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Linnaea borealis Observations
(twinflower)
Submit Data Observations
Introduction to the NPN Native Species Observation Program
Twinflower is a creeping, semi-woody perennial that grows in forested areas, meadows and near lakes and rivers. It can tolerate shady conditions. The tiny leaves (15 mm long) are nearly circular, with a small notched tip. While twinflower leaves are similar to those of bearberry, they can be differentiated by the presence of the notch and the fact that the leaves emerge in pairs. Twinflowers have tiny (9-16 mm) pink, bell-shaped flowers that occur in pairs on Y-shaped stalks. The dry, one-seeded fruits have small hooks to help their dispersal. After the flowers and fruits have faded, the evergreen leaves remain on the plant, often hidden under the winter snow.
Source: Plantwatch Canada
You should record when two well-defined phenological events occur for twinflower:
- First bloom (FB) First select an approximately 1 by 1 meter plot for observation, and then record the date when first flowers are open in at least three places on the observed plants.
- Mid bloom (MB) Within the same 1 by 1 meter plot used for first bloom, this is the date when 50% of the flowers are open on the observed plants.
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Report by email if any plant appears in poor health.
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