Biology:Costus dubius

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Short description: Species of plant

Costus dubius
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Zingiberales
Family: Costaceae
Genus: Costus
Species:
C. dubius
Binomial name
Costus dubius
(Afzel.) K.Schum.

Costus dubius is a species of plant native to Tropical Africa.[1][2]

Description

Costus dubius has underground rhizomes which produce leafy stems and inflorescences on separate stalks.[3] The round inflorescences have green bracts; each bract produces a single white flower with a yellow-centered labellum. Costus dubius produces many seeds.[2]

Costus dubius is sometimes confused with several other African species of Costus, such as Costus afer and Costus dinklagei.[4][2] Costus dubius is the only African species of Costus capable of self-pollination.[2]

Range

Costus dubius has a wide native range and can be found throughout tropical Africa.[2]

Costus dubius has been introduced to several places in which it has become naturalized or invasive including:

  • Queensland, Australia[1]
  • Java, Indonesia[5]

Habitat

In its native Africa, Costus dubius is found in many different types of forest, as well as along rivers and roads and in plantations.[2] Costus dubius prefers wet tropical biomes and does not appear to survive in the subtropics.[4][1]

"2 Costus dubius". https://www.botanybrisbane.com/plants/costaceae/costus/costus-dubius/.  - Website contains photographs showing different features of Costus dubius

References

  1. 1.0 1.1 1.2 "Costus dubius (Afzel.) K.Schum.". Royal Botanical Gardens Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:167523-3. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Maas-van de Kamer, H.; Maas, P.J.M.; Wieringa, J.J.; Specht, C.D. (2016). "Monograph of African Costaceae". Blumea - Biodiversity, Evolution and Biogeography of Plants 61 (3): 280-318. doi:10.3767/000651916X694445. 
  3. 3.0 3.1 Evenhuis, Neal L.; Eldredge, Lucius G. (2006). "New Records of Naturalized and Naturalizing Plants Around Lyon Arboretum, Manoa Valley, Oahu". Bishop Museum Occasional Papers (87): 3-18. https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=d57876347f58c53a15d27047c5de9d11dfeab757#page=5. Retrieved 18 July 2024. 
  4. 4.0 4.1 4.2 "Costus dubius". https://www.gingersrus.com/DataSheet.php?PID=3597. 
  5. Mustaqim, Wendy A.; Setiawan, Eka. "An addition to the alien flora of Java: the first record of adventive Costus dubius (Costaceae)". Jurnal Biologi Tropis 21 (2): 496 – 500. doi:10.29303/jbt.v21i2.2514. 

Wikidata ☰ Q15325832 entry