Cotula turbinata, L., 1753

Jakoet, A., Mucina, L. & Magee, A. R., 2019, The pseudo-radiate buttons: A taxonomic revision of the Cotula turbinata group (Asteraceae; Anthemideae) and the description of two new species *, South African Journal of Botany 121, pp. 282-293 : 283-284

publication ID

https://doi.org/ 10.1016/j.sajb.2018.11.016

DOI

https://doi.org/10.5281/zenodo.10528517

persistent identifier

https://treatment.plazi.org/id/442087F9-442D-FFD2-FCA5-AEBDFCE9C8C1

treatment provided by

Felipe

scientific name

Cotula turbinata
status

 

4. Key to the species of the Cotula turbinata View in CoL group

1a. Heads radiate, disciform or discoid.………other groups in Cotula . 1b. Heads pseudo-radiate (outer disc florets with one of the lobes greatly enlarged): 2a. Plants perennial: 3a. Pseudo-rays yellow; leaflets subterete; leaves densely clustered below the peduncle; plants not rooting at stem nodes; coastal areas between Mossel Bay and East London ……….……………….……………….

3b. Pseudo-rays white; leaves ± flat; leaves regularly arranged along the stem; plants rooting at stem nodes; upper slopes and summits of Cape Fold Mountains ……………….……………….……..2. C. perennans . 2b. Plants annual:

4a. Pseudo-rays white or rarely cream; disc floret cypselae without a myxogenic band around the fertile portion on the ventral surface: 5a. Cypselae of filiform outer florets smaller than involucral bracts, flat to only slightly concave on ventral surface; pedicels gradually longer towards the outer series; widespread between Darling and Swellendam …………………………………………………………………3. C. turbinata . 5b. Cypselae of filiform outer florets larger than involucral bracts, deeply concave on ventral surface with wings curved outwards; outermost series of pedicels abruptly longer than inner series; limestone depressions on the Agulhas Plain …………………………………………………………………..4. C. calcicola . 4b. Pseudo-rays yellow or orange; disc floret cypselae with a prominent myxogenic band around the fertile portion on the ventral surface: 6a. Pseudo-rays yellow, enlarged lobe of outer disc florets ±2 times length of other three lobes, pseudo-rays in single series; disc face convex ……………………………………………………………...5. C. pruinosa . 6b. Pseudo-rays usually orange (rarely golden yellow), enlarged lobe of outer disc florets ±4 times length of other three lobes, pseudo-rays in 2 series; disc face concave to flat …………..……...……..6. C. duckittiae .

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Asteraceae

Genus

Cotula

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