|
small-head rush
|
Nevada rush, Tiehm's dwarf rush, Tiehm's rush
|
| Herbs, perennial, cespitose, 2–7 dm. |
Herbs, annual, cespitose, 0.1–0.6 dm. |
erect, 1–4 mm diam., smooth. |
to 150, 0.1–0.2 mm diam. |
1–2, straw-colored to pink, apex acute. |
|
basal 1–3, cauline 1–2; auricles 0.6–1.5 mm, apex rounded, scarious; blade terete to compressed, 0.2–12 cm × 0.5–2 mm. |
to 2.5 cm × 0.1–0.3 mm. |
panicles of 5–80 heads, 5–25 cm, branches ascending; primary bract erect; heads 2–6-flowered, ellipsoid to obovoid, 2–5 mm diam. |
headlike clusters, each with 1–4(–7) flowers; bracts subtending inflorescence 2–4(–8), ovate, inconspicuous, 0.6–1.5 mm, membranous, apex acute. |
tepals green to light brown, lanceolate; outer tepals 1.8–2.5 mm, apex obtuse to nearly acute; inner tepals 2–2.8 mm, apex obtuse to nearly acute; stamens 3 or 6, anthers 1/2 filament length. |
3-merous; : tepals 4(–6), green or darker, acute to acuminate, 1.9–2.9 × 0.4–0.6 mm, nearly equal; stamens 2(–3), filaments 0.5–0.8 mm, anthers 0.3–0.4 mm; style 0.2–0.3 mm, stigma 0.2–0.7 mm. |
exserted, chestnut to dark brown, imperfectly 3-locular, obconic, 2.4–3.8 mm, apex acute proximal to beak, valves separating at dehiscence. |
pink-tinged, 2- or 3-locular, ellipsoid to narrowly oblate, 1.9–2.9 × 1.1–1.5 mm, nearly equal or slightly longer than tepals. |
ellipsoid to fusiform, 0.8–1.2 mm, tailed; body covered with whitish translucent veil. |
oblate to ovoid, 0.35–0.55 mm. |
|
= 17. |
= 80. |
|
|
|
|
|
| Fruiting summer–early fall. |
Flowering and fruiting mid spring–early fall. |
| Calcareous marshes, wet meadows, and wetland shores |
Bare, moist granitic sand along streams, seepage areas around outcrops, and depressions in meadows |
| 100–200 m (300–700 ft) |
300–3100 m (1000–10200 ft) |
|
AL; CO; CT; GA; IL; IN; MA; ME; MI; MN; NC; ND; NH; NJ; NY; OH; OK; PA; TN; VA; VT; WI; WV; NB; NS; ON; QC;
|
CA; ID; NV; WA; Mexico |
| FNA vol. 22. |
FNA vol. 22. |
| Juncaceae > Juncus > subg. Septati |
Juncaceae > Juncus > subg. Graminifolii |
J. acuminatus, J. acutiflorus, J. acutus, J. alpinoarticulatus, J. anthelatus, J. arcticus, J. articulatus, J. biglumis, J. bolanderi, J. brachycarpus, 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. 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. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides |
| J. canadensis var. brachycephalus |
|
| (Engelmann) Buchenau: Botanische Jahrbucher fur Systematik, Pflanzengeschichte und Pflanzengeographie 12: 268. (1890) |
Ertter: Memoirs of the New York Botanical Garden 39: 60, figs. 13f–g, 14. (1986) |
| |
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