Annual herb, erect or branched from base, up to 0.5 m high. Stems and flowering branches spreading, hispid with patent setae and many soft, retrorse hairs. Leaves alternate, simple, sessile, rosulate at base of stem, diminishing in size towards inflorescence, hairy, trichomes tending to be ascending instead of widely spreading, trichome complement consisting of setae with multicellular bases 2-or 3-lay-ered and soft, straight hairs; blade narrowly ovate to ovate, basal leaf blades (40-)100-110 x 7-9(-12) mm, base cordate, apex acute, margins entire, setae on blade of different lengths interspersed with thin ±straight hairs, setae on midrib of lower surface bristly. Flowers in terminal helicoid cymes, not much, if at all exserted, ebracteate; cymes elongating in fruiting stage, cymules up to 170 mm long; fruiting pedicels up to 2.5 mm long. Calyx deeply divided, densely setulose with long, thin hairs interspersed with bristly setae; lobes narrowly ovate, accrescent, up to 9 mm long in mature fruit. Corolla pale yellow, yellow or orange-yellow, marked with vermillion in throat; tube cylindric, 4.5-8.0 mm long, throat unappendaged; limb 1.5-3.0 mm wide; lobes oblong, ±0.75 x 1.5 mm, with gibbosities at base (? undeveloped fornices). Stamens epipetalous, included, anthers subsessile. Gynoecium bicarpellate, ovary 4-lobed, 4-locular with a single ovule in each locule, without a collar-like ring around base; style gynobasic, included, almost as long as corolla tube, filiform, undivided, stigma capitate; gynobase pyramidal. Fruit of four nutlets; nutlets ovoid-trigonous, ±2.5-3.0 mm long, rugose, tuberculate and verrucose with verrucae minutely muricate, attached to receptacle for only part of length.
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Annual herb, up to 0.5 m high; roughly pubescent. Leaves sessile; blade narrowly ovate to ovate, basal blades 100-110 x 7-9 mm, base cordate, apex acute to rounded, margins entire, diminishing in size towards inflorescence. Flowers in tightly rolled scorpioid cymes. Calyx deeply divided; lobes narrowly ovate, accrescent, up to 9 mm in mature fruit. Corolla naked in throat, yellow to orange. Stamens included. Flowering time July-Nov. Fruit of rugose, tuberculate and verrucose nutlets.
Roughly hairy annual, up to 500 mm tall. Leaves with blade narrowly ovate to ovate, apex acute to rounded. Flowers in tightly rolled, helicoid cymes, corolla yellow to orange. Fruit rugose, tuberculate and verrucose.
Annual herb, up to 0.8 m high. Leaves 30-80 x 5-15 mm. Corolla shorter than 10 mm. Inflorescence ebrac-teate, flowers sessile. Nutlets muricate, setulose. Flowers pale yellow.
Roughly hairy annual to 50 cm. Leaves ovate-lanceolate. Flowers in tightly rolled, helicoid cymes, yellow to orange.
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