UW Burke Herbarium species comparison

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Hypericum majus

Hypericum mutilum

greater Canadian St. John's-wort

dwarf 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 mutilum
Flowering time July-September July-September
Habitat Peatlands, shores, damp sand, and cranberry farms. Shores, often where peaty.
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 western Washington; also in eastern North America, where native.
[WildflowerSearch map]
[BONAP county map]
Origin Both native and introduced from eastern North America Introduced from eastern North America
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. calycinum, H. canadense, H. ellipticum, H. maculatum, H. majus, 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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