Polygala balduinii

Nuttall

Gen. N. Amer. Pl. 2: 90. 1818. (as balduini)

Common names: Baldwin’s milkwort
Synonyms: Pilostaxis balduinii (Nuttall) Small P. carteri (Small) Small Polygala balduinii var. carteri (Small) R. R. Smith & D. B. Ward P. carteri Small
Treatment appears in FNA Volume 10.

Herbs annual or biennial, single to multistemmed, (1–) 2–6.5 dm, rarely branched proximalto inflorescences; from fibrous-root cluster. Stems erect, glabrous. Leaves with basal rosette sometimes present at anthesis, sometimes with­ered or nearly so; alternate; sessile or subsessile; basal blade obovate, to 12 mm wide, cauline blade obovate, elliptic, or narrowly spatulate, sometimes becoming linear distally, 3–25 × 1–5 mm, base cuneate or acute, apex usually rounded proximally, acute to obtuse distally, surfaces glabrous. Racemes in cymose-panicles, ± flat-topped, 1.5–12 × 2.5–6 cm; each stem with (3–) 5–20 (–40) racemose branches, 0.4–6 × 0.7–1.5 cm; central one nearly sessile, lateral ones with peduncle to 2 cm; bracts persistent, lanceolate-ovate. Pedicels winged, 0.6–1.2 mm, glabrous. Flowers usually white or cream, sometimes greenish tinged, drying white to brownish green, corolla usually becoming pale yellowish apically, 3–6 mm; sepals decurrent on pedicel, ovate, lanceolate, or linear-lanceolate, 1.6–2.5 mm; wings narrowly ovate to slightly obovate or elliptic, 2.8–4.8 × 0.9–1.7 mm, apex narrowing into apical cusp, 0.6–0.8 mm; keel 2–4 mm, crest 2-parted, with 3 2-fid (rarely entire) lobes on each side. Capsules depressed-suborbicular, 0.6–1 × 0.8–1.2 mm, margins not winged. Seeds 0.5–1 mm, pubescent; aril 0–0.4 mm, lobes absent, reduced to minute scales, or to 1/3–2/5 length of seed. 2n = 64, 68.


Phenology: Flowering year-round.
Habitat: Bogs, marshes, prairies, wet flatwoods, coastal swales, open degraded areas.
Elevation: 0–100 m.

Distribution

Ala., Fla., Ga., Miss., Tex., West Indies (Bahamas), West Indies (w Cuba)

Discussion

Plants from southern Florida have been recognized as var. carteri, based on their less robust stature and greener, less conspicuous inflorescences (R. R. Smith and D. B. Ward 1976). More specifically, extremes of var. carteri have more or less elongated racemes to 6 cm, bracts usually less than 2 mm, flowers cream to greenish white, seeds more than 0.6 mm, and arils a minute scale or absent, whereas extremes of var. balduinii have dense racemes to 3 cm, bracts usually more than 2 mm, flowers white, seeds less than 0.6 mm, and arils usually 0.2 mm (infrequently smaller). Such apparently distinctive features all intergrade and are not sharply geographically delineable; noting this, Smith and Ward stated that the northern limit of the variety was arbitrary.

Polygalaramosa is closely related to P. balduinii, despite the obvious contrast between the yellow-flowered (green when dry), loosely branched inflorescences of P. ramosa and the white or near-white, more compact inflorescences of P. balduinii. Hybrids occur and have been called P. balduinii var. chlorogena Torrey & A. Gray.

Selected References

None.

Lower Taxa

None.
... more about "Polygala balduinii"
acute +  and obtuse +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
narrowing +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
J. Richard Abbott +
Nuttall +
0 cm0 mm <br />0 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
acute +  and cuneate +
uniform +
pubescent +  and glabrous +
persistent +
lanceolate-ovate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
depressed-suborbicular +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
spatulate +, elliptic +  and obovate +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Baldwin’s milkwort +
pale yellowish +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reduced +
2-parted +
Ala. +, Fla. +, Ga. +, Miss. +, Tex. +, West Indies (Bahamas) +  and West Indies (w Cuba) +
0–100 m. +
sessile +  and pedicellate +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
white +  and brownish green +
in proximal leaf-axils +  and subterranean +
cleistogamous +  and chasmogamous +
0.1 cm1 mm <br />0.001 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
samaroid +  and pseudomonomerous +
glabrous +  and pubescent +
isodiametric +  and slightly oblong +
Bogs, marshes, prairies, wet flatwoods, coastal swales, open degraded areas. +
biennial +  and annual +
crested +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
subsessile +  and sessile +
cauline +  and basal +
3-2-fid +
reduced +  and minute +
leaf-opposed +, axillary +  and terminal +
glabrous +, ciliolate +  and ciliate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering year-round. +
syncarpous +  and 2[-8]-carpellate +
Gen. N. Amer. Pl. +
1.5 cm15 mm <br />0.015 m <br /> (12 cm120 mm <br />0.12 m <br />) +
flat-topped +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
usually brownish +  and whitish +
exfoliating +
ellipsoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
persistent +
linear-lanceolate +, lanceolate +, ovate +  and decurrent +
unequal +
0.16 cm1.6 mm <br />0.0016 m <br /> (?) +  and 0.25 cm2.5 mm <br />0.0025 m <br /> (?) +
prostrate +  and decumbent +
0.4 cm4 mm <br />0.004 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.7cm;1.5cm +
not +  and petiolate +
Pilostaxis balduinii +, P. carteri +  and Polygala balduinii var. carteri +
Polygala balduinii +
Polygala +
species +
crested +  and lobed +
persistent +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
narrowly ovate +  and slightly obovate or elliptic +
0.1 cm1 mm <br />0.001 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.9mm;1.7mm +