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| parent_authority = Rose (1906)
| parent_authority = Rose (1906)
| species = constrictum
| species = constrictum
| authority = (S.Watson) Rose (1906)
| authority = ([[Sereno Watson|S.Watson]]) [[Joseph Nelson Rose|Rose ]](1906)
| synonyms =
| synonyms =
*''Cracca constricta'' {{small|(S.Watson) Tidestr. (1935)}}
*''Cracca constricta'' {{small|(S.Watson) Tidestr. (1935)}}
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'''''Sphinctospermum''''' is a genus of [[flowering plant]]s in the [[legume]] family, [[Fabaceae]]. It belongs to the subfamily [[Faboideae]]. It is a monotypic genus, containing the single species '''''Sphinctospermum constrictum'''''. It is native to North America, where it occurs in western and central Mexico and in Arizona in the southwestern United States.<ref name = powo/><ref name=tnc>[https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.143530/Sphinctospermum_constrictum ''Sphinctospermum constrictum''.] NatureServe Explorer.</ref><ref name=lavindoyle>Lavin M. & J. J. Doyle. 1991. [https://www.jstor.org/stable/2418980?seq=1 Tribal relationships of ''Sphinctospermum'' (Leguminosae): Integration of traditional and chloroplast DNA data.] ''Systematic Botany'' Vol. 16, No. 1 pp. 162–172.</ref> The plant is known by the common name '''hourglass peaseed'''.<ref>[https://plants.usda.gov/core/profile?symbol=SPCO3 ''Sphinctospermum constrictum''.] USDA NRCS Plants Database.</ref>
'''''Sphinctospermum''''' is a genus of [[flowering plant]]s in the [[legume]] family, [[Fabaceae]]. It belongs to the subfamily [[Faboideae]]. It is a monotypic genus, containing the single species '''''Sphinctospermum constrictum'''''. It is native to North America, where it occurs in western and central Mexico and in Arizona in the southwestern United States.<ref name = powo/><ref name=tnc>[https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.143530/Sphinctospermum_constrictum ''Sphinctospermum constrictum''.] NatureServe Explorer.</ref><ref name=lavindoyle>Lavin M. & J. J. Doyle. 1991. [https://www.jstor.org/stable/2418980?seq=1 Tribal relationships of ''Sphinctospermum'' (Leguminosae): Integration of traditional and chloroplast DNA data.] ''Systematic Botany'' Vol. 16, No. 1 pp. 162–172.</ref> The plant is known by the common name '''hourglass peaseed'''.<ref>[https://plants.usda.gov/core/profile?symbol=SPCO3 ''Sphinctospermum constrictum''.] USDA NRCS Plants Database.</ref>


This species occurs in [[grasslands]] and dry forests. It grows in sandy soils and is more common in wet years.<ref name=tnc/>
This species occurs in [[grassland]]s and dry forests. It grows in sandy soils and is more common in wet years.<ref name=tnc/>


==References==
==References==

Latest revision as of 13:07, 2 April 2024

Sphinctospermum

Apparently Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Robinieae
Genus: Sphinctospermum
Rose (1906)
Species:
S. constrictum
Binomial name
Sphinctospermum constrictum
(S.Watson) Rose (1906)
Synonyms[2]
  • Cracca constricta (S.Watson) Tidestr. (1935)
  • Tephrosia constricta S.Watson (1889)

Sphinctospermum is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae. It is a monotypic genus, containing the single species Sphinctospermum constrictum. It is native to North America, where it occurs in western and central Mexico and in Arizona in the southwestern United States.[2][1][3] The plant is known by the common name hourglass peaseed.[4]

This species occurs in grasslands and dry forests. It grows in sandy soils and is more common in wet years.[1]

References[edit]

  1. ^ a b c Sphinctospermum constrictum. NatureServe Explorer.
  2. ^ a b Sphinctospermum constrictum (S.Watson) Rose. Plants of the World Online. Retrieved 20 September 2023.
  3. ^ Lavin M. & J. J. Doyle. 1991. Tribal relationships of Sphinctospermum (Leguminosae): Integration of traditional and chloroplast DNA data. Systematic Botany Vol. 16, No. 1 pp. 162–172.
  4. ^ Sphinctospermum constrictum. USDA NRCS Plants Database.

External links[edit]

Further reading[edit]

Lavin, M. 1990. The genus Sphinctospermum (Leguminosae): Taxonomy and tribal relationships as inferred from a cladistic analysis of traditional data. Systematic Botany Vol. 15, No. 4 pp. 544–559