Rapistrum rugosum

(L.) All. (1785)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Brassicales Family: Brassicaceae Genus: Rapistrum

Description

Key Characters:

Growth Form: Plants hispid proximally, glabrous distally.

Stems: Stems (1–)2–10(–15) dm.

Roots:

Leaves: Leaves simple. Alternate. Basal leaves with 1–5 lobes each side, 2–25 cm, lateral lobe oblong or ovate, terminal lobe suborbicular or ovate, larger than lateral; cauline leaves blade simple or sinuately lobed. Margins of basal leaves irregularly dentate; cauline leaves margins subentire or dentate. Petioles of basal leaves 1–5 cm. Stipules absent.

Flowers: Flowers in racemes (corymbose, several-flowered), greatly elongated in fruit. fruiting pedicels erect [ascending], (usually appressed to rachis), slender to stout. Flowers bisexual (perfect); fruiting pedicels erect, (appressed to rachis), 1.5–5 mm. Calyx of 4 sepals; sepals 2.5–5 mm. Corolla of 4 petals; petals pale yellow, 6–11 × 2.5–4 mm. Stamens 6, tetradynamous; filaments not dilated basally; filaments 4–7 mm; anthers 1.2–1.5 mm. Ovary superior; styles 1–3(–5) mm.

Fruit: Fruits: valvular segment ellipsoid; 0.7–3 × 0.5–1.5 mm; terminal segment globose or ovoid; 1.5–3.5 × 1–2.8 mm; usually rugose or ribbed; rarely smooth. Seeds 1.5–2.5 mm.

Ploidy: 2n = 16

Habitat: Roadsides; disturbed sites; waste places; fields; grassy banks; ballast.

Elevation Range: 0–2000 m.

Historical Distribution

Synonyms (57)

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized

Dispersal Agents


Pollinators

Specimens

Bibliography

Name Published In: Fl. Pedem. 1: 257 (1785)

Other References

Lorence et al. 1995:27 (NEWNAT/K, DESCR)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Rapistrum rugosum (L.) All. waimea, hwy 50 between eleele and kalaheo, ~2.1 mi. e of eleele shopping center Roadside. PRESERVED_SPECIMEN flynn, t. lorence, d. collector number: 2182 Kauai BISH 5/5/1987
2 Rapistrum rugosum (L.) All. Waimea, Hwy 50 between Eleele and Kalaheo, ~2.1 mi. E of Eleele Shopping Center Roadside. PRESERVED_SPECIMEN Flynn, T. 2182 Kauai BISH 5/5/1987
3 Rapistrum rugosum (L.) All. waimea dist., hwy 50 between eleele and kalaheo, ca 2.1 mi e of eleele shopping center PRESERVED_SPECIMEN t. w. flynn & d. h. lorence 2182 Kauai US 5/5/1987
4 Rapistrum rugosum (L.) All. KAUAI: Waimea District. Hwy 50 between Eleele and Kalaheo, c a 2.1 miles east of Eleele Shopping Center. Elev. ca 440 ft. PRESERVED_SPECIMEN Tim Flynn 2182 Kauai PTBG 5/5/1987
5 Rapistrum rugosum (L.) All. Waimea Dist., Hwy 50 between Eleele and Kalaheo, ca 2.1 mi E of Eleele Shopping Center PRESERVED_SPECIMEN Flynn, T. W.; Lorence, D. H. 2182 Kauai US 5/5/1987