Croton lanatus Lamarck (1786:211)

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 : 249-251

publication ID

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

DOI

https://doi.org/10.5281/zenodo.7268550

persistent identifier

https://treatment.plazi.org/id/039887C6-9018-0463-FF44-F88F2E4E83FF

treatment provided by

Plazi

scientific name

Croton lanatus Lamarck (1786:211)
status

 

20. Croton lanatus Lamarck (1786:211) View in CoL .

Type: — URUGUAY. Montevideo, s.loc., s.d., P. Commerson s.n. (holotype P 00623501 !; isotypes A 00303800!, F I011649!, MPU 014842!). ( Fig. 11 View FIGURE 11 , K–M)

Croton lanatus is a shrub easly distiguised by its highly dense indument of stellate trichomes, sessile basilaminar glands, densely pubescent styles, and a pair of sessile glands at the base of bracts. Some specimens have been misidentified as C. reitzii , however, they can be differentiated by leaf shape and inflorescence (ovate to ovate-lanceolate and lax in C. lanatus vs. lanceolate and congested in C. reitzii ). Croton lanatus is also morphologically similar to C. thermarum , but they can be distinguished by styles and nectary glands at the bracts (bifid and present in C. lanatus vs. tetrafid and absent in C. thermarum ) (see Table 2 View TABLE 2 ). Croton lanatus belongs to section Adenophylli subsect. Meridionalis ( van Ee & Berry 2021) .

Distribution and habitat:— It occurs in Argentina, Uruguay, and Brazil (PR, RS, SC) ( Smith et al. 1988, Caruzo & Cordeiro 2007). The species has few records for the state of Paraná, being most commonly found in Rio Grande do Sul. It grows in open vegetation (‘campo limpo’), preferably in rocky and sandy soils, between 800 and 1280 m elevation. ( Fig. 10 View FIGURE 10 ).

Phenology:— Flowering and fruiting from June, September and November.

Representative specimens:— PARANÁ: Cantagalo, BR-277, 11 June 1989, A. C . Cervi et al. 2718 ( MBM, UPCB). Guarapuava , 26 September 1968, G . Hatschbach & O . Guimarães 19860 ( MBM). Idem, Rio Cavernoso , 06 November 1963, E . Pereira & G . Hatschbach 7699 ( MBM) .

A

Harvard University - Arnold Arboretum

C

University of Copenhagen

MBM

San Jose State University, Museum of Birds and Mammals

UPCB

Universidade Federal do Paraná

G

Conservatoire et Jardin botaniques de la Ville de Genève

O

Botanical Museum - University of Oslo

E

Royal Botanic Garden Edinburgh

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