Polygala appendiculata |
Polygala chapmanii |
|
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swamp milkwort |
Chapman's milkwort |
|
Habit | Herbs annual, single-stemmed, (1–)2–5(–6) dm, branched distally; from taproot, usually quickly becoming fibrous root cluster. | Herbs annual, usually single-stemmed, rarely multi-stemmed, 2–5 dm, unbranched or few branched distally; from taproot, sometimes becoming fibrous root cluster. |
Stems | erect, glabrous. |
erect, glabrous. |
Leaves | alternate; sessile or subsessile; blade linear to subfiliform, 8–25 × 0.5–1 mm, base obtuse to cuneate, apex acute to acuminate, surfaces glabrous. |
alternate; sessile or subsessile; blade linear to narrowly elliptic proximally, or linear-subulate distally, 6–23 × (0.5–)1(–2) mm, base cuneate, apex acute to acuminate, surfaces glabrous. |
Racemes | cylindric, 1.5–13 × 0.5–0.6 cm; peduncle 0.5–1 cm; bracts deciduous, narrowly lanceolate-ovate. |
capitate to densely cylindric, 0.7–3(–4) × 0.6–1.3 cm; peduncle 0.3–2 cm; bracts persistent, often with scattered deciduous ones as well, lanceolate-ovate. |
Pedicels | 0.8–1 mm, glabrous. |
0.7–1.6 mm, glabrous. |
Flowers | usually purplish pink or lavender-pink, rarely white, 1.6–2.2 mm; sepals ovate to narrowly lanceolate-ovate, 0.6–1 mm; wings obovate or elliptic, 1.5–2 × 0.8–1 mm, apex obtuse to bluntly rounded; keel 1.5–2 mm, crest 2-parted, with 2–3 lobes on each side. |
pink or pale purple, 2.8–4 mm; sepals ovate or lanceolate-ovate, 0.6–1.3 mm; wings ovate or elliptic, 2.5–3.3(–3.8) × 1.7–2 mm, apex obtuse to bluntly rounded; keel 2.8–4 mm, crest 2-parted, with 1 lobe on each side, other lobes reduced to low, blunt processes. |
Capsules | oblong to ellipsoid, 1.4–2 × 0.7–1.1 mm, margins not winged. |
subglobose, 1.5–2.3 × 1.5–2.3 mm, margins not winged. |
Seeds | 1–1.2 mm, pubescent; aril 0.1(–0.2) mm, lobes less than 1/8 length of seed. |
1–1.5 mm, pubescent; aril 0.5–0.8 mm, lobes 1/3–1/2 length of seed. |
2n | = 72. |
|
Polygala appendiculata |
Polygala chapmanii |
|
Phenology | Flowering spring–early summer. | Flowering spring–summer. |
Habitat | Savannas, pastures, bogs, open pine woods, pond margins. | Wet flatwoods, bogs. |
Elevation | 0–100 m. (0–300 ft.) | 0–100 m. (0–300 ft.) |
Distribution |
FL; LA; MS; TX; Central America; South America; Mexico (Campeche, México, Michoacán, Tabasco, Veracruz); West Indies
|
AL; FL; GA; LA; MS
|
Discussion | Polygala appendiculata is part of a widespread complex in Latin America, potentially representing more than one evolutionary lineage. Even if found to be a single lineage, it is one with a complicated nomenclatural history (J. F. B. Pastore 2013). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Polygala chapmanii occurs almost exclusively in the coastal counties (or one county removed) of the Gulf Coast, from eastern Louisiana to northwestern Florida, with the exception of an outlying occurrence in Georgia and a few counties in Alabama. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 10. | FNA vol. 10. |
Parent taxa | Polygalaceae > Polygala | Polygalaceae > Polygala |
Sibling taxa | ||
Synonyms | P. leptocaulis | |
Name authority | Vellozo: Fl. Flumin., 292. (1829): plate 66. (1831) | Torrey & A. Gray: Fl. N. Amer. 1: 131. (1838) |
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