Juncus kuohii (Juncaceae), a new species from Taiwan Author Jung, Ming-Jer Department of Life Science, National Taiwan Normal University, 88 Ting-Chow Rd, Sec 4, Taipei, Taiwan. text Phytotaxa 2013 2013-02-21 81 2 49 54 http://dx.doi.org/10.11646/phytotaxa.81.2.2 journal article 10.11646/phytotaxa.81.2.2 1179-3163 5071569 Key to the Juncus species in Taiwan (*alien and naturalized species) 1. Leaf blades absent or extremely reduced; leaves all basal .......................................................................................... 2 - Leaf blades present and obvious; leaves basal and/or cauline...................................................................................... 3 2. Culms thicker than 2 mm ; cymes with 100–150 florets .............................. J. decipiens (Buchenau) Nakai (1928: 35) - Culms narrower than 1 mm , cymes with 10–30 florets............................................ J. tobdeniorum Noltie (1998: 42) 3. Basal and cauline leaf blades laterally compressed .................................... J. leschenaultii Gay ex Laharpe (1825: 49) - Basal and cauline leaf blades flat, terete or filiform .................................................................................................... 4 4. Basal and/or cauline leaf blades conspicuously flat .................................................................................................... 5 - Basal and/or cauline leaf blades terete or filiform........................................................................................................ 7 5. Inflorescence cymose................................................................................................................................. * J. bufonius - Inflorescence racemose................................................................................................................................................ 6 6. Outer tepals ovate, shorter than 5 mm , outer and inner tepals similar, apex acuminate; capsule globular .................... .................................................................................................................................. * J. marginatus Rostk. (1801: 38) - Outer tepals lanceolate to narrowly ovate, longer than 5 mm , outer tepals with apex mucronate, inner with apex obtuse; capsule ellipsoid ................................................................................................................................... J. kuohii 7. Leaf blades cylindrical, septate, not grooved on adaxial surface... J. wallichianus J. Gay ex Laharpe (1827: 139) - Leaf blades terete or filiform, not septate, with a single groove on adaxial surface .................................................... 8 8. Culms shorter than 10 cm ; tepals longer than 5 mm ........................................ J. maximowiczii Buchenau (1890: 394) - Culms taller than 15 cm ; tepals shorter than 4 mm ..................................................................................................... 9 9. Leaf blades canaliculate to nearly terete near the apex; capsule exceeding tepals; margins of leaf sheaths hyaline ..... ................................................................................................................................ * J. imbricatus Laharpe (1825: 61) - Leaf blades flat; capsule shorter than tepals; margins of leaf sheaths herbaceous ............. J. tenuis Willd. (1799: 214)