Overview

Distribution

Localities documented in Tropicos sources

Sideranthus megacephalus (Nash) Small:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Localities documented in Tropicos sources

Haplopappus phyllocephalus var. megacephalus (Nash) Waterf.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

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Localities documented in Tropicos sources

Machaeranthera phyllocephala (DC.) Shinners:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

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Localities documented in Tropicos sources

Haplopappus megacephalus (Nash) Hitchc.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

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Localities documented in Tropicos sources

Haplopappus phyllocephalus DC.:
Mexico (Mesoamerica)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

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National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Description

Annuals or perennials, 10–70(–100) cm, herbaceous to suffrutescent. Leaf blades oblong to oblanceolate, mid-cauline (2.5–)4–13 mm wide. Heads essentially sessile, often surpassed by distal leaves that continue to very base of heads. Involucres (6–)10–15 × 12–30 mm. Phyllaries in 3–4 series, loose, subequal, apices erect to spreading, 1.3–1.7 mm wide, herbaceous. Ray florets 17–38; corollas 8.5–19 mm. Disc florets: corolla tubes longer than limbs. 2n = 12.
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Diagnostic Description

Synonym

Haplopappus phyllocephalus de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 347. 1836 (as Aplopappus); H. phyllocephalus var. megacephalus (Nash) Waterfall; Machaeranthera phyllocephala (de Candolle) Shinners; M. phyllocephala var. megacephala (Nash) Shinners; Sideranthus megacephalus (Nash) Small
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Type Information

Type collection for Eriocarpum megacephalum Nash
Catalog Number: US 250103
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): G. V. Nash
Year Collected: 1895
Locality: Palmetto., Manatee, Florida, United States, North America
  • Type collection: Nash, G. V. 1896. Bull. Torrey Bot. Club. 23: 107.
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Ecology

Habitat

Depth range based on 8 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 1 - 1
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Conservation

Conservation Status

NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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