A new generic system for the pantropical Caesalpinia group (Leguminosae) Author Gagnon, Edeline https://orcid.org/0000-0003-3212-9688 Institut de recherche en biologie vegetale and Departement de sciences biologiques, Universite de Montreal, H 1 X 2 B 2, Montreal, Quebec, Canada edeline.gagnon@gmail.com Author Bruneau, Anne Institut de recherche en biologie vegetale and Departement de sciences biologiques, Universite de Montreal, H 1 X 2 B 2, Montreal, Quebec, Canada Author Hughes, Colin E. Department of Systematic and Evolutionary Botany, University of Zuerich, 8008, Zuerich, Switzerland Author de Queiroz, Luciano Paganucci Universidade Estadual de Feira de Santana, BR 116, Km 03, Campus Universitario, Feira de Santana 44031 - 460, Bahia, Brasil Author Lewis, Gwilym P. Comparative Plant and Fungal Biology Department, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 AB, United Kingdom text PhytoKeys 2016 2016-10-12 71 1 160 http://dx.doi.org/10.3897/phytokeys.71.9203 journal article http://dx.doi.org/10.3897/phytokeys.71.9203 1314-2003-71-1 FFA8FF9AFFEAFFDABA68757DFF9EFF8B 160340 17. Stuhlmannia Taub., Engler, Pflanzenw. Ost.-Afr. C: 201. 1895 Figs 27F-G , 28 Type . Stuhlmannia moavi Taub. Description. Unarmed trees, to 25 m tall; bark brown, fissured and fibrous; young shoots eglandular or with small red glands. Stipules not seen. Leaves alternate, pinnate or bipinnate and then ending in a pair of pinnae, (1.5-) 5-11 (- 20 cm) long, pinnae in (1-) 2-10 pairs per leaf, with reddish glands; leaflets in 3-12 pairs per pinna, opposite to sub-opposite, elliptic, 7-75 (- 120) x 3-30 (- 60) mm, obtuse at the base and apex, glabrous, eglandular or with red glands on the lower surface. Inflorescence a 2-11 cm long, terminal or axillary raceme; pedicels 3-13 mm long. Flowers bisexual, sub-actinomorphic; calyx comprising a hypanthium and 5 sepals, these 5-6.5 mm long, valvate in bud, caducous; petals 5, free, yellow, the median petal with red markings, obovate, 9-12 x 3-6 mm, apex rounded, median petal slightly smaller than the others; stamens 10, free, 5.5-8 mm long, filaments pubescent; ovary stipitate, with red sessile glands, glabrous to pubescent. Fruit a flattened, oblong, woody, elliptic pod with an acuminate apex, 4.5-6 x 1.5-2 cm, dehiscing along both sutures, valves twisting, glabrous to thinly puberulous. Seeds flattened, sub-circular to ovate, c. 10-13 x 8-9 mm, brown. Geographic distribution. A monospecific genus in E Africa (Kenya and Tanzania) and N Madagascar. Habitat. Seasonally dry tropical forest, woodland on limestone and in riverine forest. Etymology . Named by Taubert for the German naturalist Franz Ludwig Stuhlmann (1863-1928). References. Brenan (1967 : 45-47); Capuron (1967 , under Caesalpinia insolita ); Lewis (1996) ; Du Puy and Rabevohitra (2002 : 48, 50, under Caesalpinia insolita ); Lemmens (2010) . Figure 28. Stuhlmannia moavi Taub. A inflorescence and pinnate leaf B flower bract C flower D sepal E median petal F upper lateral petal G lower lateral petal H flower with sepals and petals removed from one side to show arrangement of stamens I stamen J lower portion of stamen filament, seen from inside the flower K lower portion of stamen filament seen from outside the flower L hypathium after fall of sepals, petals and stamens M gynoecium, N stigma and apical portion of style O detail of outer surface of ovary showing sessile glands P fruit Q seed R transverse section of seed. A from Tanner 3167 B, P-R from Tanner 3724 C-O from Tanner 2467. Drawn by E. M. Stones, originally published in Hooker's Icones Plantarum, Tab. 3626 (1967).