Pavonia humifusa A. Saint-Hilaire ( Saint-Hilaire 1827: 235 )

Tavares, Aline Belém & Alves, Marccus, 2024, Synopsis of Pavonia Cav. (Malvaceae) in the state of Pernambuco, Brazil, Phytotaxa 645 (3), pp. 232-247 : 239-240

7. Pavonia humifusa A. Saint-Hilaire ( Saint-Hilaire 1827: 235) ( Figures 4, 5n , 6m –n).

Holotype:— BRAZIL. Rio de Janeiro: Fazenda de Moribeca , A. St.-Hilaire s.n. [257] ( P barcode P02285732 ! [digital image]; isotypes P barcode P02285733 ! [digital image], P02285734 ! [digital image] and MPU barcode MPU016471 ! [digital image]), F barcode F0063011F ! [digital image])

Taxonomic notes: — Pavonia humifusa is characterized by velutinous indument (in the branches, leaves, and epicalyx), asymmetric lobed leaves (2.3‒5.4 × 3.7‒8.3 cm) and epicalyx with 16‒18 filiform bracteoles. Pavonia humifusa shares the morphological similarities with P. cancellata and P. repens the morphology of the calyx and epicalyx and the prostrate habit. Pavonia cancellata and P. repens can be distinguished from P. humifusa by the indument (pilose to pubescent in the first and velutinous in P. humifusa ) and the morphology of leaves (ovate to deltoid in P. cancellata , flabelliform in P. repens and asymmetric in P. humifusa ).

Distribution, habitat, and IUCN threat status: —This species occurs in Bolivia and Brazil. In Brazil is recorded in the regions of Northeast (Alagoas, Bahia, Pernambuco, and Sergipe) and Southeast (Espírito Santo, Goiás, Distrito Federal, Minas Gerais, and Rio de Janeiro) ( Fryxell, 1999; Flora e Funga do Brasil, 2022). In Pernambuco, it is registered in five municipalities. Occurs in Caatinga Zone in the subzones of Agreste, Sertão Central and in Sertão dos Chapadões Areníticos. It is recorded in the Parque Nacional Vale do Catimbau. P. humifusa has an EOO of 2,473,296.164 km 2 and an AOO of 292.000 Km². This species is here considered Least Concern (LC) because it occurs in anthropized areas and is not endemic to a geographic domain.

Phenology: —Collected with flowers in March, April, May, August, September, October, November, and December and with fruits in August, October, and September.

Representative specimens: — BRAZIL. Pernambuco: Buíque, Fazenda Laranjeiras, 20 May 1995, L.S. Figueiredo 62 ( PEUFR). Buíque , Parque Nacional do Catimbau , 8º34’90”S, 37º14’88”W, 31 October 2005, R.A. Pick 101 ( UFP; BHCB). Belém de São Francisco , Ilha do Meio , 17 July 1967, E.C. Tenório 304 ( IPA; PEUFR). Petrolina , 40 km of Remanso , 22 February 1972, P.A. Fryxell 1944 ( NY [digital image]). Petrolina , Ilha do Massangano , 9º27’31”S, 40º34’26”W, 9 December 2011, K.A. Barroso 33 ( HVASF). Petrolândia, Apolônio Sales, 8º58’05”S, 38º14’19”W, 20 March 2014, M. Pommeranz 56 ( IPA). Santa Maria da Boa Vista , Fazenda Catalunha, 28 April 1996, L.H. Piedade 1 ( UEC) .

Figures

FIGURE 4. Distribution map of Pavonia in the Pernambuco state, Brazil. (●) P. humifusa; (♦) P. malacophylla.