Antennaria species

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Scientific Name Antennaria anaphaloides USDA PLANTS Symbol ANAN2
Common Name Pearly Pussytoes, Tall Pussytoes ITIS Taxonomic Serial No. 36720
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine (6000 to 12000 ft.); dry meadows, open areas, aspen groves, hillsides.
Plant: Perennial 8 to 20 inches tall, depending on altitude; one or more stems, no stolons; dioecious; pubescent stems and leaves with short, fine hairs.
Leaves: Basal leaves narrowly oblanceolate or elliptic; stem leaves oblanceolate or linear; grey-green, 2 to 8 inches long.
Inflorescence: Small white to slightly brownish, rayless flowers clustered in corymbiform arrays of 8 to 30; white phyllaries with dark brown/black spot in the middle surround fine pappus hairs in center.
Bloom Period: June to August.
Reference: "Flora of Colorado" by Jennifer Ackerfield, "Guide to Colorado Wildflowers" by G.K. Guennel, SEINet and www.americansouthwest.net.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Antennaria media USDA PLANTS Symbol ANME2
Common Name Rocky Mountain Pussytoes ITIS Taxonomic Serial No. 185151
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Subalpine and alpine (10000 to 14000 ft.); meadows, scree, tundra.
Plant: Mat-forming perennial 2 to 5 inches tall, short stolons less than 2 inches long; hairy foliage; dioecious but pistillate plants predominate.
Leaves: Oblanceolate to spatulate basal leaves 1/4 to 1 inch long, tips mucronate; shorter, pointed linear stem leaves; both with tiny hairs on upper surfaces.
Inflorescence: Clusters of 2 to 5 (or more) small ray-less flowers in corymbiform arrays; brown to greenish-black phyllaries surround fine pappus hairs of florets.
Bloom Period: July and August.
References: “Flora of Colorado” by Jennifer Ackerfield, SEINet and www.americansouthwest.net.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Antennaria parvifolia USDA PLANTS Symbol ANPA4
Common Name Small-leaf Pussytoes ITIS Taxonomic Serial No. 36749
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Plains to montane (4600 to 9500 ft.); dry, sunny meadows, rocky slopes.
Plant: Mat-forming perennial with stolons; woolly foliage; 1 to 6 inches tall; dioecious but pistillate plants predominate.
Leaves: Spatulate or oblanceolate basal leaves up to 1-1/3 inches long, tips mucronate; shorter, pointed linear to narrowly oblanceolate stem leaves; both with woolly hairs on both surfaces.
Inflorescence: Clusters of 2 to 7 small ray-less flowers; tiny brush-like tubular pistillate florets with fine pappus hairs; staminate flowers smaller and rounded with protruding brown stamens from each floret; membrane-like phyllaries in layers white to green or pink, red or brown surround corollas.
Bloom Period: May to July.
References: “Flora of Colorado” by Jennifer Ackerfield, SEINet and www.americansouthwest.net.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Antennaria umbrinella USDA PLANTS Symbol ANUM
Common Name Umber Pussytoes ITIS Taxonomic Serial No. 36761
Family Asteraceae (Sunflower) SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine (7500 to 13000 ft.); dry meadows, rocky slopes and open.
Plant: Perennial, dioecious, mat-forming with hairy foliage; 3 to 8 inches tall with usually erect stolons.
Leaves: Basal leaves spatulate to narrowly oblanceolate, 3/8 to 3/4-inch long, tips mucronate; stem leaves linear less than 3/4-inch long; both are one-nerved and have white-hairy upper and lower surfaces.
Inflorescence: Small whitish yellow to pale brown flowers clustered in corymbiform arrays of 3 to 8; no ray flowers; plants with either staminate or pistillate flowers; phyllaries may have pinkish tint; staminate flowers with wide, blunt phyllaries; pistillate flowers with narrower, more pointed phyllaries.
Bloom Period: June to August.
Reference: “Flora of Colorado” by Jennifer Ackerfield, Flora of North America and www.americansouthwest.net.
Note: Both staminate and pistillate plants are shown in the images below.
BONAP Distribution Map

Colorado Status:
Native

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© Tom Lebsack 2021