OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Rosales
Series: Parvifoliae    

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (10/20/20):
Crataegus uniflora   FAMILY Rosaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Crataegus uniflora   FAMILY Rosaceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 9 (2014)

Crataegus uniflora

SYNONYMOUS WITH Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)

Crataegus uniflora var. uniflora

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 097-20-001:

Crataegus uniflora   FAMILY Rosaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Crataegus uniflora

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)

Crataegus gregalis

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)

Crataegus pentaneura

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)

Crataegus raleighensis

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)

Crataegus uniflora

 

COMMON NAME:
Oneflower Hawthorn, Dwarf Haw


         To see larger pictures, click or hover over the thumbnails.

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_crun_001_lvd

        

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm230228_1303

February    Pickens County    SC

Glassy Mountain Heritage Preserve

Twigs: new growth densely appressed-pubescent, 1-year-old brown, older grayish, per Flora of North America.

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm200425_4270

April    Pickens County    SC

Glassy Mountain Heritage Preserve

The name "one-flowered" is not to be taken literally (up to 6 per inf.), per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm200425_4273

April    Pickens County    SC

Glassy Mountain Heritage Preserve

Its needlelike spines are more apt to be felt than seen, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm200425_4275

April    Pickens County    SC

Glassy Mountain Heritage Preserve

Leaves typically short-petiolate, prominently toothed, usually glossy, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm200425_4276

April    Pickens County    SC

Glassy Mountain Heritage Preserve

Shrubby habit, small leaves and slender thorns, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm200425_4278

April    Pickens County    SC

Glassy Mountain Heritage Preserve

Slender thorns (2-7cm long), per Weakley's Flora (2020).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Roxanna Martin    rlm42810_021

April    Spartanburg County    SC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Ron Lance    rwlcuniflora_1

April-May        SC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Alan S. Weakley    asw_1433075147536211

May    Granville County    NC

Calyx slightly elevated, lobes lanceolate, foliaceous, glandular-serrate, persistent on fruit, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Alan S. Weakley    asw_572153735049611

May    Granville County    NC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm200508_4685

May    Pickens County    SC

Glassy Mountain Heritage Preserve

Calyx broad, lobes 4-7mm long, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Roxanna Martin    rlm5110_049

May    Spartanburg County    SC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Roxanna Martin    rlm53010_464

May    Spartanburg County    SC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

Roxanna Martin    rlm71010_93

July    Spartanburg County    SC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm231010_5920

October    Pickens County    SC

Glassy Mountain Heritage Preserve

Fruit subglobose or pyriform, 7-12mm wide, green, yellow or red; flesh thin, dry or mealy, per Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014).

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm231010_5921

October    Pickens County    SC

Glassy Mountain Heritage Preserve

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm181101_5464

November    Greenville County    SC

image of Crataegus uniflora, Oneflower Hawthorn, Dwarf Haw

JK Marlow    jkm181101_5468

November    Greenville County    SC

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (10/20/20):
Crataegus uniflora   FAMILY Rosaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Crataegus uniflora   FAMILY Rosaceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 9
Crataegus uniflora

SYNONYMOUS WITH Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Crataegus uniflora var. uniflora

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 097-20-001:
Crataegus uniflora   FAMILY Rosaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Crataegus uniflora

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus gregalis

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus pentaneura

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus raleighensis

INCLUDING Beadle in Flora of the Southeastern US (Small, 1913)
Crataegus uniflora

 

Find by SCIENTIFIC NAME:

405

Shrub
Perennial

Habitat: Thin woodlands, disturbed lands, roadsides, rock outcrops, often in xeric or sub-xeric conditions, per Weakley's Flora

Native to the Carolinas & Georgia

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

IS THE PLANT "ARMED"?
Armed with very slender nodal thorns (> 3cm long, about 1mm in diameter)

LEAVES:
Deciduous
Simple
Alternate
Petioles 2-5mm, usually pubescent, sometimes black-glandular, esp in spring

FLOWER:
Spring
White
Radially symmetrical
5-lobed calyx
5 petals
Usually 20 stamens (anthers white, yellow or rarely pink)
Inferior ovary
Bisexual

Inflorescences of 1-6 flowers, usually 1

FRUIT:
Summer/Fall
Green, yellow or red
Pome

 

TO LEARN MORE about this plant, look it up in a good book!



 


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