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Jovetia Guédès Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Phyton. Annales Rei Botanicae 17: 134. 1975. (Phyton (Horn)) Name publication detail
 

Project Name Data (Last Modified On 6/10/2009)
Acceptance : Accepted
Taxon Profile     (Last Modified On 6/19/2013)
Reference(s):
Generic Distribution: endemic
Generic Species Diversity and Endemism Status: based on existing literature
No. of species in Fl. Madagasc.: not published
Accepted Published Species: 1 endemic
Estimated Undescribed Species: none
Estimated Total Species: 1 endemic
Additional Taxonomic Work: not currently required
Species Level Data Entry: complete
Notes:

The genus Jovetia includes one recognized species of erect to spreading or nearly prostrate, low, xerophytic shrubs with developed long stems but the small leaves all borne on short shoots, small persistent stipules, small flowers that are solitary, axillary, 4-merous, and subtended by a pair of fused bracts, short funnelform corollas that are white to yellow-orange with the lobes right-contorted in bud, and berry-like red fruits with generally 2 seeds, one in each locule. Jovetia is known from calcareous rock outcrops in the south of Madagascar, on the Mahafaly plateau.

Guédès described two species of Jovetia: Jovetia humilis with a spreading to prostrate habit, a calyx limb with simple lobing, a yellow-orange corolla with the tube narrowly funnelform, and Jovetia erecta, with an erect habit, a calyx limb with stipels or reduced accessory lobes produced between each pair of lobes, and a more broadly funnelform white corolla. However Leroy (1976) reviewed these species and concluded that the differences between these were all phenotypic variations related to microsite (exposed vs. sheltered), and recognized only one species. He did however name a new variety, Jovetia humilis var. glabra, based on one specimen, Capuron 22556-SF, that is glabrous instead of densely strigillose the stems, stipules, and leaves. Guédès included this same specimen in his circumscription of Jovetia humilis. Subsequently Leroy's variety has been synonymized with Jovetia humilis (Govaerts et al., on-line World Rubiaceae Checklist; Madagascar Catalogue Project), a conclusion that agrees with much of the general taxnomic practices in tropical Rubiaceae.

Compiled or updated by: MAD; C.M. Taylor VI 2011

 

 
 
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