Amphilophium crucigerum ( Linnaeus 1753: 624 ) L.G.Lohmann

Hentz Júnior, Elmar J., Lohmann, Lúcia G., Caxambu, Marcelo G., Temponi, Lívia G. & Pires Lima, Laura C., 2022, Floristic Inventory of the Iguaçu and Iguazú National Parks (Brazil and Argentina): Bignoniaceae, Phytotaxa 570 (2), pp. 165-192 : 171

2.1. Amphilophium crucigerum ( Linnaeus 1753: 624) L.G.Lohmann in Hokche et al. (2008: 270) ( Figs. 3 d–e , 5 d ).

Diagnosis:— Amphilophium crucigerum can be recognized by the tomentose stem (vs. puberulous in A. paniculatum ), ovate leaflet (vs. elliptic in A. paniculatum ), smooth calyx (vs. ondulate in A. paniculatum ), and the strongly curved corolla (vs. straight in A. paniculatum ).

Reproductive Period:— Flowering in November, fruiting in May.

Distribution and Habitat:— It occurs from Mexico to western South America, where it grows between 0–1900m elevation ( Pool 2007, Lohmann 2010, Lohmann & Taylor 2014). Within the study area, it was registered in Céu Azul, Matelândia, Foz do Iguaçu, and in the PARNA Iguazú , really common, but usually high on the trees, difficulting its collection.

Selected Specimens Examined:— ARGENTINA. Misiones: Puerto Iguazú, sendero Macuco, 25 November 2003, Cocucci 3224 ( CTES!) . BRAZIL. Paraná, Parque Nacional do Iguaçu: Céu Azul, próximo à Trilha da Jacutinga , 25°14’27.8”S, 53°51’27.9”W, 24 May 2018, Hentz Junior 28 ( UNOP!) ; Foz do Iguaçu , ponto de ônibus Macuco Safari, 16 January 2019, Hentz Júnior 67 ( UNOP!) ; Matelândia , estrada, 25°20’30.0”S, 53°52’29.7”W, 13 November 2015, Siqueira 1826 ( HCF!) .

Figures

FIGURE 3. Adenocalymma bracteatum.A.Branch showing lenticels.B.Calyx withlinear cupularand glandulartrichomes.Adenocalymma paulistarum. C. Curved prophylls of the axillary buds. Amphilophium crucigerum. D. Corolla strongly curved. E. Fruit. Amphilophium paniculatum. F. Flower showing the undulated calyx and bilabiate corolla. G. Fruit. Drawn by Thaís Marcon.

FIGURE 5. Adenocalymma marginatum. A. Habit and leaflet with coriaceous margins. B. Inflorescence. C. Leaflet hyaline margin. Amphilophium crucigerum. D. Flower. Amphilophium paniculatum. E. Bilabiate flower and undulated calyx. Bignonia binata. F. Habit. Bignonia sciuripabulum. G. Inflorescence.