Sida rhombifolia

Raab-Straube, Eckhard von & Raus, Thomas, 2023, Euro + Med-Checklist Notulae, 16, Willdenowia 53 (1), pp. 57-77 : 64-65

publication ID

https://doi.org/10.3372/wi.53.53104

DOI

https://doi.org/10.5281/zenodo.16364976

persistent identifier

https://treatment.plazi.org/id/4C53D769-FF09-FFE3-FC9B-F968FABB6751

treatment provided by

Felipe

scientific name

Sida rhombifolia
status

 

Sida rhombifolia View in CoL L. – Fig. 6.

A Gg: Georgia: Guria region, Ureki–Magnetiti, nameless small street connecting Taqaishvili Street   GoogleMaps and main lateral street, 41.9957556°N, 41.7632444°E, 5 m, eleven small shrubs, 26 Aug 2022, Novák ( BRNU photo [ Fig. 6 View Fig ] + herbarium specimen revised by G. Tavilla); ibid., Imereti region, Vartsikhe, Ajameti Managed Reserve   GoogleMaps , 3.2 km ESE of Vartsikhe monastery, 42.1472467°N, 42.7536211°E, 115 m, 28 Aug 2022, roadside in forest c. 20 small shrubs, Novák, Pustková, Sedláček, Štětková, Szokala & Večeřa (obs.).

,

Sida rhombifolia is a perennial weedy species probably spreading in the Mediterranean region, actually known from Italy and Spain ( Cambria & al. 2022). It is distributed in tropical, subtropical and warm-temperate parts of the world, but its native range remains unknown, probably located in the palaeotropics ( Verdcourt 2004). It prefers open, especially ruderal habitats (roadsides, abandoned farmland, seasonally flooded territories or gardens). The new sites are situated in the humid warm-temperate Colchic lowland of W Georgia, SW Caucasus. Both populations appeared relatively well established, consisting of woody shrubs c. 1.3 m tall. Presumably S. rhombifolia has been introduced accidentally to Georgia. The seeds of Sida L. are dispersed by wind, humans, animals and rainwater, and those of S. rhombifolia are frequently disseminated when their barbed awns stick to animals, clothing and other objects. In Georgia, the species has spread probably by seeds carried on vehicles linked to commercial activities (e.g. grain importation) or on migrating birds. The plants inhabit slightly trampled vegetation of the phytosociological class Digitario sanguinalis-Eragrostietea minoris Mucina & al. ( Mucina & al. 2016), accompanied by Cynodon dactylon (L.) Pers., Paspalum dilatatum Poir. , Perilla frutescens (L.) Britton, Solanum pseudocapsicum L. and Sporobolus indicus (L.) R. Br. The only species of Sida previously reported from Georgia is S. spinosa L., an annual alien weed ( Valdés & Raab-Straube 2011 +). Further spreading of S. rhombifolia View in CoL across W Georgia is predictable, similar to numerous other subtropical and tropical species, due to the favourable climate of the region, which is warm-temperate and humid all year round ( Ponert 1977; Sharabidze & al. 2018).

P. Novák & G. Tavilla

A

Harvard University - Arnold Arboretum

BRNU

Masaryk University

G

Conservatoire et Jardin botaniques de la Ville de Genève

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Malvales

Family

Malvaceae

Genus

Sida

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF