Sedum keniense (Crassulaceae), a new species from Mt. Kenya, East Africa Author Zhou, Ya-Dong Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, Hubei, China. & Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, Hubei, China. & University of Chinese Academy of Sciences, Beijing 100049, China. Author Hu, Guang-Wan Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, Hubei, China. & Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, Hubei, China. Author Yan, Xue Author Mwachala, Geoffrey Author Gituru, Robert Wahiti Author Wang, Qing-Feng Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, Hubei, China. & Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, Hubei, China. text Phytotaxa 2016 2016-05-18 261 2 177 184 http://dx.doi.org/10.11646/phytotaxa.261.2.7 journal article 10.11646/phytotaxa.261.2.7 1179-3163 13671763 Sedum keniense Y.D.Zhou, G.W.Hu & Q.F.Wang , sp. nov. ( Fig. 2B & D ; Fig. 3A–E ) Perennial succulent herb, woody at base; stems and leaves farinose; inflorescences of terminal corymbose cymes, many-flowered; flowers yellow. Nearly always in wet places on cliff faces, rarely on trees. Type: — Kenya . Meru District , Mt. Kenya , eastern slope, Chogoria Route Waterfall , 00°09’02.17’’S , 37°24’32.80’’E , elevation 3184 m , 25 Jan. 2015 , SAJIT 002822 ( holotype HIB !; isotypes EA !, PE !). The same locality, 12 Aug. 2016 , SAJIT 003998 ( paratypes HIB !; EA !; PE !) . FIGURE 3. Sedum keniense . A.Habitus; B. stem and leaves; C. inflorescences; D. bracts, sepals and flower buds; E. flower. Voucher: SAJIT 002822 (HIB). Photographs: Y.D. Zhou. Perennial succulent woody herb ( Fig. 3A ); stems much-branched, up to 50 cm long, covered with white powder ( Fig. 3B ). Leaves sessile, alternate, narrowly oblong, 10–40 × 3–8 mm , apex obtuse to acute, base shortly auriculate-peltate, covered with white powder ( Fig. 3B ). Inflorescences of terminal corymbose cymes, many-flowered, up to 10 cm long ( Fig. 3C ); bracts similar to leaves, but smaller ( Fig. 3D ); pedicels 2–10 mm long. Flowers 5-merous ( Fig. 3E ). Calyx-lobes oblong-lanceolate, 5–7 × 1–2 mm , base united for 1 mm , spurs absent or slightly spurred ( Fig. 3D ). Petals bright yellow, lanceolate, 7–11 × 2–3.5 mm , base united, apex obtuse, slightly reflexed in open flowers ( Fig. 3E ). Stamens 10, with antisepalous filaments 3–5.5 mm long; antipetalous filaments inserted 1.3–2 mm above the base of the petals and free for 2–4.5 mm ; anthers oval, 0.8–1 mm long ( Fig. 3E ). Nectary scales ca. 0.6–0.8 × 0.6–0.9 mm , shallowlly 2–lobed at the tip. Carpels 5, shortly united at the base, 2–4 × 0.8–1.5 mm ; styles ca. 1 mm long ( Fig. 3E ). Seeds numerous, brown to black, oblong to narrowly oblong, 0.5–0.7 mm long ( Fig. 2B & D ). Etymology: —The specific epithet “ keniense ” is from the name of the country, “ Kenya ”. It also could be interpreted as derived from the name of Mt. Kenya . Distribution and ecology: — Sedum keniense is only known from Chogoria Waterfall, Mt. Kenya , at an elevation of ca. 3184 m ( Fig. 4 ). The species grows luxuriantly in wet places on the cliff wall close to the waterfall ( Fig. 4C ) and occasionally on trees ( Fig. 4D ).