Wild Florida Photo - Sida ulmifolia - Common wireweed

Sida ulmifolia

Common wireweed
Common fanpetals
Southern sida

Synonym(s): Sida acuta

Florida native

Orange Co. FL 12/29/06
Volusia Co. FL 12/23/01
Orange Co. FL 12/29/06
Matanzas Prov, Cuba 02/18/19
Matanzas Prov, Cuba 02/18/19
Volusia Co. FL 12/23/01

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A common plant of disturbed sites throughout the peninsula and in some north Florida and panhandle counties. The range includes the coastal states from Texas to South Carolina, plus Pennsylvania, New Jersey, Hawaii, Puerto Rico and the Virgin Islands.
A perennial shrub-like herb with erect minute stellate-hairy stems up to 1m (3 ft.) tall. Leaves are lanceolate to ovate, 3-9cm (1-1/8 to 3-1/2 in.) long and 2 to 4 times as long as wide with serrate margins at least near the tip. Stipules are often longer than the petioles which are typically 1/10 the length of the leaf blade. The yellow-white flowers have five petals with the bases united having the appearance of a fan shape. Calyx consists of triangular ribbed lobes 6-8mm (1/4 to 1/3 in.) long and often ciliate. The pedicels are less than 1 cm (~ 3/8") long.


Sida ulmifolia is a member of the Malvaceae - Mallow family.

Date record last modified: Sep 25, 2021

Paul Rebmann Nature Photography at pixels.com