A new species of succulent plant discovered in limestone areas of Kyushu, Japan: Sedum kawaraense (Crassulaceae) Author Ito, Takuro Tohoku University Botanical Gardens, 12 - 2 Kawauchi, Aoba-ku, Sendai-shi, Miyagi, 980 - 0862 Japan. Author Kanemitsu, Hironobu 0000-0002-4332-2152 IDEA Consultants, Inc., 1 - 5 - 12 Higashihama, Higashi-ku, Fukuoka-shi, Fukuoka 812 - 0055, Japan. hironobu. kanemitsu @ gmail. com; https: // orcid. org / 0000 - 0002 - 4332 - 2152 hironobu.kanemitsu@gmail.com Author Hoson, Taishi Department of Ecological Developmental Adaptability Life Sciences, Graduate School of Life Sciences, Tohoku University, 2 - 1 - 1 Katahira, Aoba-ku, Sendai-shi, Miyagi, Japan. Author Yahara, Tetsukazu Kyushu Open University, 744 Motooka, Nishi-ku, Fukuoka-shi, 819 - 0395 Japan. text Phytotaxa 2023 2023-03-14 587 2 149 160 http://dx.doi.org/10.11646/phytotaxa.587.2.4 journal article 234667 10.11646/phytotaxa.587.2.4 4ecbba73-2c5e-4e12-b4e4-d5ec1d7a51a8 1179-3163 7731904 Diagnostic key of S. kawaraense and related species 1. Carpels 3........................................................................................................................................................................... S. tricarpum – Carpels 5............................................................................................................................................................................................ 2 2. Perennial, a stolon present, rosulate leaves absent during flowering .................................................................................... S. subtile – Annual or biennial, a stolon absent, rosulate leaves present during flowering ..................................................................................3 3. Bulb present at leaf axils ................................................................................................................................................ S. bulbiferum – Bulb absent at leaf axils......................................................................................................................................................................4 4. Flowering stem extends only from rosette center...............................................................................................................................5 – Flowering stem extends from rosette center and leaf axils ................................................................................................................6 5. Cauline leaves obovate to spatulate, 0.7–1.2× 0.3–0.6 cm ..................................................................................... S. erythrospermum – Cauline leaves narrowly obovate to spatulate-oblong, 2.0–3.0× 0.3–0.7 cm ............................................................. S. hangzhouense 6. Flowers 2–6, rosulate leaves broadly obovate................................................................................................................. S. lipingense – Flowers 4–16, rosulate leaves spatulate ........................................................................................................................ S. kawaraense