Erythrophleum species

Barrett, Russell L. & Barrett, Matthew D., 2023, Taxonomic revision of Australian Erythrophleum (Fabaceae: Caesalpinioideae) including description of two new species, Australian Systematic Botany 36 (5), pp. 401-426 : 418-420

Key to Australian Erythrophleum species

1. Branchlets commonly with fissured, corky bark; petiolules, leaf bases and inflorescence axis pubescent, at least when young; pinnae regularly in 2 or 3 pairs (i.e. both mixed on branchlets); leaflets 5–11 per pinnae, distinctly asymmetric; calyx 1.9–2.5 mm long; stipe of pod 8–10 mm long; flowers sessile............... E. pubescens Branchlets smooth, rarely with corky bark, and then poorly developed; petiolules, leaf bases and inflorescence axis usually glabrous, sometimes glaucous; pinnae mostly in 2 pairs; leaflets 2–6(–7) per pinnae, usually ±symmetric or only slightly asymmetric; calyx 2.3–5.0 mm long; stipe of pod 11–33 mm long; flowers pedicellate (pedicels <0.5 mm long).....................................2

2. Leaflets usually ±symmetric; floral bracts 1.5–2.5 mm long, margins fimbriate; pedicels 3.0– 5.5 mm long; petals 4.2–6.4 mm long; anthers 1.0– 1.3 mm long.......................................... E. arenarium Leaflets usually slightly asymmetric; floral bracts 0.7–0.9 mm long, margins pubescent; pedicels 0.5–1.2 mm long; petals 2.8–3.8 mm long; anthers 0.75–0.95 mm long....................... E. chlorostachys