Tanaecium crucigerum Seem., Bonplandia (Hannover) 4: 127. 1856.

Frazao, Annelise & Lohmann, Lucia G., 2019, An updated synopsis of Tanaecium (Bignonieae, Bignoniaceae), PhytoKeys 132, pp. 31-52 : 37

5. Tanaecium crucigerum Seem., Bonplandia (Hannover) 4: 127. 1856.

Type.

Lesser Antilles. Dominica, sin. loc., s. d., J. Imray 94 (lectotype, designated here, K [K000449535] image!).

Habitat and distribution.

Tanaecium crucigerum occurs in wet forests in the Lesser Antilles (Dominica, Martinique), Trinidad and Tobago, Costa Rica ( Limón), and Venezuela ( Anzoátegui, Apure, Cojedes, Delta Amacuro, Guárico, Portuguesa).

Phenology.

Flowering: April to July, and October; fruiting: February, April to July, and October to November.

Notes.

Like Lohmann and Taylor (2014), we were also unable to locate the lectotype of T. crucigerum selected by Howard (1989: 334), the collection J. Imray 95 supposedly deposited at K. This collection is thus presumed lost. As such, we select another Imray collection from Dominica studied by Seemmann (1856) deposited at K as lectotype. We selected the material J. Imray 94 as lectotype due to high quality of this material.

This species is morphologically most similar to T. jaroba , sharing many characters such as the simple tendrils, wide infundibular corollas, and wingless seeds (Tab. 1 ). Tanaecium crucigerum differs from T. jaroba by the whitish-tomentose leaflets on the abaxial surface (vs. glabrous or pubescent leaflets on the abaxial surface in T. jaroba ).