TWITA, BRENUETUATTA, TWETA ( SIDA ACUTA)
Preferred Scientific Name
- Sida acuta Burman f.
Preferred Common Name
- sida
Other Scientific Names
- Malvastrum carpinifolium (L.f.) A Gray
- Malvinda carpinifolia (L.f.) Medik.
- Sida acuta subsp. carpinifolia (L. f.) Borss. Waalk.
- Sida acuta var. carpinifolia (L. f.) K. Schum.
- Sida acuta var. intermedia S. Y. Hu
- Sida acuta var. madagascariensis Hochr.
- Sida berlandieri Turcz.
- Sida bodinieri L.f.
- Sida carpinifolia L. f.
- Sida carpinifolia f. acuta (Burm. f.) Millsp.
- Sida carpinifolia f. spiraeifolia (Link) Millsp.
- Sida carpinifolia var. acuta (Burm. f.) Kurz
- Sida chanetii Gand.
- Sida frutescens Cav.
- Sida garckeana Pol.
- Sida jamaicensis Vell.
- Sida lancea Gand.
- Sida lanceolata Roxb.
- Sida orientalis DC.
- Sida planicaulis Cav.
- Sida scoparia Lour.
- Sida spiraeifolia Link
- Sida spiraeifolia Willd.
- Sida stauntoniana DC.
- Sida ulmifolia Mill.
- Sida vogelii Hook. f.
International Common Names
- English: broom grass; broomweeds; cheeseweed; clock plant; common fanpetals; common wireweed; morning mallow; prickly sida; southern sida; spiny-head sida; wire weed
- Spanish: babosilla; escoba blanca; escobita; escobita dulce; malva colorada; malva de Castilla; malva de platanillo
- French: herbe à balais; herbe à panniers; herbe dure; herbe panier; sida à feuilles aiguës
- Chinese: huang hua ren
Local Common Names
- Australia: spinyhead sida
- Bahamas: wire-weed
- Brazil: guaxuma; relógio-de-vaqueiro; relógio-vassoura; vassonrinha curraleira; vassourinha-preta
- Cambodia: kantrang bay sar
- Colombia: escoba; escobilla
- Cuba: malva bruja; malva de caballo
- Dominican Republic: malva té
- Ecuador/Galapagos Islands: escoba negra; escobilla negra
- El Salvador: escoba; escobilla cabezuda; escobilla negra
- Fiji: deni vuaka; paddy's lucerne
- Germany: Samtmalve, Südliche
- Haiti: balai cing heures; guimauve à petites fleurs; herbe connaît; petit lalo; ti-lalo
- Honduras: huinar
- Indonesia: galoenggang; sadagori
- Lesser Antilles: balai; balai-onze-heures; balai-savane; balie; balye midi; balye onze; balye savann; soap bush; sweet broom
- Malaysia: bunga telur belangkas; dukong anak; ketumbar hutan; lidah ular; pokok kelutut putih; sedeguri; seleguri; snake's tongue; spring-headed sida
- Mexico: bobosilla; chichibe; escobilla blanca
- Philippines: basbasot; escuba; surusighid; walis walisan
- Samoa: mautofu
- South Africa: taaiman
- Sri Lanka: gas belila; kesar belila; malai tanki; palampasi; visha peti
- Taiwan: syi ye jin wu shih hwa
- Thailand: mai kward; mai kwat; yaa khat bai yaao; yung kwat; yung pat
- Tonga: te'ehoosi
- Trinidad and Tobago: ballier savanne
- USA: southern sida
- Venezuela: escoba amarilla; escoba dura
- Vietnam: bai nhon
S. acuta can be readily confused with S. rhombifolia, and hybridization between the two species has been reported (Dekker, 1992). However, Viarouge et al. (1997) provide a valuable guide to identification of Sida species by vegetative characters, in which they point out that S. rhombifolia tends to have broader, more rhomboid leaves with dentation restricted to the upper half or two-thirds of the leaf margin, while the leaf margin in S. acuta is dentate throughout. The undersides of the leaves of S. rhombifolia are also more densely covered in stellate hairs. Other characters suggested by other authors include the stipules, which are uniformly narrow in S. acuta but of unequal width in S. rhombifolia; also the seeds of S. rhombifolia have only one awn; and the flowers are on stalks 1 to 3 cm long, much longer than those of S. acuta. On a local basis there may be confusion with some of the other Sida species which can occur as weeds; Viarouge et al. (1997) help to sort out nine species of western Africa. Ten species are described among weeds of Brazil (Lorenzi, 1982) and there is a useful table distinguishing the six that may occur in East Africa (Ivens, 1968). The Weeds of Australia (2011) factsheet for the species lists characters by which it can be distinguished from spiny sida (S. spinosa), common sida (S. rhombifolia), flannel weed (S. cordifolia), spiked sida (S. subspicata), spiked malvastrum (Malvastrum americanum) and prickly malvastrum (M. coromandelianum).
M. coromandelianum is more prostrate than S. acuta, has broader, irregularly serrated leaves with a suggestion of several uneven lobes, and has distinctive, circular, ribbed seed capsules.
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