
Redwood Sorrel
oxalis smalliana
Redwood Sorrel (Oxalis smalliana), also known as Small's woodsorrel, is an elegant perennial herb that flourishes on the damp, shaded floors of temperate forests. Famous for its delicate clover-like leaves, this plant forms lush, velvety carpets under dense forest canopies where direct sunlight rarely penetrates. It has evolved a highly sensitive nature: when exposed to intense light or dry conditions, its leaflets fold neatly downward to conserve precious moisture and protect its photosynthetic machinery, only to reopen when gentle shade returns. During the spring and summer months, it produces small, pristine white to light pink five-petaled blossoms that stand out brilliantly against the dark forest floor. This resilient understory species plays a critical role in stabilizing forest soils and maintaining understory humidity, making it a key component of its native woodland ecosystems.
Lebensraum: Typically found in moist, deeply shaded temperate woodlands and mountain valleys, thriving on humus-rich soils near forest streams.
Aussehen
Redwood Sorrel features clusters of three heart-shaped leaflets, each about 1 to 3 centimeters wide, connected to delicate, reddish-green petioles rising directly from underground rhizomes. The leaves are a vibrant emerald green on top, sometimes showing a lighter chevron pattern, while their undersides can carry a subtle purplish tint. Its solitary, cup-shaped flowers measure roughly 1.5 to 2 centimeters across and consist of five overlapping petals. These petals are white to pale lavender-pink, decorated with fine, darker pink veins that converge toward a bright yellow center.

Kategorie
PflanzenSeltenheit
Common
Gefahr
1/5 · Sehr gering
Snaps
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Interessante Fakten
It spreads effectively through underground rhizomes, allowing a single plant to form vast, interconnected clonal colonies over time.
Its rapid leaf-folding reaction is a form of rapid plant movement, triggered by changes in turgor pressure within specialized cell joints called pulvini.
The plant contains oxalic acid, which gives its leaves a tart, green-apple flavor often compared to sorrel, though consuming large amounts can be toxic.
Besondere Fähigkeiten
Nyctinastic Folding
The leaves fold downward along their center vein during intense sunlight or at night to minimize water loss and protect delicate leaf tissue.
Extreme Shade Tolerance
It can efficiently carry out photosynthesis in low-light environments, utilizing less than one percent of direct sunlight.
Oxalic Acid Protection
Accumulates high concentrations of oxalic acid in its cells, giving the plant a sour taste that deters many generalist herbivores.
Maße und Details
- Länge
- 5-15 cm
- Lebenserwartung
- 3-8 Jahre
Ernährung und Fütterung
As a photoautotroph, it produces its own energy by capturing sunlight and converting carbon dioxide and water into sugars.
Hauptnahrung
- Sunlight
- Water
- Carbon dioxide
- Soil nitrogen
Ökologische Zusammenhänge
Japanese Cedar
Cryptomeria japonica
Provides the dense canopy shade and acidic leaf litter necessary for the sorrel to thrive.
Sika Deer
Cervus nippon
Occasionally grazes on the leaves as a minor part of its herbaceous diet.
Asian Honey Bee
Apis cerana
Visits the spring blossoms to collect nectar, acting as a primary pollinator.
Merkmale
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Sicherheit
Gefahr
1/5 · Sehr gering
Noch keine besonderen Sicherheitshinweise.
Häufig gestellte Fragen
Wie identifiziert man Redwood Sorrel?
Der einfachste Weg, Redwood Sorrel zu bestimmen, ist die Verwendung der Naturführer-App Snappit.
Was ist der/die/das länge von Redwood Sorrel?
5-15 cm
Was ist der/die/das lebenserwartung von Redwood Sorrel?
3-8 Jahre
Was frisst Redwood Sorrel?
As a photoautotroph, it produces its own energy by capturing sunlight and converting carbon dioxide and water into sugars.
Wo findet man Redwood Sorrel normalerweise?
Typically found in moist, deeply shaded temperate woodlands and mountain valleys, thriving on humus-rich soils near forest streams.
Snap-Karte
Zoome hinein, um Cluster aufzulösen und zu sehen, wo dieses Objekt fotografiert wurde.
Neueste Snaps
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Wo zu sehen

California, US
Armstrong Redwoods State Natural Reserve
Hier kann man sehen Redwood Sorrel, Küstenmammutbaum und Button's Banana Slug.
Führer anzeigen →

California, US
Benbow Lake State Recreation Area
Hier kann man sehen Küstenmammutbaum und Pazifische Dreiblattblume.
Führer anzeigen →
US
Mendocino and Headlands Historic District
Hier kann man sehen Button's Banana Slug, Ochre Sea Star und Bat Star.
Führer anzeigen →








