2006 Steve Matson 2006 Steve Matson 2006 Steve Matson 2017 Steve Matson 2017 Steve Matson 2006 Steve Matson 2019 Matt Berger 2020 Iuliia Lytvynova 2020 Iuliia Lytvynova 2020 Zoya Akulova-Barlow 2023 Cynthia Powell 2023 Cynthia Powell 2023 Cynthia Powell 2025 Mike Russler 2025 Mike Russler 2025 Mike Russler 2023 R.A. Chasey 2023 Alaine Arslan 2022 Julie A. Kierstead 2020 Shane Hanofee 2020 Bob Sweatt 2020 Bob Sweatt 2025 Mike Russler
Drosera rotundifolia is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Drosera: from the Greek droseros, "dewy," referring to the gland-tipped hairs on the leaves that make them look moist
Wikipedia: This plant feeds on insects. Insects are attracted to the glistening drops of mucilage, loaded with a sugary substance, covering its leaves. It has evolved this carnivorous behavior in response to its habitat, which is usually poor in nutrients or is so acidic that nutrient availability is severely decreased. The plant uses enzymes to dissolve the insects - which become stuck to the glandular tentacles - and extract ammonia (from proteins) and other nutrients from their bodies.[5] The ammonia replaces the nitrogen that other plants absorb from the soil, and plants that are placed in a high-nitrogen environment rely less upon nitrogen from captured insects.[6]
It has been assumed that insects were also attracted to the bright red color of the common sundew, but studies using artificial traps have suggested that color does not affect prey attraction.[7] New climates have been discovered with new plant growth but do not have the food associated with the requirements for growth. In areas that lack this food associated for growth, new studies have been conducted to determine how these plants are able to grow in these diverse climates where these plants area able to flourish. In a study by L.M. Thoren et al. posted in New Phytologist, the carnivory of the Drosera rotundifolia was tested against growing conditions where the insect prey of the plant was not sufficient to promote proper growth. The group tested the plants ability to grow with limited prey but increased inorganic nutrients within the soil. The results revealed the ability of the plant to utilize the nutrients over the normal prey which caused the reduction in carnivory investment of the plant. These results showed that the plant would adapt to the current environment for growth utilizing available resources as food.
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Suggested Citation
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025. Berkeley, California:The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 02/09/2025).