A New Species of Secamone (Apocynaceae, Secamonoideae) from Borneo

New species and combinations of <I>Secamone</I> (<I>Apocynaceae</I>, <I>Secamonoideae</I>) from South East Asia

“…However, they cannot by any diagnostic floral character be distinguished from African Secamone and are here transferred to this genus. See also discussion in Schumann (1895), Forster (1991Forster ( , 1996 and Klackenberg (2001Klackenberg ( , 2004. They are all accepted species in the ongoing revision.…”

“…In Asia it is found in Sri Lanka and southern India to the Himalayas, and from southern China in the northwest through Malesia to eastern Australia and New Caledonia (Klackenberg 1992a, Forster 1996. Recent studies from the Malesian region have dealt with new taxa from Borneo and Sulawesi (Klackenberg 2004(Klackenberg , 2006. See those papers for a longer introduction to the genus.…”

“…These characters would place them in the genus Toxo carpus Wight & Arn., one of the genera of Secamonoideae that usually has been accepted in Malesia and SE Asia. However, taking into account the broad morphological variation within Secamone in Africa, notably Madagascar, Klackenberg (2001Klackenberg ( , 2004 argued, following Schumann (1895) and Forster (1991Forster ( , 1996, that Secamone (Brown 1810) and Toxocarpus (Wight 1834) are congeneric. Consequently, the new taxa are here described in Secamone.…”

A new combination in Genianthus (Apocynaceae – Secamonoideae)

“…to include 16 species of shrubby twiner found in India, mainland South-East Asia (including Thailand) and Malesia as far east as the Philippines and Sulawesi. Later, however, Klackenberg (2004) went on to express doubt over the distinctness of the four genera of the subfamily Secamonoideae (viz. Genianthus, Goniostemma Wight, Secamone R.Br.…”

Four new species of Secamone (Apocynaceae, Secamonoideae) from Indonesia

“…These characters would place them in the genus Toxocarpus Wight & Arn., one of the genera of Secamonoideae that usually have been accepted in SE Asia. However, Toxocarpus and Secamone are considered to be congeneric (for a discussion see Klackenberg, 2004), and the new taxa are described in Secamone. Accepted taxa of Toxocarpus will succesfully be transferred to Secamone during the ongoing revision.…”