Adesmia sessilifolia (Fabaceae), a new species from a relictual landscape in southern Brazil Author Iganci, João R. V. Author Miotto, Silvia T. S. text Phytotaxa 2011 2011-07-29 26 21 24 http://biotaxa.org/Phytotaxa/article/view/phytotaxa.26.1.4 journal article 10.11646/phytotaxa.26.1.4 98c87ea8-e73f-4e81-8d08-dbc5fe158982 1179-3163 4894118 Key to species of Adesmia ser. Psoraleoides 1. Slightly lignified plants, subshrubs and shrubs ............................................................................................................ 2 - Herbaceous plants......................................................................................................................................................... 7 2. Pedicels erect, even in fruit. Leaflets 1.6–5.0 × 0.6–2.2 mm , generally conduplicate .................................... A. tristis - Pedicels reflexed after anthesis. Leaflets 6.0–20.0 × 2.1–10.0 mm, generally flat ...................................................... 3 3. Branches and leaves glabrous, only the inflorescences pubescent ............................................................................... 4 - Branches, leaves and inflorescences pubescent ........................................................................................................... 5 4. Plants up to 35 cm tall; leaflets 10–13 × 5–8 mm , pinnately veined....................................................... A. sessilifolia - Plants 70–90 cm tall; leaflets 5.5–15.0 × 2.0– 4.8 mm , single-veined..................................................... A. paranensis 5. Inflorescences lax; flowers 7–9(–10) mm in length ............................................................................... A. rocinhensis - Inflorescences dense; flowers 14.0– 19.5 mm in length................................................................................................ 6 6. Plants with prominent leaf scars and persistent stipules; racemes short, corymbose, aril absent ............... A. reitziana - Plants without leaf scars; racemes long, seeds arillate ......................................................................... A. psoraleoides 7. Racemes with axillary flowers at the base..................................................................................................... A. araujoi - Racemes or panicles without axillary flowers .............................................................................................................. 8 8. Leaflets broadly elliptic, suborbicular or obovate, 3.0–7.0 mm wide .......................................................................... 9 - Leaflets elliptic, oblong, obovate or rarely ovate, 0.7–2.8(–4.0) mm wide................................................................ 10 9. Leaves with 2–4(–5) pairs of leaflets. Pedicels 6.5–7.5 mm long. Hemicraspedium with 2–4(–5) orbicular articles... .......................................................................................................................................................................... A. valsii - Leaves with (3–)5–8(–9) pairs of leaflets. Pedicels 1.5–5.0 mm long. Hemicraspedium with (2–)4–7 subquadrangular articles......................................................................................................................................................... A. sulina 10. Hemicraspedium articles 2.5–3.5 × 1.6–3.3 mm . Seeds with very short aril ................................................. A. ciliata - Hemicraspedium articles 3.5–4.8 × 2.7–3.5 mm . Seeds with well-developed aril........................................ A. arillata