Burke: Raphanus raphanistrum vs. Raphanus sativus

	Raphanus raphanistrum	Raphanus sativus
	jointed charlock, wild radish	garden radish
Habit	Annual or biennial herb from a small taproot, sparsely pubescent with stiff, pungent hairs, the stems 3-8 dm. tall, freely-branched above.
Leaves	Basal leaves lyrate-pinnatifid, 6-20 cm. long; cauline leaves alternate, several, reduced, all petiolate.
Flowers	Inflorescence of large, often compound, bractless racemes; pedicles ascending, 1-2.5 cm. long; sepals 4, the outer pair saccate at the base; petals 4, usually yellow, often purple tinged or veined, clawed, obovate, 15-20 mm. long; stamens 6.
Fruits	Siliques terete, 4.5-6 cm. long and 3-6 mm. broad, 2-segmented, the lower segment short, not seed-bearing, the upper segment 1-celled, constricted between the seeds, tapering to a beak-like tip 1-2 cm. long.

	Raphanus raphanistrum	Raphanus sativus
Flowering time	May-October	May-July
Habitat	Roadsides, fields, ditches, wastelots, and other distrubed, open areas at low elevations.	Waste places.
Distribution	Occurring in scattered locations chiefly west of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]
Origin	Introduced, probably from the Mediterranean region	Introduced, probably from Mediterranean Europe
Conservation status	Not of concern	Not of concern
Sibling taxa	R. sativus	R. raphanistrum
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Raphanus sativus

jointed charlock, wild radish

garden radish

Habit

Annual or biennial herb from a small taproot, sparsely pubescent with stiff, pungent hairs, the stems 3-8 dm. tall, freely-branched above.

Leaves

Basal leaves lyrate-pinnatifid, 6-20 cm. long;

cauline leaves alternate, several, reduced, all petiolate.

Flowers

Inflorescence of large, often compound, bractless racemes; pedicles ascending, 1-2.5 cm. long;

sepals 4, the outer pair saccate at the base;

petals 4, usually yellow, often purple tinged or veined, clawed, obovate, 15-20 mm. long;

stamens 6.

Fruits

Siliques terete, 4.5-6 cm. long and 3-6 mm. broad, 2-segmented, the lower segment short, not seed-bearing, the upper segment 1-celled, constricted between the seeds, tapering to a beak-like tip 1-2 cm. long.