Abstract
Until recently, Passiflora cerasina was known only from two herbarium specimens. Three botanical expeditions in French Guiana, in 2008, 2009, and 2017, have greatly improved our knowledge on its geographical distribution and morphological variation. A key to the Guianese species of series Laurifoliae is given. As the holotype mentioned in the original description is missing, we propose a neotype collected from the locus classicus.
Highlights
Passiflora L. is the most important genus of the family Passi floraceae (Juss. ex Roussel), native to tropical America, SouthEast Asia and Oceania
To help identify species from series Laurifoliae in French Guiana and Suriname, we present a determination key
Our study extends the variability of the morphological characters of P. cerasina and adds new characters, absent from the original description: pubescence on young parts and styles, variability of bract and perianth color
Summary
Passiflora L. is the most important genus of the family Passi floraceae (Juss. ex Roussel), native to tropical America, SouthEast Asia and Oceania. Supersection Laurifolia (Cervi) Feuillet & MacDougal is part of subgenus Passiflora It includes the morphologically very homogenous series Laurifoliae Killip ex Cervi, with a very difficult taxonomy. It is composed of 20 species (Rome & Coppens d’Eeckenbrugge 2019) of glabrous to pubescent plants, with stems that are terete to angular, and sometimes corky on old parts; leaves are entire, oblong-lanceolate, not peltate, with entire to glandular-serrulate margins and biglandular petioles; stipules are setaceous or linear, early deciduous. Their three bracts, free at base, with entire or serrulate-glandular margins, are more than 1 cm long. They are valued for their soft and sweet pulp and some species are cultivated, including P. laurifolia L
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