The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links
Habit Annuals (sometimes winter); not scapose; pubescent or glabrous.
Stems

erect or ascending to decumbent, often branched distally.

Leaves

basal and cauline;

petiolate;

basal (loosely) rosulate, blade margins pinnatifid to pinnatisect, (lobes) dentate or entire;

cauline similar to basal.

Racemes

(corymbose, several-flowered), considerably elongated in fruit.

Flowers

sepals erect, oblong, lateral pair not saccate basally;

petals white, oblanceolate, (longer than sepals), claw undifferentiated from blade, (apex obtuse);

stamens slightly tetradynamous;

filaments not dilated basally;

anthers ovate, (apex obtuse);

nectar glands lateral (minute), 1 on each side of lateral stamen.

Fruiting pedicels

divaricate-ascending, slender.

Fruits

siliques, sessile or subsessile, linear, torulose, straight, latiseptate;

valves each with obscure midvein, glabrous;

replum rounded;

septum complete;

ovules (20–)28–44 per ovary;

style distinct (conical);

stigma capitate.

Seeds

uniseriate, flattened, narrowly winged, orbicular or suborbicular;

seed coat not mucilaginous when wetted;

cotyledons accumbent.

x

= 8.

Planodes

Distribution
c United States; nw Mexico; s United States
[BONAP county map]
Discussion

Species 1.

Planodes virginicum has floated among Arabis, Cardamine, and Sibara. However, it is distinct from all three both morphologically and phylogenetically, and it appears to be most closely allied to Cardamine. It is known from Baja California; in the southeastern and some of the central United States, it has become weedy, especially in cultivated or abandoned fields.

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

Source FNA vol. 7, p. 492. Author: Ihsan A. Al-Shehbaz.
Parent taxa Brassicaceae > tribe Cardamineae
Subordinate taxa
P. virginicum
Name authority Greene: Leafl. Bot. Observ. Crit. 2: 220. (1912)
Web links