Chiococca P. Browne.

Jardim, Jomar G., Taylor, Charlotte M., Barbosa, Maria Regina & Pessoa, Maria Do Céo R., 2015, Taxonomic notes on Chiococca and Salzmannia (Rubiaceae, Chiococceae) in northeastern Brazil, with a new combination and a new species, Phytotaxa 202 (1), pp. 15-25 : 17-18

publication ID

https://doi.org/ 10.11646/phytotaxa.202.1.2

persistent identifier

https://treatment.plazi.org/id/F102BA21-FC0E-A42B-FF5D-F904FB58A820

treatment provided by

Felipe

scientific name

Chiococca P. Browne.
status

 

Chiococca P. Browne. View in CoL

Type: Chiococca alba ( L.) Hitchc.

This genus includes about 20 species of twining vines, shrubs, and small trees found from the southeastern USA, northern Mexico, through the Antilles and Central America, and widely distributed from northern South America to Bolivia, Paraguay, and northern Argentina. This genus has not been comprehensively reviewed taxonomically. The most widespread, morphologically variable, and commonly collected species is C. alba , which has not been studied across its range and probably includes more than one taxon. Morphological descriptions of this genus were presented by Taylor & Steyermark (2004a), Jung-Mendaçolli (2005), Delprete (2010), and Lorence (2012).

Chiococca View in CoL includes four known species in the Northeast Region of Brazil, which can be identified with the key presented below. However, neither the genus nor the species of this region have been studied in detail since the work of Müller (1881), and as this current treatment is not satisfactory, more detailed taxonomic study is underway (Jardim et al., in prep). One species of uncertain genus affinity, Palicourea insularis Ridley (1890: 41) View in CoL , is newly included here in Chiococca View in CoL as discussed under that species. Delprete (2004) presented several morphological observations on some species of Chiococca View in CoL in this region, in particular that both C. plowmanii View in CoL and C. nitida View in CoL are characterized by fruits that develop from bilocular ovaries but consistently abort one ovule and produce only one pyrene. Variation in fruit morphology within Chiococca View in CoL is further expanded here with the inclusion of P. insularis View in CoL , which produces four rather than two pyrenes. Variation in stigma and pyrene number has been documented within various genera of Rubiaceae View in CoL (e.g., Palicourea Aublet (1775: 172) View in CoL , Steyermark, 1974, Taylor & Steyermark, 2004b; Erithalis, Negrón-Ortiz, 2005 View in CoL ), so the inclusion of C. plowmanii View in CoL and P. insularis View in CoL in Chiococca View in CoL is not precluded by these characters.

L

Nationaal Herbarium Nederland, Leiden University branch

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Rubiaceae

Loc

Chiococca P. Browne.

Jardim, Jomar G., Taylor, Charlotte M., Barbosa, Maria Regina & Pessoa, Maria Do Céo R. 2015
2015
Loc

Erithalis, Negrón-Ortiz, 2005

, Negron-Ortiz 2005
2005
Loc

Palicourea insularis

Ridley 1890: 41
1890
Loc

C. nitida

Bentham 1841
1841
Loc

Palicourea

Aublet 1775: 172
1775
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