familyPolygalaceae
genusPolygala
speciesPolygala leptostachys

Polygala leptostachys

Shuttleworth ex A. Gray

Smithsonian Contr. Knowl. 3(5): 41. 1852.

J. Richard Abbott
Common names: Threadleaf milkwort
Treatment appears in FNA Volume 10.
Revision as of 20:03, 7 June 2022 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Herbs annual, single-stemmed, 1.5–3.5 (–5) dm, unbranched or branched distally; from slender taproot, sometimes becoming fibrous-root cluster. Stems erect, glabrous. Leaves whorled, at least proximally, to alternate distally; sessile or subsessile; blade narrowly obovate to linear-spatulate proximally, linear to filiform distally, 3–30 × 0.5–1 (–2.5) mm, base cuneate, apex acute, surfaces glabrous. Racemes spikelike, narrowly cylin­dric, 0.5–6 × 0.2–0.4 cm; peduncle 0.7–3 cm; bracts deciduous, ovate to lanceolate-ovate. Pedicels 0–0.5 mm, glabrous. Flowers white or greenish white, 1.5–2.8 mm; sepals ovate to elliptic, 0.6–1.1 mm; wings elliptic or obovate, 1.5–2.6 × 0.8–1 mm, apex obtuse to bluntly rounded; keel 1.3–2.5 mm, crest 2-lobed, with 2 or 3 lobes on each side. Capsules ellipsoid to oblong, 1.7–2.2 × 1–1.5 mm, margins not winged. Seeds 1.5–2 mm, glabrous; aril 1 mm, lobes 1/2 length of seed.


Phenology: Flowering spring–summer.
Habitat: Sandhills, dry to xeric pine-oak woodlands.
Elevation: 0–100 m.

Distribution

Ala., Fla., Ga., Miss.

Discussion

Polygala leptostachys is most common in Florida and rare elsewhere in its range.

Selected References

None.

Lower Taxa

None.
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Anther dehiscence
dehiscent +
Anther fixation
basifixed +
Apex shape
obtuse +  and bluntly rounded +
Aril some measurement
1 cm10 mm <br />0.01 m <br /> (?) +
Author
J. Richard Abbott +
Authority
Shuttleworth ex A. Gray +
Base shape
cuneate +
Blade architecture
veined +
Blade atypical width
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Blade coloration or relief
punctate +
Blade growth form
dimorphic +
Blade length
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Blade position or structure subtype
secondary +
Blade prominence
obscure +
Blade shape
narrowly obovate +  and linear-spatulate proximally +
Blade size
uniform +
Blade surface pubescence
pubescent +  and glabrous +
Blade width
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Bract duration
deciduous +
Bract quantity
1 +
Bract shape
ovate +  and lanceolate-ovate +
Bracteole presence
absent +
Capsule length
0.17 cm1.7 mm <br />0.0017 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Capsule shape
ellipsoid +  and oblong +
Capsule width
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Common name
Threadleaf milkwort +
Corymb arrangement
fascicles +
Corymb size
reduced +
Crest pubescence
glabrous +
Crest shape
2-lobed +
Distribution
Ala. +, Fla. +, Ga. +  and Miss. +
Elevation
0–100 m. +
Fibrou-root arrangement
cluster +
Filament fusion
connate +
Flower architecture
sessile +  and pedicellate +
Flower architecture or shape
symmetric +
Flower arrangement
not grouped +
Flower atypical some measurement
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flower coloration
greenish white +  and white +
Flower coloration or density
purple +
Flower location
in proximal leaf-axils +  and subterranean +
Flower quantity
fewer +
Flower reproduction
cleistogamous +  and chasmogamous +
Flower some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
Fruits capsule architecture
samaroid +  and pseudomonomerous +
Fruits capsule dehiscence
dehiscent +
Fruits capsule pubescence
glabrous +  and pubescent +
Fruits capsule shape
isodiametric +  and slightly oblong +
Habitat
Sandhills, dry to xeric pine-oak woodlands. +
Herb architecture
branched +, unbranched +  and single-stemmed +
Herb architecture or growth form
multistemmed +
Herb atypical some measurement
3.5dm (5dm) +
Herb duration
annual +
Herb quantity
single +
Herb some measurement
1.5dm (3.5dm) +
Inflorescence position or structure subtype
terminal +
Keel shape
crested +
Keel some measurement
0.13 cm1.3 mm <br />0.0013 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Lateral inner sepal architecture
petaloid +
Lateral inner sepal fusion
adnate +
Lateral inner sepal size
expanded +
Lateral petal quantity
2 +
Lateral petal size
reduced +
Leaf architecture
subsessile +  and sessile +
Leaf arrangement
alternate +  and whorled +
Leaf position
cauline +  and basal +
Leaf presence
absent +
Leaf variability
uniform +
Lobe length
1/2 length of seed (?) +
Locule atypical quantity
2 (40) +
Lower petal life cycle
anthesis +
Lower petal quantity
1 +
Lower sepal quantity
2 +
Margin architecture
not winged +
Margin architecture or shape
entire +
Margin position
leaf-opposed +, axillary +  and terminal +
Margin pubescence
glabrous +, ciliolate +  and ciliate +
Number of lower taxa
0 +
Outer sepal quantity
1 +  and 3 +
Ovary architecture
2-loculed +
Ovary architecture or structure in adjective form
2[-8]-locular +
Ovary placentation
axile +
Ovary position
superior +
Ovule quantity
1 +
Pedicel architecture
winged +
Pedicel presence
absent +
Pedicel pubescence
glabrous +
Pedicel some measurement
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Peduncle presence
absent +
Peduncle some measurement
0.7 cm7 mm <br />0.007 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Petal quantity
3 +
Phenology
Flowering spring–summer. +
Pistil architecture
syncarpous +  and 2[-8]-carpellate +
Publication title
Smithsonian Contr. Knowl. +
Publication year
1852 +
Raceme architecture
interrupted +
Raceme length
0.5 cm5 mm <br />0.005 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Raceme shape
spikelike +
Raceme width
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Reference
None +
Rootstock coloration
usually brownish +  and whitish +
Rootstock relief
exfoliating +
Seed architecture
arillate +
Seed architecture or pubescence or relief
smooth +
Seed coloration
blackish +
Seed pubescence
glabrous +
Seed quantity
1 +
Seed shape
ellipsoid +
Seed some measurement
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Seeds coat architecture
arillate +
Seeds coat pubescence
pubescent +
Sepal arrangement
imbricate +
Sepal duration
persistent +
Sepal pubescence
glabrous +
Sepal quantity
5 +
Sepal shape
ovate +  and elliptic +
Sepal size
unequal +
Sepal some measurement
0.06 cm0.6 mm <br />6.0e-4 m <br /> (?) +  and 0.11 cm1.1 mm <br />0.0011 m <br /> (?) +
Shrub architecture
unarmed +
Shrub growth form
clonal +
Shrub reproduction
synoecious +
Slit height or length or size
short +
Species architecture
capsular +
Stamen atypical quantity
6 (8) +
Stamen quantity
8 +
Stem architecture or arrangement
lax +
Stem growth form or orientation
prostrate +  and decumbent +
Stem orientation
erect +
Stem pubescence
glabrous +
Stigma quantity
2 +
Stipule architecture
not +  and petiolate +
Stipule presence
absent +
Style quantity
1 +
Subapical pore quantity
1 +
Surface pubescence
glabrous +
Taxon family
Polygalaceae +
Taxon name
Polygala leptostachys +
Taxon parent
Polygala +
Taxon rank
species +
Upper petal arrangement or vernation
conduplicate +
Upper petal orientation
reflexed +
Upper petal quantity
2 +
Upper petal shape
crested +  and lobed +
Upper sepal quantity
2 +
Volume
Volume 10 +
Wing duration
persistent +
Wing length
0.15 cm1.5 mm <br />0.0015 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
Wing pubescence
glabrous +
Wing shape
obovate +  and elliptic +
Wing some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Wing width
0.8mm;1mm +