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Houstonia (bluet) is a genus of plants in the family Rubiaceae. Many species were formerly classified, along with other genera since segregated elsewhere, in a more inclusive genus Hedyotis.
Bluets are often small and delicate. For example, H. rosea may grow only one inch tall. Some species are single stemmed and others have multiple stems in bunches. Flowers are blue, purple, lavender, white, or rose, often with shades of one color present in an individual population. Flowers have 4 sepals, colloquially denominated "petals", a salverform corolla with 4 lobes, and an inferior ovary. Some species exhibit heterostyly. The fruit is an often roughly cordate capsule enclosing many seeds and which usually dehisces via a suture across its apex.
Houstonia consists of 20 species native to North America.[2] Another 5 species are classified in the genus Stenaria; Houstonia without Stenaria is paraphyletic.[3] Close relatives of the genus are Oldenlandia microtheca and, more distantly, Arcytophyllum.[4]
Its members superficially resembles species of the genus Myosotis (Forget-me-nots), but are distinguished from the latter by having only 4 sepals (petals) instead of 5.
Species accepted as of May 2014 are:[5]
Media related to Houstonia at Wikimedia Commons
Houstonia (bluet) is a genus of plants in the family Rubiaceae. Many species were formerly classified, along with other genera since segregated elsewhere, in a more inclusive genus Hedyotis.
Bluets are often small and delicate. For example, H. rosea may grow only one inch tall. Some species are single stemmed and others have multiple stems in bunches. Flowers are blue, purple, lavender, white, or rose, often with shades of one color present in an individual population. Flowers have 4 sepals, colloquially denominated "petals", a salverform corolla with 4 lobes, and an inferior ovary. Some species exhibit heterostyly. The fruit is an often roughly cordate capsule enclosing many seeds and which usually dehisces via a suture across its apex.
Houstonia consists of 20 species native to North America. Another 5 species are classified in the genus Stenaria; Houstonia without Stenaria is paraphyletic. Close relatives of the genus are Oldenlandia microtheca and, more distantly, Arcytophyllum.
Its members superficially resembles species of the genus Myosotis (Forget-me-nots), but are distinguished from the latter by having only 4 sepals (petals) instead of 5.
Houstonia es un género con 120 especies de plantas con flores del orden de las Gentianales de la familia de las Rubiaceae.[1]
Es nativo de Centroamérica y Norteamérica.
Houstonia fue descrita por Carlos Linneo y publicado en Species Plantarum 1: 105, en el año 1753.[2] La especie tipo es: Houstonia caerulea L.
Datos: Q9005036
Multimedia:
Especies: Houstonia (Rubiaceae)
Houstonia es un género con 120 especies de plantas con flores del orden de las Gentianales de la familia de las Rubiaceae.
Es nativo de Centroamérica y Norteamérica.
Houstonia
Houstonia est un genre de plantes de la famille des Rubiaceae. De nombreuses espèces étaient autrefois classées, avec d'autres genres depuis séparés ailleurs, dans un genre plus inclusif Hedyotis.
Le genre Houstonia contient des espèces à feuilles étroites en touffe, à fleurs à quatre pétales en coupe ou en entonnoir, généralement solitaires ou réunies en petits bouquets au bout de longs pédoncules[1].
Selon GBIF (11 janvier 2022)[2]:
Houstonia
Houstonia est un genre de plantes de la famille des Rubiaceae. De nombreuses espèces étaient autrefois classées, avec d'autres genres depuis séparés ailleurs, dans un genre plus inclusif Hedyotis.
Houstonia là một chi thực vật có hoa trong họ Thiến thảo (Rubiaceae).[2]
Chi Houstonia gồm các loài:
_Hedyotis_caerulea.jpg)
Houstonia là một chi thực vật có hoa trong họ Thiến thảo (Rubiaceae).
