Tragopogon porrifolius |
Tragopogon pratensis |
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oyster plant, purple salsify |
jack go to bed at noon, meadow salsify |
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Habit | Glabrous biennial, 4-10 dm. tall, often branched, with milky juice. | Mostly glabrous biennial, often branched, 1.5-8 dm. tall, with milky juice. |
Leaves | Leaves elongate, up to 30 cm. long and 2 cm. wide, tapering gradually from the base. |
Leaves elongate, up to 30 cm. long and 2 cm. wide, abruptly narrowed a little above the base, the margins wavy, the tips recurved. |
Flowers | Heads solitary at the ends of branches, the peduncles enlarged and hollow under the heads; involucral bracts in a single series, equal, 5-11, 2.5-4 cm. long in flower, distinctly surpassing the purple, ligulate corollas, elongating to 4-7 cm. in fruit; pappus of a single series of whitish, uneven-length, plumose bristles, the plume branches interwebbed. |
Heads solitary at the ends of branches, the peduncles not enlarged under the heads; involucral bracts in a single series, equal, about 8, 12-24 mm. long in flower, equaling or shorter than the chrome-yellow, ligulate corollas, elongating to 18-38 mm. in fruit; pappus of a single series of whitish, uneven-length, plumose bristles, the plume branches interwebbed. |
Fruits | Achenes stout, 2.5-4 cm. long, the body 10-16 mm. long, abruptly contracted to the long, slender beak. |
Achenes 15-25 mm. long, the body abruptly contracted to the slender, relatively short beak. |
Tragopogon porrifolius |
Tragopogon pratensis |
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Flowering time | April-August | May-August |
Habitat | Roadsides, fields and waste places, usually where moist. | Roadsides, fields and waste places, usually in slightly moist areas. |
Distribution | Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
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Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
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Origin | Introduced from Europe | Introduced from Europe |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
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