Chiococca

Jardim, Jomar G., Taylor, Charlotte M., Barbosa, Maria Regina & Pessoa, Maria Do Céo R., 2015, Taxonomic notes on Chiococca and Salzmannia (Rubiaceae, Chiococceae) in northeastern Brazil, with a new combination and a new species, Phytotaxa 202 (1), pp. 15-25 : 18

Key to Species of Chiococca in the Northeast Region of Brazil

1. Stipules not aristate; pedicels 5–12 mm long, with at least some of them more than 5 mm long; shrubs; plants of Fernando de Noronha ................................................................................................................................................................ Chiococca insularis

- Stipules aristate with arista 0.5–2 mm long; pedicels 2–5 mm long; vines and shrubs; plants from the Caribbean basin and tropical South America....................................................................................................................................................................................2

2. Leaf blades drying papyraceous to chartaceous; fruits generally with 2 developed pyrenes..................................... Chiococca alba

-. Leaf blades drying subcoriaceous to coriaceous; fruits generally with 1 developed pyrene.............................................................3

3. Corolla funnelform, 2.7–4.5 mm wide at mouth; anthers 3–3.5 mm long; stigma fusiform, entire ........................ Chiococca nitida

-. Corolla tubular, 0.7–1.1 mm wide at mouth; anthers 1.4–1.7 mm long; stigma bifid with linear lobes........... Chiococca plowmanii