Clerodendrum thouarsii Phillipson & Callm.

Phillipson, Peter B. & Callmander, Martin W., 2016, Two varieties of Clerodendrum L. (Lamiaceae) from Madagascar raised to specific rank, Candollea 71 (2), pp. 373-377: 376-377

publication ID

http://doi.org/ 10.15553/c2016v712a19

DOI

http://doi.org/10.5281/zenodo.5849669

persistent identifier

http://treatment.plazi.org/id/082A87BA-7900-8211-695B-0C8CFE90FA4E

treatment provided by

Carolina

scientific name

Clerodendrum thouarsii Phillipson & Callm.
status

nom. nov.

Clerodendrum thouarsii Phillipson & Callm.   , nom. nov.

÷ Clerodendrum aucubifolium var. longiflorum Moldenke   in Bull. Torrey Bot. Club 77: 393. 1950 [non C. longiflorum Decne.   ].

Typus: MADAGASCAR. Prov. Toamasina: sine loc., s.d., du Petit Thouars s.n. (holo-: P [ P00440399]!).  

Etymology. – Clerodendrum thouarsii   is named in honour of Louis Marie Aubert du Petit Thouars (1758-1831), who spent six months in Madagascar between July 1795 and January 1796 (Allorge & Ikor, 2012). He collected mainly along the east coast around Toamasina where he probably collected the type specimen of this species and annoted on his collection the name: “Volkameria longiflora P.”, but this name has never been validely published. Du Petit-Thouars (1806) described many genera in Madagascar, and also several species, notably orchids ( du Petit-Thouars, 1822).

Vernacular names. – “Antambe” (Service Forestier 8603); “Ramidongana” (Service Forestier 26260); “Ravinatamba” (Réserves Naturelles 6661); “Antafana” (Réserves Naturelles 12125).

Distribution, ecology and conservation status. – Clerodendrum thouarsii   is known from humid forest from eight localities, on the eastern escarpment of Madagascar in a restricted area between Betampona and Fenoarivo near the east coast, and inland towards Lac Alaotra. Four of the collection localities fall within the protected area network (Betampona and Zahamena), but others lie outside. Therefore, with an extent of occurrence (EOO) of <20,000 km 2 and a projected continuing decline of lowland evergreen primary forest outside the protected area network, C. thouarsii   can be assigned a preliminary risk of extinction of “Vulnerable” [VU B1ab(i,iii,iv,v)] following IUCN Red List Categories and Criteria ( IUCN, 2012).

Observations. – Moldenke (1950) did not provide a direct comparison between this plant and his var. giganteum   , distinguishing it from typical C. aucubifolium   by its larger coriaceous leaves borne on very stout petioles, by its long broad calyx and by long slender corolla tube and large corolla. Further differences between the three species are discussed in detail above, and summarized in Table 1. A View Table 1 new combination at species level based the varietal name “ longiflorum   ” cannot be established since the name C. longiflorum Decne.   already exists as a valid name for a species occuring in South-East Asia and Australia.

Other specimens examined. – MADAGASCAR. Prov.Toamasina: Vavatenina, Sahatavy, Sahalangina , 17°27’04”S 48°57’17”E, 450 m, 24.X.2000, Andrianjafy & Andriamiarisoa 114 ( MO, P, TAN, TEF); GoogleMaps   Betampona NP , 17°55’S 49°13’E, 300-400 m, 5.X.1994, Andrianarisata et al. 213 ( MO, P, TAN); GoogleMaps   Ambalahady, Vavatenina , [17°28’36”S 49°11’25”E], 100 m, 4.X.1940, Cours 1540 ( P); GoogleMaps   Betampona NP , 250 m, 17°55’S 49°13’E, 3.X.2000, Iambana & Fidel 291 ( P); GoogleMaps   env. de Fénérive . [17°22’S 49°21’E], c. 100 m, Perrier de la Bâthie 10197 ( P [2 sheets]); GoogleMaps   Vavatenina, Ambodimangavalo, Manakambahiny I , près du PN de Zahamena , 17°34’S 48°57’E, 18.X.2000, Ratovoson 291 ( CNARP, MO, P, TEF); GoogleMaps   Betampona NP , [17°55’S 49°13’E], [300-550 m], 4.XI.1953, Service Forestier 8603 ( P [2 sheets]); GoogleMaps   Vavatenina, Antananolobe , [17°27’S 49°00’E], 13.X.1966, Service Forestier 26260 ( P, TEF); GoogleMaps   Betampona NP , 4.X.1954, Réserves Naturelles 6661 ( P);   ibid. loc., 12.VII.1958, Réserves Naturelles 9734 ( P);   Zahamena AP , 28.VI.1962, Réserves Naturelles 12125 ( P).   SINE LOC.: s.d., Lastelle s.n. ( P).  

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

MO

Missouri Botanical Garden

TAN

Parc de Tsimbazaza

TEF

Centre National de la Recherche Appliquée au Developement Rural

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Lamiaceae

Genus

Clerodendrum

Loc

Clerodendrum thouarsii Phillipson & Callm.

Phillipson, Peter B. & Callmander, Martin W. 2016
2016
Loc

Clerodendrum aucubifolium var. longiflorum

Moldenke 1950: 393
1950