Calea sickii

Bueno, Vinícius R., Bentes, Marina Soares, Ramos, Renato, Zavatin, Danilo A. & Prata-Silveira, Ananda, 2025, Three new species of Calea (Asteraceae, Neurolaeneae) from the sky islands of the Espinhaço Range, Phytotaxa 689 (2), pp. 185-203 : 197

Key to the species of Calea sickii group

1. Capitula radiate, florets 35–50 per capitulum ....................................................................................................................................2

- Capitula discoid, florets 7–30 per capitulum......................................................................................................................................5

2. Abaxial surface glandular-punctate ....................................................................................................................................................3

- Abaxial surface eglandular .................................................................................................................................................................4

3. Abaxial surface densely pilose to pilose, often sparsely hirsute, adaxial surface eglandular; paleae 13–13.9 mm long; ray floret corolla 15.9–18.4 mm long............................................................................................................................................... C. roqueana

- Abaxial surface strigose to strigillose, adaxial surface densely glandular-foveate; paleae 8.4–11.2 mm long; ray floret corolla 14–15.1 mm long................................................................................................................................................................ C. strigosa

4. Base leaf rounded, margin repand; first two series of phyllaries hirsute to pilose; ray floret limb ca. 10.5 mm long, disc floret corolla glabrous .................................................................................................................................................................. C. repanda

- Base leaf attenuate, margin pauciserrate; first two series of phyllaries glabrous; ray floret limb ca. 12.3–12.5 mm long, disc floret corolla glandular-punctate ........................................................................................................................................... C. riopardensis

5. Involucre 5-seriate..............................................................................................................................................................................6

- Involucre 6–7-seriate ..........................................................................................................................................................................7

6. Abaxial surface leaf glabrous or hispidulous; involucre cylindrical, 3.4–6.1 mm wide; disc florets 7–9 per capitulum .................... ................................................................................................................................................................................. C. diamantinensis

- Leaf abaxial surface densely tomentose or densely lanate; involucre campanulate, 10–14 mm wide; disc florets 20–30 per capitulum .......................................................................................................................................................................... C. grazielae

7. Leaf venation reticulodromous or acrodromous; capitulescence cymose umbelliform................................................. C. intermedia

- Leaf venation eucamptodromous; capitulescence cymose dichasiform, receptacle holopaleaceou ..................................................8

8. Leaf margin entire, adaxial surface leaf eglandular; first series of phyllaries foliaceous; corolla disc 5–5.8 mm long, pappus free.. .............................................................................................................................................................................................. C. irwinii

- Leaf margin serrate, adaxial surface leaf glandular-punctate; first series of phyllaries scarious; corolla disc 7–7.5 mm long, pappus connate basally ........................................................................................................................................................................ C. sickii