Juncus bufonius |
Juncus georgianus |
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common toad rush, toad rush |
Georgia rush |
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Habit | Herbs, annual, cespitose, 0.5–4 dm. | Herbs, short-lived perennial, cespitose, to 4 dm. |
Culms | 1–many, occasionally becoming decumbent. |
3–40. |
Cataphylls | 0–2. |
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Leaves | basal and cauline; auricles rudimentary or absent; blade flat, 3–13 cm × 0.3–1.1 mm. |
basal, 2–3; auricles 0.2–0.3 mm, scarious to membranous; blade flat, 5–15 cm × 0.4–0.7 mm, margins entire. |
Inflorescences | loose and diffuse or less often compact, usually at least ½1/2 total height of plant; primary bract shorter than inflorescence. |
(3–)8–30(–45)-flowered, diffuse, 3–11 cm; primary bract rarely surpassing inflorescence. |
Flowers | bracteoles 2; tepals greenish, lanceolate, 3.8–7(–8.5) mm; inner series slightly shorter, apex sometimes obtuse; stamens 3–6, filaments (0.7–)1–1.8 mm, anthers 0.3–0.8 mm; style 0.1–0.2 mm. |
bracteoles 2; tepals greenish to tan, lanceolate, (3.3–)3.6–5.1(–5.7) mm; outer and inner series nearly equal, apex acuminate; stamens 6, filaments 0.2–0.4 mm, anthers (0.8–)1.2–1.5(–1.7) mm; style 0.6–0.8 mm. |
Capsules | tan to reddish brown, 3-locular, ellipsoid to narrowly so, slightly truncate, 2.7–4 × 1–1.5 mm, sometimes exceeding inner tepals but usually not outer series. |
tan, 3-locular, ellipsoid to narrowly so, 2.7–4 × 1.2–1.7 mm. |
Seeds | yellowish, widely ellipsoid to ovoid, 0.26–0.49, not tailed. |
tan, ellipsoid or widely so, 0.364–0.45 mm, not tailed. |
2n | = 27–37, 58–81, 108–115. |
= ca. 80. |
Juncus bufonius |
Juncus georgianus |
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Phenology | Flowering and fruiting spring–early fall. | Flowering and fruiting spring. |
Habitat | Moist soils in meadows, along lakeshores or stream banks, ditches, or roadsides, especially frequent in drawdown areas, usually in open sites and often becoming weedy | Exposed sites with thin, usually sandy soil over surfacing granite (flatrocks), the soil in these areas may be moist in the spring from seepage or for a short period after rainfalls |
Elevation | 300–600 m (1000–2000 ft) | |
Distribution |
AK; AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; ON; PE; QC; SK; YT; Greenland; nearly worldwide
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AL; GA; NC; SC |
Discussion | Nearly worldwide, Juncus bufonius is found essentially throughout North America except north of the Alaskan and Canadian tTaiga. Juncus bufonius is a highly polymorphic complex that is poorly understood systematically. Insufficient evidence exists upon which to base the segregation of the plethora of taxa that have been recognized out of this group in the past. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Juncus > subg. Poiophylli | Juncaceae > Juncus > subg. Poiophylli |
Sibling taxa | ||
Synonyms | J. bufonius var. congestus, J. bufonius var. halophilus, J. bufonius var. hybridus, J. bufonius var. occidentalis, J. bufonius var. ranarius, J. congestus, J. ranarius | |
Name authority | Linnaeus: Sp. Pl. 1: 328. (1753) | Coville: Bulletin of the Torrey Botanical Club 22:44. (1895) |
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