Allamanda salicifolia (Willdenow ex Roemer & Schultes) J. F. Morales, 2014

Morales, J. Francisco, 2014, Studies in the Neotropical Apocynaceae L: The genus Allamanda in Colombia and a new combination, Phytotaxa 162 (1), pp. 51-56 : 55

Allamanda salicifolia (Willdenow ex Roemer & Schultes) J. F. Morales , comb. nov. Fig. 3C .

Basionym: Echites salicifolius Willdenow ex Roemer & Schultes (1819: 796) . Allamanda cathartica L. fo. salicifolia (Willd. ex Roem. & Schult.) Voss in Siebert & Voss (1894: 655). nom. nud.

Type:— VENEZUELA. Bolivar: Carichana , s.d., Humboldt & Bonpland 1046 (holotype, B-W5179 [photo at INB!]) .

Allamanda thevetiifolia Müller Argoviensis (1860: 388) Type:— VENEZUELA. T.F. Amazonas: Maipures, Orinoco , June 1854, Spruce 3630 (holotype, M; isotypes B [destroyed, photo F neg. 4383!], BM!, BR!, NY! [photo at INB!], P! [photo, INB!]). syn. nov.

Distribution: — Colombia and Venezuela.

Observations:— Allamanda salicifolia is a poorly collected species and easily recognized by its linear to linear-elliptic leaf blades and habitat restricted to granitic outcrops in the Orinoco River basin in the Vichada Department and Venezuela.

Woodson (1936) relegated E. salicifolius to the synonymy of A. cathartica , which was followed by Sakane & Shepherd (1986). Apparently neither Woodson nor Sakane & Shepard saw the type of E. salicifolius , since the type collection is not included in their list of exsiccatae. In fact, the type of Echites salicifolius is conspecific with that of A. thevetiifolia , and predates it by over forty years. Although the name Allamanda salicifolia has been used in the horticultural trade (misapplied for some varieties of A. cathartica ), the necessary combination has never been validated. Sakane & Shepherd (1986) reported this species to northeastern Brazil (Bahia state) based on Pereira 10411 & Duarte 9500 (HB), but this collection should be identified as A. calcicola .

Representative specimen examined:— COLOMBIA. Vichada: parque nacional Natural El Tuparro , 4 March 1975, Zarucchi & Barbosa 3575 ( INB!, MO!)

Figures

FIGURE 3. Allamanda species in Colombia (photographs by J.F. Morales). 1, 5. A. blanchetii 2, 4. A. cathartica. 3. A. salicifolia.