Croton pycnocephalus Baillon (1864: 356)
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publication ID |
https://doi.org/ 10.11646/phytotaxa.570.3.1 |
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DOI |
https://doi.org/10.5281/zenodo.7260355 |
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persistent identifier |
https://treatment.plazi.org/id/039887C6-9013-046E-FF44-FCC02F4887CB |
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treatment provided by |
Plazi |
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scientific name |
Croton pycnocephalus Baillon (1864: 356) |
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27. Croton pycnocephalus Baillon (1864: 356) View in CoL .
Type: — BRAZIL. Rio Grande do Sul: 1864, C. Gaudichaud-Beaupré 1668 (holotype P 06773116 !; isotype A 00257986!). ( Fig. 15 View FIGURE 15 , C–D)
This shrub can be distinguished by the indument of stipitate stellate trichomes distributed throughout the plant, small leaves (up to 1.5 cm long), and staminate petals that are twice the size of the sepals. Due to its small leaves and twice bifid styles, C. pycnocephalus is commonly confused with C. serpyllifolius and C. chamaepitis , however, several vegetative characteristics distinguish it from both species ( Table 1 View TABLE 1 ). The species belongs to section Lamprocroton subsect. Argentini ( van Ee & Berry 2011) .
Distribution and habitat:— It occurs in southern Brazil (PR, RS) ( Caruzo et al. 2020), where it grows in sandy or rocky soils of ‘cerrado’, between 800 and 995 m elevation. ( Fig. 14 View FIGURE 14 ).
Phenology:— Flowering and fruiting from October to February, and April to June.
Representative specimens:— PARANÁ: Balsa Nova, São Luiz do Purunã , 05 October 2001, J. M . Silva & O. S . Ribas 3473 ( MBM); idem, 21 April 2010, R . Ristow, L. J. B . Schip & W. T . Ferreira 609 ( IRAI, MBM). Jaguariaíva , Estrada do Sertão, entrada grande, 04 December 1964, G . Hatschbach 11967 ( K, MBM, UPCB); Vale do Codó , 12 October 2006, J. M . Silva, E . Barbosa & E. M . Cunha 5098 ( MBM, MG). Palmeira , Fazenda Padre Inácio, 30 May 1971, G . Hatschbach 26703 ( MBM) .
| J |
University of the Witwatersrand |
| M |
Botanische Staatssammlung München |
| O |
Botanical Museum - University of Oslo |
| S |
Department of Botany, Swedish Museum of Natural History |
| MBM |
San Jose State University, Museum of Birds and Mammals |
| R |
Departamento de Geologia, Universidad de Chile |
| L |
Nationaal Herbarium Nederland, Leiden University branch |
| B |
Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet |
| W |
Naturhistorisches Museum Wien |
| T |
Tavera, Department of Geology and Geophysics |
| IRAI |
Parque da Ciência Newton Freire Maia |
| G |
Conservatoire et Jardin botaniques de la Ville de Genève |
| K |
Royal Botanic Gardens |
| UPCB |
Universidade Federal do Paraná |
| E |
Royal Botanic Garden Edinburgh |
| MG |
Museum of Zoology |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.