| Cosmocalyx | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Subfamily: | Cinchonoideae |
| Tribe: | Hamelieae |
| Genus: | Cosmocalyx Standl. |
| Species: | C. spectabilis |
| Binomial name | |
| Cosmocalyx spectabilis | |
Cosmocalyx is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Cosmocalyx spectabilis, which is found in Mexico, Belize, and Guatemala.[1]
Description
Cosmocalyx spectabilis is a slender tree, up to 15 m (49 ft) in height and 20 cm (7.9 in) in diameter (dbh). After anthesis, one of the four calyx lobes expands into a reddish, leaf-like structure called a calycophyll. These facilitate dispersal of the fruit by wind. The fruit is a cylindrical indehiscent bilocular capsule. Each locule contains one basally inserted seed. This combination of characters distinguishes Cosmocalyx from other genera in Rubiaceae.[2]
Systematics
Cosmocalyx was named by Paul Standley in 1930.[3] The generic name is derived from the Ancient Greek words, kosmos, meaning "order", and kalyx, "a calyx".[4]
Cosmocalyx is placed with Deppea, Hoffmannia, Hamelia and several other genera in the tribe Hamelieae. Relationships within this tribe are uncertain.[5]
References
- ↑ "Cosmocalyx in the World Checklist of Rubiaceae". Retrieved 13 June 2014.
- ↑ Delprete PG (1998). "Notes on calycophyllous Rubiaceae. Part III. Systematic position of the monotypic Mexican genus Cosmocalyx and notes on the calycophyll development". Brittonia. 50 (3): 309–317. doi:10.2307/2807774.
- ↑ Cosmocalyx page 56. In: Paul C. Standley. 1930. "Studies of American Plants – III". Field Museum of Natural History. Botanical series. 8(1):3-73.
- ↑ Quattrocchi U (2000). CRC World Dictionary of Plant Names. Vol. 1. Boca Raton, New York, Washington DC, London: CRC Press. ISBN 978-0-8493-2675-2.
- ↑ Manns U, Bremer B (2010). "Towards a better understanding of intertribal relationships and stable tribal delimitations within Cinchonoideae s.s. (Rubiaceae)". Molecular Phylogenetics and Evolution. 56 (1): 21–39. doi:10.1016/j.ympev.2010.04.002. PMID 20382247.