Croton longicarpus Pereira, Caruzo & Riina (2017: 830)

Pereira, Amanda Da Paixão Noronha, Riina, Ricarda & Caruzo, Maria Beatriz Rossi, 2022, Croton (Euphorbiaceae) of the Brazilian state of Paraná: an annotated checklist, species distribution, and identification key, Phytotaxa 570 (3), pp. 231-274 : 251-252

publication ID

https://doi.org/ 10.11646/phytotaxa.570.3.1

DOI

https://doi.org/10.5281/zenodo.7260351

persistent identifier

https://treatment.plazi.org/id/039887C6-901E-0462-FF44-FE682EE783DB

treatment provided by

Plazi

scientific name

Croton longicarpus Pereira, Caruzo & Riina (2017: 830)
status

 

21. Croton longicarpus Pereira, Caruzo & Riina (2017: 830) View in CoL .

Type: — BRAZIL. Paraná: Rio Branco do Sul , rodovia PR-092, sentido Cerro Azul , próximo ao km 40, orla de Floresta Ombrófila Mista, 25°08’00.7”S, 49°20’54.8”W, 940 m, 22 November 2016, A.P N. Pereira, M.B R. Caruzo & R. Riina 46 (holotype SP 489505 !; isotypes MBM!, NY!, RB!) ( Fig. 13 View FIGURE 13 , A–E) GoogleMaps .

This shrub can be easily recognized because of the indument and shape of the pistillate sepals (lepidote, narrowly spatulate) and its narrowly ellipsoid ovaries/capsules. In herbaria, part of the Croton longicarpus collections have been previously misidentified as C. splendidus . These two species can be distinguished by leaf shape (narrowly to broadly elliptic in C. splendidus vs. narrowly lanceolate to lanceolate in C. longicarpus ), and lepidote trichomes in styles (absent in C. splendidus vs. present in C. longicarpus ) ( Pereira et al. 2017b). Croton longicarpus also resembles C. uruguayensis due to their long and lax inflorescences, and narrow leaves. Despite this, C. longicarpus differs by its adaxial leaf surface covered by stellate trichomes, bisexual inflorescences, narrowly spatulate pistillate sepals, narrowly ellipsoid capsules, and styles covered by lepidote trichomes, whereas in C. uruguayensis the adaxial leaf surface is glabrous, the inflorescences are unisexual, the pistillate sepals are oblong, the capsules are globose, and the styles are glabrous. Croton longicarpus belongs to section Lamprocroton subsect. Lamprocroton ( van Ee & Berry 2011) .

Distribution and habitat: —It is restricted to southern Brazil (PR, RS), growing in open vegetation and edges of Araucaria forest , between 860 and 1000 m elevation ( Pereira et al. 2017b) ( Fig. 12 View FIGURE 12 ).

Phenology: —Flowering from February to March and September to December, and fruiting November to March.

Representative specimens:— PARANÁ: Coronel Domingos Soares, São João, 26°11’39”S, 52°02’24”W, 1045, 22 September 2014, J. T. Motta & J. M. Silva 4435 ( MBM). Mallet, Rio Bonito, 20 April 2005, O. S. Ribas, R. Wasum & L.Seur 6844 B ( MBM). Rio Branco do Sul, Caverna de Caximba, 14 December 1996, G. Tiepolo & A. C. Svolenski 643 ( EFC, MBM); Rodovia PR-092, sentido Cerro Azul, próximo ao km 40, 25°08’00.7’’S, 49°20’54.8’’W, 940 m, 22 November 2016, A. P. N. Pereira, M. B. R. Caruzo & R. Riina 46 ( SP).

J

University of the Witwatersrand

T

Tavera, Department of Geology and Geophysics

M

Botanische Staatssammlung München

MBM

San Jose State University, Museum of Birds and Mammals

O

Botanical Museum - University of Oslo

S

Department of Botany, Swedish Museum of Natural History

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

G

Conservatoire et Jardin botaniques de la Ville de Genève

A

Harvard University - Arnold Arboretum

C

University of Copenhagen

EFC

Escola de Florestas

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

N

Nanjing University

SP

Instituto de Botânica

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