Key to Species of the Goeppertia with spathes with a recurved apex from the Brazilian Atlantic Forest

1. Leaf blades with length:width ratios of 4:1 or higher.

2. Adaxial side of leaf blades villous; spathes externally villous................................................................................... G. brevipes

2’. Adaxial side of leaf blades entirely glabrous or tomentose in the midrib; spathes externally strigose or glabrous.

3. Florescence composed of 4 cymes; corolla length 1–1.1 cm ......................................................................... G. ackermannii

3’. Florescence composed of 2–3 cymes; corolla length 2.4–2.9 cm ...................................................................... G. dorothyae

1’. Leaf blades with length:width ratios of 3:1 or lower.

4. Callous staminode with petaloid apex.

5. Leaf blades ovate, obtuse to rounded at base.

6. Florescence composed of 8 cymes; corolla length 2.2–2.4 cm ............................................................. G. annae

6’. Florescence composed of 2–5 cymes; corolla length 3.8–4.5 cm .................................................... G. grazielae

5’. Leaf blades elliptic, acute to truncate at base.

7. Corolla tube tomentose externally .................................................................................. G. sphaerocephala

7’. Corolla tube glabrous externally.

8. Plants taller than 70 cm; mature leaf blades longer than 50 cm; sepals 2–2.2 cm long ........ G. reginae

8’. Plants 20–60 cm tall; mature leaf blades 12–40 cm long; sepals up to 1.4 cm long.

9. Abaxial of leaf blade papillose; corolla tube more than 2 cm long............................ G. mediopicta

9’. Abaxial face of leaf blade not papillose, tomentose, or glabrous; corolla tube less than 2 cm long.. .......................................................................................................................................... G. aemula

4’. Callous staminode without petaloid apex.

10. Spathes tomentose to villous externally .................................................................................................. G. truncata

10’. Spathes glabrous or puberulous externally, distal or basal spathes occasionally pubescent.

11. Plants taller than 1 m; corolla tube 2.1–2.6 cm long................................................................... G. burle-marxii

11’. Plants shorter than 1 m; corolla tube 1.5–2 cm long.

12. Abaxial face of leaf blade glabrous, with a pubescent midrib; spathes green; 1 bracteole per cyme; corolla tube glabrous externally; flowers light-yellow.......................................................................... G. cylindrica

12’. Abaxial face of leaf blade entirely pubescent; spathes white; 2 bracteoles per cyme; corolla tube pillous externally; flowers whitish................................................................................................. G. albobracteata