Flora of North America species comparison

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Tragopogon porrifolius

Tragopogon dubius

common salsify, oyster plant, purple goat's beard, purple oyster salsify, purple salsify, salsifis cultivé, salsify, vegetable oyster

fistulous goat's beard, goat's beard, salsifis majeur, western salsify, yellow salsify
Habit Plants 40–100(–150) cm. Plants (30–)40–80(–100) cm.
Leaves

apices straight (not recurved or coiled), faces usually glabrous.

apices straight (not recurved to coiled), faces initially tomentulose to floccose, soon glabrescent.
Peduncles

distally inflated.

distally inflated.
Involucres

conic in bud.

conic in bud.
Outer

florets usually shorter than or equaling phyllaries;

corollas purple.

florets much shorter than phyllaries;

corollas yellow.
2n

= 12.

= 12.

Tragopogon porrifolius

Tragopogon dubius
Phenology Flowering Apr–Aug. Flowering early summer.
Habitat Disturbed sites Disturbed sites and less disturbed sites
Elevation 200–2000 m (700–6600 ft) 10–2500 m (0–8200 ft)
Distribution
from FNA
AR; AZ; CA; CO; CT; DC; DE; GA; IA; ID; IL; IN; KS; KY; MA; MD; ME; MI; MO; MT; NC; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NS; ON; QC; Europe; n Africa; Australia [Introduced in North America; introduced, Pacific Islands (Hawaii)]
[WildflowerSearch map]
[BONAP county map]
from FNA
AR; AZ; CA; CO; CT; DE; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NF; NS; NT; ON; QC; SK; YT; Europe; Australia; s Africa [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
Discussion

Tragopogon porrifolius is occasionally cultivated in Europe and naturalized across much of North America. It grows typically in sites drier than those of T. pratensis and in sites shadier and/or moister than those of T. dubius. As currently circumscribed, it may not be monophyletic, and nomenclatural changes for the populations here may be required. In North America, T. porrifolius hybridizes with both T. dubius and T. pratensis (= T. ×neohybridus Farwell, described from North America, and T. ×mirabilis Rouy, described from Europe).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Tragopogon dubius is naturalized across much of North America. It typically grows in sites drier than those where T. pratensis is found.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 306. FNA vol. 19, p. 305.
Parent taxa Asteraceae > tribe Cichorieae > Tragopogon Asteraceae > tribe Cichorieae > Tragopogon
Sibling taxa
T. dubius, T. mirus, T. miscellus, T. pratensis
T. mirus, T. miscellus, T. porrifolius, T. pratensis
Name authority Linnaeus: Sp. Pl. 2: 789. (1753) Scopoli: Fl. Carniol. ed. 2, 2: 95. (1772)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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