Tropidocarpum gracile

Hooker
Icon. Pl. 1: plate 43. 1836.
WeedyIllustrated
Synonyms: Tropidocarpum dubium Davidson Tropidocarpum gracile var. dubium (Davidson) Jepson Tropidocarpum gracile var. scabriusculum (Hooker) Greene Tropidocarpum macrocarpum Tropidocarpum scabriusculum
Treatment appears in FNA Volume 7. Treatment on page 532. Mentioned on page 531.

Plants sparsely to densely hirsute basally, trichomes simple, to 1.5 mm, these mixed with fewer, forked, stalked ones, sparsely pubescent distally. Stems usually ascending, prostrate, or decumbent, rarely erect, (0.4–)1–4.5(–6) dm. Basal leaves: petiole (0.3–)1–2.5(–3.5) cm; blade (1.5–)2.5–10(–15) cm, margins pinnatifid to pinnatisect; lobes 3–8(–12) on each side, ovate, oblong, or linear, (0.1–)0.6–2(–3) cm × (0.5–)1–3(–6) mm, shorter than terminal, margins entire, dentate, or pinnatifid. Cauline leaves: (proximal) petiolate or (distal and bracts) sessile; blade similar to basal, smaller and less divided distally. Fruiting pedicels erect to ascending, straight, (4–)6–17(–35) mm, pubescent. Flowers: sepals 2.5–4 × 0.7–1.5 mm, glabrous or pubescent; petals obovate to spatulate, 3–6 × 1.5–4 mm, not clawed; filaments 2.5–4 mm; anthers 0.5–0.6 mm. Fruits narrowly linear, (25–)30–60(–70) × 1.5–2(–3) mm, length 13–46 times width; valves 2, thin-leathery, smooth, usually pubescent or puberulent, rarely glabrescent, trichomes simple, retrorse; septum incomplete or absent; ovules 30–70 per ovary; style (0.3–)0.8–2.5(–4) mm. Seeds dark brown, 1.2–1.6 × 0.7–1 mm. 2n = 16.


Phenology: Flowering Mar–May.
Habitat: Roadsides, fields, hillsides, grassy pastures, sandy washes, sage scrub, chaparral, ravines, beaches, gravel flats
Elevation: 0-1200 m

Distribution

V7 841-distribution-map.gif

Calif., Mexico (Baja California).

Discussion

Tropidocarpum gracile is known from central and coastal to southernmost California.

Selected References

None.

Lower Taxa

None.

... more about "Tropidocarpum gracile"
Ihsan A. Al-Shehbaz +
Hooker +
Calif. +  and Mexico (Baja California). +
0-1200 m +
Roadsides, fields, hillsides, grassy pastures, sandy washes, sage scrub, chaparral, ravines, beaches, gravel flats +
Flowering Mar–May. +
Weedy +  and Illustrated +
Tropidocarpum dubium +, Tropidocarpum gracile var. dubium +, Tropidocarpum gracile var. scabriusculum +, Tropidocarpum macrocarpum +  and Tropidocarpum scabriusculum +
Tropidocarpum gracile +
Tropidocarpum +
species +