The Caesalpiniaceae are mostly tropical and subtropical trees and shrubs comprising about 150 genera and 2,200 species. The leaves are stipulate, alternate, and mostly pinnately compound but may be bipinnate or simple. Like the other legume families the petiole base is commonly enlarged into a pulvinus. The flowers are in racemes, spikes or cymes, are zygomorphic, and are mostly weakly to strongly perigynous. The perianth commonly consists of a calyx and corolla of 5 segments each; the petals are distinct, overlapping (i.e., imbricate) in bud, with the posterior one (flag or banner) innermost in position. The androecium usually consists of 1-10 distinct or variously united stamens, some of which are commonly reduced to nonfunctional staminodes. The pistil is simple, consisting of one style and stigma, and a superior ovary with one locule containing 2-many marginal ovules. The fruit is usually a legume. -- Gerald Carr
There are approximately 34 species, subspecies, varieties, forms, and cultivars in this genus: L. bipunctata · L. brassii · L. buettneriana · L. cassioides · L. deserticola · L. digitata · L. diversifolia · L. diversifolia var. brevifolia · L. diversifolia var. diversifolia · L. diversifolia var. lanceolata · L. diversifolia var. longifolia · L. eremaea · L. lanceolata · L. lanceolata brevifolia · L. lanceolata lanceolata · L. lanceolata var. brevifolia · L. lanceolata var. lanceolata · L. nitida · L. nitida var. nitida · L. nitida var. pinnata · L. obtrullata · L. punctata · L. punctata var. lanceolata · L. punctata var. punctata · L. rupestris · L. saxicola · L. stellata · L. tephrosiaefolia · L. tephrosiifolia · L. teretifolia · L. teretifolia grandistipulata · L. teretifolia subsp. grandistipulata · L. teretifolia subsp. teretifolia · L. teretifolia teretifolia
There are approximately 62 species, subspecies, varieties, forms, and cultivars in this genus: H. adentotricha · H. aurea · H. candolliana · H. chrysophylla · H. copalifera · H. coubaril · H. coubarilxparvifolia · H. courbarii · H. courbarii var. altissima · H. courbarii var. longifolia · H. courbarii var. stilbocarpa · H. courbarii var. villosa · H. courbaril (Abati) · H. courbaril var. altissima · H. courbaril var. courbaril · H. courbaril var. longifolia · H. courbaril var. stilbocarpa · H. courbaril var. subsessilis · H. courbaril var. villosa · H. curvanis · H. dakotana · H. eriogyne · H. fayettensis · H. gaertneriana · H. hayneana · H. hornemanniana · H. intermedia · H. intermedia var. adenotricha · H. intermedia var. intermedia · H. lamarckiana · H. maranhensis · H. martiana · H. microcarpa · H. microphylla · H. mirabilis · H. oblongifolia (Burundanga) · H. oblongifolia var. davisii · H. oblongifolia var. latifolia · H. oblongifolia var. oblongifolia · H. oblongifolia var. palustris · H. obtusifolia · H. parviflora · H. parvifolia (Jutahysinho) · H. pororoca · H. primigenia · H. pubescens · H. reticulata · H. rubriflora · H. rubriflora var. glabra · H. rubriflora var. rubriflora · H. sagittipetala · H. sp. · H. stigonocarpa · H. stigonocarpa var. brevipetiolata · H. stigonocarpa var. olfersiana · H. stigonocarpa var. pubescens · H. stigonocarpa var. stigonocarpa · H. torrei · H. travassii · H. travassosii · H. velutina · H. verrucosa (Copalier)
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