Flora of North America species comparison

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Alliaria

alliaria, garlic mustard
Habit Plants with garlic smell when crushed; not scapose; glabrous or pubescent, trichomes simple.
Stems

erect [decumbent], often branched distally.
Leaves

basal and cauline;

petiolate;

basal (often withered by anthesis or fruiting), rosulate, long-petiolate, blade margins crenate, dentate, or sinuate;

cauline shortly petiolate, blade margins dentate.
Racemes

elongated in fruit.
Flowers

sepals erect, oblong, lateral pair not saccate basally, (glabrous);

petals oblanceolate, (longer than sepals), claw obscurely differentiated from blade, (apex obtuse);

stamens slightly tetradynamous;

filaments not dilated basally;

anthers ovate or oblong, (apex obtuse);

nectar glands confluent, subtending bases of stamens.
Fruiting pedicels

divaricate or ascending, stout (almost as broad as fruit [slender, narrower than fruit]).
Fruits

siliques, sessile, linear [oblong], torulose or subtorulose, terete, subterete, or 4-angled;

valves each with prominent midvein and distinct marginal veins, glabrous [scabrous];

replum rounded;

septum complete;

ovules [4–]6–22 per ovary;

style obsolete or distinct (to 6 mm);

stigma capitate, entire.
Seeds

plump, not winged, oblong;

seed coat (longitudinally striate), not mucilaginous when wetted;

cotyledons incumbent.

Alliaria
Distribution
from USDA
Eurasia; n Africa [Introduced in North America]
[BONAP county map]
Discussion

Species 2 (1 in the flora).

Alliaria brachycarpa M. Bieberstein is endemic to Caucasus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 744. Author: Ihsan A. Al-Shehbaz.
Parent taxa Brassicaceae > tribe Thlaspideae
Subordinate taxa
A. petiolata
Name authority Heister ex Fabricius: Enum., 161. (1759)
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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