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 12. Moullava Adans., Fam. Pl. 2: 318. 1763, descr. emended E. Gagnon & G. P. Lewis Figs 20A-C , 21 Wagatea Dalzell (1851). Cinclidocarpus Zoll. & Moritzi (1846). Caesalpinia sect. Cinclidocarpus (Zoll. & Moritzi) Benth. & Hook. (1865). Diagnosis. Moullava is related to Mezoneuron , but differs by its fleshy, oblong-elliptic, indehiscent, sub-torulose, wingless pods, with thickened sutures (vs. laterally compressed, chartaceous, coriaceous or ligneous, indehiscent pods, with a longitudinal wing along the upper suture), and by its subglobular (vs. compressed) seeds. Type . "H.M. 6 t . 6" (= Rheede's Hortus Malabaricus 6, plate 6, 1686) = Moullava spicata . Emended description. Lianas and scrambling shrubs, armed with deflexed prickles on shoots. Stipules not seen. Leaves alternate, bipinnate, ending with a pair of pinnae, 12-40 cm long, glabrous to pubescent-tomentose, with a pair of prickles at the insertion of each pinna; pinnae opposite, in 7-20 pairs; leaflets in 5-40 opposite pairs per pinna, sessile, narrowly oblong to ovate-oblong, apex rounded to emarginate, sometimes mucronate, base asymmetrical to rounded, blades eglandular, glabrous to pubescent, 4-20 x 2-6 mm. Inflorescence an elongated terminal or axillary raceme, the flowers subsessile, pedicels, when present, 10-25 mm long, the racemes sometimes aggregated into panicles, 8-60 cm long, unarmed or with a few prickles at the base. Flowers bisexual, sub-actinormophic or zygomorphic; calyx comprising a hypanthium with 5 sepals, 6-12 x 2-4 mm, the lower sepal strongly cucullate, covering the other 4 sepals in bud, all sepals eglandular and glabrous; petals 5, free, yellow, the median and lateral petals sometimes streaked red, eglandular; stamens 10, free, barely exserted beyond the corolla, densely pubescent on lower half of filaments, 8-15 mm long; ovary glabrous or pubescent. Fruit fleshy, oblong-elliptic, unarmed, indehiscent, sub-torulose, with thickened sutures, the apex apiculate, 35-50 (-80) x 15-30 mm, drying black (immature fruits of Moullava spicata red-tomentose), exocarp and endocarp strongly adnate, glabrous, 1-4-seeded. Seeds sub-globular, 12-20 mm in diameter, olive-brown to black. Geographic distribution. A genus of four species, three in south Asia: India, Nepal, Myanmar (Burma), Thailand, Laos, Cambodia, Sri Lanka, southern China (Yunnan and Hainan), and the Malay Peninsula and Archipelago, and one in Africa: Cameroun, Gabon, the Democratic Republic of Congo, Angola, Zambia (Kabompo Dist.), Uganda and Tanzania (Kigoma Dist.). Habitat. The Asian species are found in seasonally dry tropical semi-evergreen forest margins, secondary thickets, and on mountain slopes, up to 1200 m elevation. The African species occurs mostly in riverine habitats in lowland rainforests. Etymology. Derived from the vernacular name of Moullava spicata , "mulu" (Malayalam: spiny), a spiny climber. References. Brenan (1963 , 1967 ); Hattink (1974) ; Vidal and Hul Thol (1976) ; Nicolson (1980) ; Ansari (1990) ; Sanjappa (1992 : 33); Brummitt et al. (2007 , see both Moullava and Mezoneuron welwitschianum ); Chen et al. (2010a) . Figure 21. Moullava spicata (Dalzell) Nicolson. A flowering branch B single pinna of bipinnate leaf C leaflet undersurface D leaflet undersurface detail E young stem F older stem G part inflorescence H calyx opened out I median petal J upper lateral petal K lower lateral petal L stamen M gynoecium N stigma O fruit P seed. A , G from photo by P. S. Green B - D, H - N from Cult. Foster Bot. Gard. F1901, specimen Hutchinson 2784 E from Critchett 11/79 F from Nana 5620 O , P from Meebold 8605. Drawn by Eleanor Catherine.