ABSTRACT A comparative study of the two recognized subspecies of Alstroemeria garaventae Ehr. Bayer in Chile was conducted using chromosomes and chloroplast DNA as sources of taxonomic evidence. Both characters indicate both subspecies as separate entities, supporting previous taxonomic hypotheses. Yet, nuclear DNA analyses will be necessary to confirm their taxonomic status.

ABSTRACT The karyotype of Alstroemeria violacea Phil. from Chile was described. The species presented a karyotype 2n = 2x = 16, and a haploid formula of 3m + 1st + 2st-sat + 1t + 1t-sat. The reported karyotype is asymmetric, with CVCL = 53.9 ± 7.5, MCA = 50.8 ± 6.4, and TLC = 236.5 ± 16.8 µm. The latter is discussed including data of other species. This is the first karyotypic report of A. violacea from wild populations in Chile.

ABSTRACT The Avendaño Lagoon is located in the Province of Diguillin, Ñuble Region, Chile and represents a very popular recreation area during the summer season. This note reports a floral list of the Lagoon Avendaño and its environs, which differ in their levels of anthropization. We compared five sites by measuring composition and specific richness of the vegetation associated to them. The most altered sites, based on the number of introduced species, corresponded to open and recreational areas. Herein, 113 spontaneous species of vascular plants are documented, including 6 Pteridophyta, 77 Dicotyledoneae, and 30 Monocotyledoneae. From these, 13.3% are endemic, 52.2 native, and 34.5% alien species. The most frequently represented families were Poaceae, Asteraceae, Cyperaceae and Scrophulariaceae. The purpose of this catalog was to describe the flora of vascular plant surrounding the body of water of this lagoon which has a large tourist importance for the Commune of Quillón, linking the plant composition with the land uses in its borders.

RESUMEN La Laguna Avendaño se ubica en la Provincia de Diguillín, dentro del macrobioclima Mediterráneo, Región de Ñuble, Chile, y constituye un importante centro de recreación durante los meses de verano. Se estudió la flora vascular presente en el cuerpo de agua y en sectores aledaños, los cuales difieren en el grado de antropización. Se compararon 5 sitios en cuanto a la composición y riqueza específica de ellos. Los sitios más alterados, en base al número de especies introducidas, corresponden a los lugares abiertos al público y de uso recreacional masivo. Se documenta la presencia de 113 especies de plantas vasculares que crecen espontáneamente, incluyendo 6 Pteridophyta, 77 Dicotyledoneae y 30 Monocotyledoneae. Del total de especies, 13,3% son endémicas de Chile, 52,2% nativas y 34,5% introducidas. Las familias mejor representadas son: Poaceae, Asteraceae, Cyperaceae y Scrophulariaceae. El objetivo de este catálogo fue describir la flora aledaña al cuerpo de agua de esta laguna que tiene una enorme importancia turística para la Comuna de Quillón, y por ende fuerte presión antrópica.

RESUMEN La presente nota ofrece una revisión de la distribución geográfica y variación morfológica de Schizopetalon arcuatum, dado que ambas variables han generado confusión en la identificación de esta especie críptica. Se espera que la información presentada ayude a resolver este problema en relación a sus especies vecinas o cercanamente relacionadas.

Abstract Alstroemeria L. (Alstroemeriaceae) represents one of the most diverse genera of vascular plants in Chile. It contains approximately 54 taxa, 40 of which are endemic. The “complex” Alstroemeria magnifica is endemic to Chile, and it comprises four varieties: A. magnifica var. magenta, A. magnifica var. magnifica, A. magnifica var. sierrae, and A. magnifica var. tofoensis. It is distributed from Coquimbo to the Valparaíso Region. We analyzed karyotypes of 10 populations along its natural distribution. All the populations presented an asymmetric karyotype, with 2n = 16 chromosomes but with three different karyotypic formulae. Alstroemeria magnifica var. magnifica and A. magnifica var. sierrae presented the same karyotypic fomula, and A. magnifica var. magenta, and A. magnifica var. tofoensis each had a different formula. The scatter plot among CVCL vs. MCA shows different groupings between populations of the four varieties. Based on the results, it is possible to consider raising Alstroemeria magnifica var. magenta to species level (A. magenta) and A. magnifica var. tofoensis to subspecies level (A. magnifica subsp. tofoensis); A. magnifica var. magnifica and A. magnifica var. sierrae should each remain as varieties. Nevertheless, these taxonomic changes should be considered tentative, as additional sources of evidence become available.