Gesneriaceae

Araujo, Andréa Onofre De & Chautems, Alain, 2015, A new species of Sinningia (Gesneriaceae) and additional floristic data from Serra dos Carajás, Pará, Brazil, Phytotaxa 227 (2), pp. 158-166 : 164

Key to the Gesneriaceae species from Serra dos Carajás

1. Plants with rhizome or tuber; nectary composed of more than 2 glands, or ring-shaped (then flowers longer than petioles), or missing.......................................................................................................................................................................................................2

- Plants without rhizome or tuber; nectary composed of a bilobed or a single gland in dorsal position, if nectary ring-shaped, flowers (with pedicels) shorter than the petioles.............................................................................................................................................6

2. Plant up to 25 mm high, with tuber; androecium reduced to two fertile stamens................................................... Sinningia minima

- Plant greater than 25 mm in height, with rhizome; four fertile stamens............................................................................................3

3. Corolla entirely white or cream with dark spots inside......................................................................................................................4

- Corolla lilac........................................................................................................................................................................................5

4. Corolla entirely white, campanulate.................................................................................................................... Phinaea albolineata

- Corolla cream with dark spots inside, funnel-shaped........................................................................................................ Phinaea sp.

5. Leaf margins 2–3 toothed; corolla tube up to 6 mm in length ................................................................................. Goyazia rupicola

- Leaf margins with more than 5 teeth; corolla tube larger than 7 mm in length .................................................. Mandirola rupestris

6. Plants growing in ant-gardens; leaf blade up to 3 cm long ...................................................................... Codonanthopsis crassifolia

- Plants growing as epiphytes or terrestrial; leaf blade more than 4.5 cm long....................................................................................7

7. Corolla red..........................................................................................................................................................................................8

- Corolla white......................................................................................................................................................................................9

8. Leaf blade up to 14 cm long; corolla lobes light red with red dots and lines mixed with some white patches; sepals with brownish trichomes ................................................................................................................................................ Nautilocalyx cf. kohlerioides

- Leaf blade more than 14.5 cm long; corolla lobes without red dots; sepals with reddish trichomes..... Nautilocalyx cf. fasciculatus

9. Flowers (with pedicels) shorter than the petioles, corolla up to 1 cm long................................................... Besleria cf. flavo-virens

- Flowers (with pedicels) longer than the petioles, corolla more than 2 cm long...............................................................................10

10. Corolla lobes entire..................................................................................................................................................... Nautilocalyx sp.

- Corolla lobes fimbriate.....................................................................................................................................................................12

11. Terrestrial herb creeping on the ground, leaf blade bullate, margin crenate, base rounded or cordate, sepals 0.8–1 × 0.3–0.4 cm .... .................................................................................................................................................................................. Episcia fimbriata

- Terrestrial shrub or liana, leaf blade with flat surface, margin serrate, base acute or attenuate, sepals 2–3 × 0.5–2 cm ..................... .............................................................................................................................................................................. Drymonia serrulata