Background Species lists are fundamental for knowledge of species diversity in regions subject to intense anthropogenic pressure, especially in poorly-studied ecosystems. The dataset comes from an inventory conducted in 30 fragments of Myrtaceae swamp forest, located in an agroforestry matrix landscape of the coastal La Araucanía Region in Chile. The data collection was carried out using line transect sampling, which was traced through the core of each fragment orientated towards its longest axis. The dataset provides a record of 55 species (24 trees, 1 vine [as a host], 16 herbs and 15 shrubs) including accidental epiphytes (n = 7), hemiparasites (n = 4), host (n = 10) and additionally woody debris (n = 36). The most frequent trees in the landscape were Myrceugenia exsucca (n = 36 records) and Blepharocalyx cruckshanksii (n = 33 records), species that were also the most common hosts. Drimys winteri was a companion species, other trees and shrubs generally being rarely observed, as was the case of the introduced species (Prunus avium, Rubus constrictus and Ulex europaeus). Branches were the most common microhabitat for hemiparasites. Within this group, Lepidoceras chilense was the most frequent species. For accidental epiphytes, Drimys winteri, which commonly grows on the ground (soil), were the most common species found in the main trunk crotch. Some unusual observations were the climber Cissus striata as host of Tristerix corymbosus (hemiparasite) and Tristerix corymbosus as host of Lepidoceras chilense (hemiparasite). New information This study represents a landscape-scale sample of the swamp forest, which is distributed in a dispersed pattern over a large stretch of Chile. The data were collected from 30 forest patches (from 0.05 to 936 ha), located on the coast of the Araucanía. The database includes the presence of 55 species of vascular plants in 356 records. The main novelty of this contribution is the systematic classification of species under six traits, never before reported in the same database: (i) condition (coarse woody debris, fallen log, live, snag), (ii) habit (herb, shrub, tree), (iii) growth microhabitat (e.g. tree trunk, branch, main trunk crotch), (iv) growth form (accidental epiphyte, hemiparasite, terricolous, vegetative), (v) host species (as appropriate) and (vi) relative location of the species in the sampled patch and surrounding areas (core, border, matrix). Species not previously observed in these forests were: Gavilea spp., Hieracium spp., Lophosoria quadripinnata, Berberis actinacantha, Gaultheria phillyreifolia, Ovidia pillo-pillo, Amomyrtus meli and Caldcluvia paniculata. In addition, two introduced species are novelties for the catalogue of vascular plants of Chile (Cupressus macrocarpa and Prunus avium). Several of these ecosystem traits are indeed new reports for these types of forests (e.g. accidental epiphytes, fallen logs, species-host relationship); at the same time, more frequent data (i.e. species composition, habit) are found in different contributions, making the comprehensive process of analysis difficult. Accordingly, the database is made available in this manuscript.

中文翻译：

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沿海桃金娘科沼泽森林（智利拉阿劳卡尼亚地区）的树木、灌木和草本植物：数据集

背景 物种清单是了解遭受强烈人为压力的地区物种多样性的基础，尤其是在研究不足的生态系统中。该数据集来自对位于智利沿海 La Araucanía 地区农林业基质景观的 30 个桃金娘科沼泽森林碎片进行的清查。数据收集是使用线样断面采样进行的，该采样通过朝向其最长轴的每个片段的核心进行追踪。该数据集提供了 55 个物种（24 棵树、1 株藤 [作为宿主]、16 种草本植物和 15 种灌木）的记录，包括偶然的附生植物（n = 7）、半寄生虫（n = 4）、宿主（n = 10）以及另外木质碎片（n = 36）。景观中最常见的树木是 Myrceugenia exsucca（n = 36 条记录）和 Blepharocalyx cruckshanksii（n = 33 条记录），也是最常见的宿主。Drimys winteri 是一种伴生树种，一般很少观察到其他树木和灌木，如引入树种（Prunus avium、Rubus constrictus 和 Ulex europaeus）的情况。树枝是半寄生虫最常见的微生境。在这个组中，智利鳞翅目是最常见的物种。对于偶然的附生植物，通常生长在地面（土壤）上的 Drimys winteri 是在主干胯部发现的最常见的物种。一些不寻常的观察结果是攀缘者 Cissus striata 作为 Tristerix corymbosus（半寄生虫）的宿主和 Tristerix corymbosus 作为 Lepidoceras chilense（半寄生虫）的宿主。新信息 这项研究代表了沼泽森林的景观尺度样本，该样本以分散的方式分布在智利的大片地区。这些数据是从位于 Araucanía 海岸的 30 个森林斑块（从 0.05 到 936 公顷）收集的。该数据库包括 356 条记录中存在的 55 种维管植物。这项贡献的主要新颖之处在于对物种的六种特征的系统分类，以前从未在同一数据库中报告过：（i）状况（粗木碎片、倒下的原木、活的、树根），（ii）习性（草本植物、灌木、树），(iii) 生长微生境（例如树干、树枝、主干胯部），(iv) 生长形式（意外附生植物、半寄生植物、土生植物、植物性），(v) 宿主物种（视情况而定）和 (vi) 相对采样斑块和周围区域（核心、边界、矩阵）中物种的位置。以前未在这些森林中观察到的物种有：Gavilea spp.、Hieracium spp.、Lophosoria quadripinnata、Berberis actinacantha、Gaultheria phillyreifolia、Ovidia pillo-pillo、Amomyrtus meli 和 Caldcluvia paniculata。此外，智利维管植物目录中的两个引进物种（Cupressus macrocarpa 和 Prunus avium）是新物种。这些生态系统特征中的一些确实是这些类型森林的新报告（例如偶然的附生植物、倒下的原木、物种-宿主关系）；同时，在不同的贡献中发现了更频繁的数据（即物种组成、习性），使得分析的综合过程变得困难。因此，本手稿中提供了该数据库。这些生态系统特征中的一些确实是这些类型森林的新报告（例如偶然的附生植物、倒下的原木、物种-宿主关系）；同时，在不同的贡献中发现了更频繁的数据（即物种组成、习性），使得分析的综合过程变得困难。因此，本手稿中提供了该数据库。这些生态系统特征中的一些确实是这些类型森林的新报告（例如偶然的附生植物、倒下的原木、物种-宿主关系）；同时，在不同的贡献中发现了更频繁的数据（即物种组成、习性），使得分析的综合过程变得困难。因此，本手稿中提供了该数据库。