Flora of North America species comparison

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Euclidium

euclidium, mustard, syrian mustard
Habit Annuals; not scapose; scabrous, trichomes stalked, 2-forked, submalpighiaceous, mixed with fewer, simple, and, rarely, 3-forked ones, usually different sizes.
Stems

erect or ascending, unbranched or branched.
Leaves

basal and cauline;

petiolate, sessile, or subsessile;

basal (often withered by flowering), not rosulate, petiolate, blade margins entire, dentate, or repand, rarely pinnatifid;

cauline sessile or subsessile, blade similar to basal, margins entire, dentate, or repand.
Racemes

(corymbose), elongated in fruit.
Flowers

sepals ovate to oblong;

petals white, narrowly spatulate, (slightly longer than sepals), claw slightly differentiated from blade (shorter than sepals, apex emarginate);

stamens slightly tetradynamous;

filaments not dilated basally;

anthers ovate, (apiculate);

nectar glands (4), lateral, 1 on each side of lateral stamen.
Fruiting pedicels

erect, stout.
Fruits

silicles (nutletlike), indehiscent, sessile, ovoid, subterete to slightly 4-angled;

valves not veined, (thickened, woody), scabrous;

replum strongly expanded laterally;

septum complete, (thickened);

ovules 2 per ovary, (subapical);

style (persistent), obsolete or distinct;

stigma capitate, 2-lobed (lobes not decurrent).
Seeds

aseriate, plump, not winged, oblong;

seed coat (smooth), not mucilaginous when wetted;

cotyledons accumbent or obliquely so.

Euclidium
Distribution
from USDA
e Europe; c Asia; w Asia [Introduced in North America; introduced also in Australia]
[BONAP county map]
Discussion

Species 1.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 552. Author: Ihsan A. Al-Shehbaz.
Parent taxa Brassicaceae > tribe Euclidieae
Subordinate taxa
E. syriacum
Name authority W. T. Aiton: in W. Aiton and W. T. Aiton, Hortus Kew. 4: 74. (1812)
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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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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