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| Passiflora calicicalyx T. Boza & J. M. MacDougal, in MacDougal & Espinoza, 2022. |
Abstract
Passiflora calicicalyx T. Boza & J. M. MacDougal, a new species of Passiflora L. known only from near Cochabamba, Bolivia, is described and illustrated from photographs and dry material. The new species is similar to P. tatei Killip & Rusby but differs by being glabrescent, with glabrous ovary, and entire bracts only toward the base of the peduncle. It is placed in Passiflora subg. Decaloba (DC.) Rchb. sect. Decaloba DC.
Keywords: Bolivia, endemic, Passiflora, Passiflora tatei, Passifloraceae, subgenus Decaloba
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| Passiflora calicicalyx T. Boza & J. M. MacDougal. -A. Habit, flowering branch. -B. Flower. -C. Flower, longitudinal section. -D. Left to right: individual coronal outer and inner filament, and petal. -E. Node with immature fruit. Drawn from the type collection (Boza & Uzquiano 2094) by Alba L. Arbelaez. |
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| Passiflora calicicalyx T. Boza & J. M. MacDougal. -A. Flower. -B. Flower, side view, with buds in background. -C. Branch with buds and open flowers, habit; note extrafloral nectaries on leaves. -D. Base of flowers, adaxial view showing cup shape where pedicel attaches; note also the carinate sepals and the small petals. -E. Transverse section of flower showing outer corona, inner corona and operculum, nectary, androgynophore and gynophore, and ovary. -F. Detail of flower showing (top downward) gynoecium, stamens, swollen base of androgynophore, operculum and inner corona, and base of outer coronal filaments fused to base of sepal. Scale bars: A, B, D = 5 mm; C = 1 cm; E, F = 2 mm. Photographs of the type collection (Boza & Uzquiano 2094) in the field by Tatiana Boza. |
Passiflora calicicalyx T. Boza & J. M. MacDougal, sp. nov.
Passiflora calicicalyx T. Boza & J. M. MacDougal a ceteris speciebus ad Passifloram L. subg. Decalobam (DC.) Rchb. sect. Decalobam DC. pertinentibus foliorum lobis lateralibus inter se angulum 23°–30° formantibus, corona alba vittis purpureis ornata atque androgynophoro 9–10.5 mm longo distinguitur; praecipue a specie simili P. tatei Killip & Rusby planta glabrescente, ovario glabro atque bracteis floralibus ad partem inferiorem pedunculi portatis distinguitur.
Etymology. The species is named for its conspicuously and rather narrowly abaxially indented cup-shaped floral tube (hypanthium/floral cup/calyx tube; see Tillett, 1988), leading to a conspicuously expanded base of the androgynophore and a hidden attachment of the floral stipe (pedicel) into the flower. Literally, a chalice-shaped calyx, a play on words.
John M. MacDougal and Tatiana Erika Boza Espinoza. 2022. Passiflora calicicalyx, A New Species in Section Decaloba (Passifloraceae) from Bolivia. Novon: A Journal for Botanical Nomenclature. 30; 13-17. DOI: 10.3417/2022304
