UW Burke Herbarium species comparison

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Hypericum majus

Hypericum calycinum

greater Canadian St. John's-wort

Aaron's beard, great St. John's-wort
Habit Perennial from short, leafy rhizomes, the stems upright, 1-5 dm. tall, simple or branched above.
Leaves

Leaves opposite, sessile, lanceolate to oblong, rounded, 1-3.5 cm. long, 5- to 7-nerved.

Flowers

Inflorescence of terminal cymes with small, linear bracts;

sepals 5, lanceolate, 4-7 mm. long;

petals 5, yellow, about equal to the sepals;

stamens 15-35, the filaments almost capillary, distinct;

styles 3, short.

Fruits

Capsule 3-celled.

Hypericum majus

Hypericum calycinum
Flowering time July-September May-July
Habitat Peatlands, shores, damp sand, and cranberry farms. Roadsides, cliffs, embankments, fields, parks, forest edge, wastelots, and other disturbed areas.
Distribution
Occurring on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Occurring west of the Cascades crest in Washington; southwestern British Columbia to California; also in eastern North America.
[WildflowerSearch map]
[BONAP county map]
Origin Both native and introduced from eastern North America Introduced from Turkey and Bulgaria
Conservation status Sensitive in Washington (WANHP) Not of concern
Sibling taxa
H. anagalloides, H. androsaemum, H. boreale, H. calycinum, H. canadense, H. ellipticum, H. maculatum, H. mutilum, H. perforatum, H. scouleri, H. tetrapterum
H. anagalloides, H. androsaemum, H. boreale, H. canadense, H. ellipticum, H. maculatum, H. majus, H. mutilum, H. perforatum, H. scouleri, H. tetrapterum
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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