El género Passiflora es el más representativo de la familia Passifloraceae con más de 557 especies distribuidas ampliamente en zonas tropicales. El presente estudio es una contribución con la identificación de las especies del género Passiflora, así como también de los parámetros poblacionales de las mismas en la Comunidad de Yanatile del Distrito de Santa Teresa – La Convención - Cusco. El estudio compila información taxonómica como descripciones de las especies encontradas, claves dicotómicas para la identificación de subgéneros, supersecciones, secciones y especies. Como resultado del estudio realizado se registraron un total de 314 individuos representando 1 O especies silvestres Passiflora adenopoda, P. menispermifolia, P. pascoensis, P. cisnana, P. subulata, P. inca, P. quadriflora, P. praemorsa sp. nov., P. tripartita var mollissima, P. tripartita var. tripartita ...

The taxonomically difficult genus Polylepis (Rosaceae) contains several problematic species complexes, including one around P. sericea. We here reevaluate species boundaries in this complex based on morphological characters and climatic niches. We recognize five species within the P. sericea complex, based primarily on leaf characters: P. albicans (northwestern Peru), P. argentea (central Peru) described here, P. canoi (southeastern Peru to central Bolivia), P. ochreata (Ecuador to southernmost Colombia), and P. sericea (Venezuela to central Colombia). We provide full synonymy, diagnostic notes, lists of selected specimens examined, and a key to the species of the complex.

The network of minor veins of angiosperm leaves may include loops (reticulation). Variation in network architecture has been hypothesized to have hydraulic and also structural and defensive functions.We measured venation network trait space in eight dimensions for 136 biomass-dominant angiosperm tree species along a 3,300 m elevation gradient in southeastern Peru. We then examined the relative importance of multiple ecological and evolutionary predictors of reticulation.Variation in minor venation network reticulation was constrained to three axes. These axes described reconnecting vs. branching veins, elongated vs. compact areoles compact vs. elongated and low vs. high-density veins. Variation in the first two axes was predicted by traits related to mechanical strength and secondary compounds, and in the third axis by site temperature.Synthesis. Defensive and structural factors primaril...