Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Fabales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Strophostyles helvola
FAMILY
Fabaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Annual Sand Bean from the Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Strophostyles helvola
FAMILY
Fabaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Strophostyles helvola
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT) Floristic Synthesis of North America (Kartesz, 1999)
Strophostyles helvula
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 098-46-001:
Strophostyles helvola FAMILY Fabaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Strophostyles helvola
COMMON NAME:
Annual Sand Bean, Beach Pea, Trailing Wild Bean, Trailing Fuzzy-Bean
To see larger pictures, click or hover over the thumbnails.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_sthe4_001_lvd
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_sthe9_001_lvd
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JK Marlow jkm140831_175
August Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm180814_3770
August McCormick County SC
Parks Mill
)
Roxanna Martin rlm82209_156b
August Spartanburg County SC
Critter.
)
Roxanna Martin rlm82510_36
August Spartanburg County SC
Legume (3.5)5-10cm long, 5-8mm broad, sparsely appressed-pubescent, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Roxanna Martin rlm82510_38
August Spartanburg County SC
Keel w a distinctly curved, slender beak projected away from the standard, per Phylogenetic Systematics of Strophostyles (Fabaceae) (Riley-Hulting, 2004).
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Roxanna Martin rlm82708_091
August Spartanburg County SC
Leaflets usually prominently 3-lobed; terminal leaflet 2.5-3.5cm wide, per Weakley's Flora.
COMPARE
leaves that are trifoliolate and pinnately compound
)
JK Marlow jkm100903_601
September Greenville County SC
Swamp Rabbit Trail
Leaflets usually have one or two lateral lobes, per Wildflowers of Tennessee (Carman, 2005).
)
JK Marlow jkm100903_604
September Greenville County SC
Swamp Rabbit Trail
Stems glabrous to spreading-pilose, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm180913_4704
September Greenville County SC
Flowers of this genus have a keel strongly curved upward forming a beak, per Wildflowers of the Southern Mountains (Smith, 1998).
)
JK Marlow jkm180913_4708
September Greenville County SC
)
JK Marlow jkm180914_4724
September Greenville County SC
)
JK Marlow jkm180914_4726
September Greenville County SC
Leaflets have petiolules and stipels, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm180914_4730
September Greenville County SC
Bracteoles (immediately subtending calyx) equal or exceed the calyx tube, per Weakley's Flora.
)
Roxanna Martin rlm9410_364
September Spartanburg County SC
Petals roseate to purplish, often turning greenish, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Roxanna Martin rlm10811_171
October Spartanburg County SC
Leaflets ovate or rhombic-ovate to ovate-oblong or commonly 3-lobed, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm231104_6564
November Horry County SC
Myrtle Beach State Park
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Strophostyles helvola
FAMILY
Fabaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Strophostyles helvola
FAMILY
Fabaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Strophostyles helvola
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT)
Floristic Synthesis of North America (Kartesz, 1999)
Strophostyles helvula
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 098-46-001:
Strophostyles helvola
FAMILY
Fabaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Strophostyles helvola
1470
Herbaceous vine
Annual
Habitat: Coastal dunes, beaches, dry sandy woodlands, disturbed areas, per Weakley's Flora
Native to the Carolinas & Georgia
Common (rare in NC Mountains)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Odd-pinnately compound: 3 leaflets
Mostly alternate
Leaves have petioles.
Leaflets have petiolules.
Stipules are persistent.
Leaflets are subtended by stipels.
FLOWER:
Summer/Fall
Rose/ Purplish
Bilaterally symmetrical
2-lipped 5-lobed campanulate calyx (upper lobes united, so it appears 4-lobed)
5-parted papilionaceous corolla
10 stamens, diadelphous, 9 and 1
Superior ovary
Flowers in axillary racemes
FRUIT:
Summer/Fall
Legume
TO LEARN MORE about this plant, look it up in a good book!
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p495
- Newcomb's Wildflower Guide (Newcomb, 1977) p110
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p342
- Wildflowers of the Carolina Lowcountry (Porcher, 1995) p083
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p041
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p205
- Wildflowers of Tennessee (Carman, 2005) p140
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p177
- Wildflowers of the Southern Mountains (Smith, 1998) p078
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