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sharpflower rush

Georgia rush

Habit Herbs, perennial, rhizomatous, to 8 dm. Herbs, short-lived perennial, cespitose, to 4 dm.
Rhizomes

5–6 mm diam., nodes not swollen.

Culms

erect, terete, 3 mm diam., smooth.

3–40.

Cataphylls

1, straw-colored, apex acute.

Leaves

basal 1, cauline 2;

auricles 0.5 mm, apex rounded, cartilaginous;

blade 7–45 cm x 1–2 mm, terete, not scabrous.

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

terminal panicles of 70–120 heads, 6–10 cm, branches ascending;

primary bract erect;

heads 3–5(–8)-flowered, obconic, 2–4 mm diam.

(3–)8–30(–45)-flowered, diffuse, 3–11 cm;

primary bract rarely surpassing inflorescence.

Flowers

tepals dark reddish brown, lanceolate, apex acuminate to subulate tipte;

outer tepals 1.9–2.2 mm;

inner tepals 2–2.3 mm;

stamens 6, anthers 2 times filament length.

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

inserted with beak exserted, straw-colored, 1-locular, narrowly ovoid, 2.3–2.4 mm, tapering to subulate tip, valves separating at dehiscence.

tan, 3-locular, ellipsoid to narrowly so, 2.7–4 × 1.2–1.7 mm.

Seeds

narrowly ovoid, 0.5–0.6 mm, not tailed;

body clear yellow-brown.

tan, ellipsoid or widely so, 0.364–0.45 mm, not tailed.

2n

= ca. 80.

Juncus acutiflorus

Juncus georgianus

Phenology Fruiting fall. Flowering and fruiting spring.
Habitat Wet woods 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 0–10 m (0–0 ft) 300–600 m (1000–2000 ft)
Distribution
from FNA
NF; SPM; Europe; Asia; Africa
[BONAP county map]
from FNA
AL; GA; NC; SC
[BONAP county map]
Source FNA vol. 22. FNA vol. 22.
Parent taxa Juncaceae > Juncus > subg. Septati Juncaceae > Juncus > subg. Poiophylli
Sibling taxa
J. acuminatus, J. acutus, J. alpinoarticulatus, J. anthelatus, J. arcticus, J. articulatus, J. biglumis, J. bolanderi, J. brachycarpus, J. brachycephalus, J. brachyphyllus, J. brevicaudatus, J. bryoides, J. bufonius, J. bulbosus, J. caesariensis, J. canadensis, J. capillaris, J. capitatus, J. castaneus, J. chlorocephalus, J. compressus, J. confusus, J. cooperi, J. coriaceus, J. covillei, J. debilis, J. dichotomus, J. diffusissimus, J. drummondii, J. dubius, J. dudleyi, J. effusus, J. elliottii, J. ensifolius, J. falcatus, J. filiformis, J. filipendulus, J. georgianus, J. gerardii, J. greenei, J. gymnocarpus, J. hallii, J. hemiendytus, J. howellii, J. inflexus, J. interior, J. kelloggii, J. leiospermus, J. lesueurii, J. longistylis, J. luciensis, J. macrandrus, J. macrophyllus, J. marginatus, J. maritimus, J. megacephalus, J. mertensianus, J. militaris, J. nevadensis, J. nodatus, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pervetus, J. phaeocephalus, J. polycephalus, J. regelii, J. repens, J. roemerianus, J. scirpoides, J. secundus, J. squarrosus, J. stygius, J. subcaudatus, J. subtilis, J. supiniformis, J. tenuis, J. texanus, J. textilis, J. tiehmii, J. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides
J. acuminatus, J. acutiflorus, J. acutus, J. alpinoarticulatus, J. anthelatus, J. arcticus, J. articulatus, J. biglumis, J. bolanderi, J. brachycarpus, J. brachycephalus, J. brachyphyllus, J. brevicaudatus, J. bryoides, J. bufonius, J. bulbosus, J. caesariensis, J. canadensis, J. capillaris, J. capitatus, J. castaneus, J. chlorocephalus, J. compressus, J. confusus, J. cooperi, J. coriaceus, J. covillei, J. debilis, J. dichotomus, J. diffusissimus, J. drummondii, J. dubius, J. dudleyi, J. effusus, J. elliottii, J. ensifolius, J. falcatus, J. filiformis, J. filipendulus, J. gerardii, J. greenei, J. gymnocarpus, J. hallii, J. hemiendytus, J. howellii, J. inflexus, J. interior, J. kelloggii, J. leiospermus, J. lesueurii, J. longistylis, J. luciensis, J. macrandrus, J. macrophyllus, J. marginatus, J. maritimus, J. megacephalus, J. mertensianus, J. militaris, J. nevadensis, J. nodatus, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pervetus, J. phaeocephalus, J. polycephalus, J. regelii, J. repens, J. roemerianus, J. scirpoides, J. secundus, J. squarrosus, J. stygius, J. subcaudatus, J. subtilis, J. supiniformis, J. tenuis, J. texanus, J. textilis, J. tiehmii, J. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides
Name authority Ehrhart: in G. F. Hoffmann, Deutschl. Fl. 1: 125. (1791) Coville: Bulletin of the Torrey Botanical Club 22:44. (1895)
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