacum, L. rotatum) also in Europe and one species (L. rotatum) also in North America. By far the highest diversity is in China, with 16 species. [more]
Lysipomia
Lysipomia is a genus of in family Campanulaceae. It contains the following species (but this list may be incomplete): [more]
Siphocampylus is a of plant in family Campanulaceae. It contains the following species (but this list may be incomplete): [more]
Solenopsis
Solenopsis is a scientific name for two genera: [more]
Trematolobelia
The Hawaiian lobelioids are a group of flowering plants in the bellflower family, Campanulaceae, 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 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. [more]
Unigenes
More info about the Genus Unigenes may be found here.
Media related to Lobelioideae at Wikimedia Commons 
Data related to Lobelioideae at Wikispecies