Anderson (1980) cited Schultes, and described ruderalis as a short plant with broad, oblanceolate
2.5 cm diam., zygomorphic; sepals green, deltoid to elliptical or obovate to oblong, abaxial surface glabrous, 6-9.5 X 3-4.5 mm; petals yellow, two external, obovate, 7-9.5 X 4-5.5 mm, two internal, oblanceolate
, 7.5-9 X 3.5-5 mm, cuculus cordate to orbicular, bent around the stamens, 11-13 X 6-7 mm; stamens yellow, 6-7.5 mm long; staminoids yellow, 3-5 mm long; ovary yellow, tomentose, 5-8 mm long; style green, 3-4 mm long.
Verticils with 10-12 leaves of approximately equal length, free, straight, oblanceolate
, with maximum width above the middle and tapering basally and apically; blunt, obtuse apex.
Rosette-leaves 4-11 x 0.8-2.5 cm; entire; elliptical, oblong or oblanceolate
; rounded-obtuse or slightly mucronate at apex, gradually narrowing towards base; adaxial surface green or greyish, with some very long subrigid (4-7 mm) simple eglandular trichomes and, in some leaves, with few to numerous stellate trichomes (absent in others); abaxial surface whitish, with dense stellate trichomes and some long simple eglandular trichomes thinner than those of the adaxial surface.
spatulate to oblanceolate
petals 1-1.5 x 0.2-0.5 mm), four (2 median and 2 lateral) stamens (vs.
Leaves odd pinnate, petioles 2.5-7 cm long; leaflets (7-) 9-13 paired, obovate to oblanceolate
, 0.8-2.5 cm long, inevidently stigulose both surfaces, pale below; stipules semipersistent.
1/6-1/4 (-1/3)] stipes, narrowly oblanceolate
to linear-elliptic (vs.
The plant is about 1 m high with oblanceolate
green leaves, dentate at the top and marked with resinous points.
. This type is an inverted lance with the pointed part at the base and the rounded part at the tip.
Leaves Leaflet form (i) narrow oblanceolate
, (ii) oblanceolate
, (iii) obovate, (iv) round, and (v) obcordate.
Unique Characteristics: Leaf is elliptic to oblanceolate
; durability is an asset.