Core Viewpoint - The article highlights the potential dangers of ornamental plants, emphasizing that certain species contain toxic compounds that can lead to poisoning if mishandled or ingested [1]. Group 1: Toxic Ornamental Plants - **Dieffenbachia (Dumb Cane)**: Contains calcium oxalate crystals and alkaloids; skin contact can cause irritation, and ingestion can lead to severe throat swelling and potential suffocation [2]. - **Money Tree (Pachira aquatica)**: Its sap can cause skin inflammation and allergic reactions; contact with eyes may result in conjunctivitis [3][4]. - **Nerium Oleander (Oleander)**: All parts are toxic due to the presence of cardiac glycosides; ingestion can cause nausea, vomiting, and potentially fatal heart issues [4][5]. - **Cycas (Sago Palm)**: Contains cycasin, which can cause vomiting and abdominal pain; long-term ingestion poses a cancer risk [6][7]. Group 2: Safety Tips - **Identification**: Consumers should familiarize themselves with the characteristics of plants before purchase or care [8]. - **Placement**: Plants should be kept out of reach of young children and pets to prevent accidental ingestion [8]. - **Protective Measures**: Use tools for maintenance and wash hands thoroughly after handling plants [8]. - **Emergency Response**: In case of contact or ingestion, immediate washing and medical consultation are advised [8].

Core Viewpoint - The article highlights the presence of toxic plants in public spaces, emphasizing the need for awareness and caution among the public, especially hikers, regarding plants like "断肠草" (Yángjiǎo ào) and others that can cause poisoning if ingested or improperly handled [1][3][9]. Group 1: Toxic Plants and Their Characteristics - "断肠草" (Yángjiǎo ào), also known as "羊角拗," is a common plant in the Lingnan region, with its fruit resembling a goat's horn. It has medicinal properties but is highly toxic, especially the seeds, and should not be touched or consumed [3][9]. - Other toxic plants mentioned include "夹竹桃" (Jiāzhútáo), which is widely used in landscaping but is entirely toxic, and "滴水观音" (Dīshuǐ Guānyīn), which can cause skin irritation and gastrointestinal issues if ingested [3][5]. - "海杧果" (Hǎi Mángguǒ) is another toxic plant found in parks, with its fruit being highly poisonous, leading to severe symptoms if consumed [7][9]. Group 2: Ecological Importance and Management - Despite their toxicity, these plants play significant ecological roles, such as stabilizing soil and providing habitat, which is crucial for maintaining biodiversity [9][10]. - Effective management strategies are suggested, including relocating highly toxic plants and using informative signage to educate the public about the risks associated with less toxic species [11]. - Community efforts, such as guided tours to educate the public about plant toxicity, are being implemented to promote safety while fostering an understanding of natural ecosystems [11][10].