Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Brassicaceae, Key B: plants in flower, trichomes of plant present with some or most or all branched

Brassicaceae

Copy permalink to share | Check for keys that lead to this key

1 Flowers yellow.
  2 Trichomes sessile, medifixed; [tribe Erysimeae]
  2 Trichomes not sessile and medifixed.
    3 Leaves 2-3× pinnately dissected; [tribe Descurainieae]
      4 Cauline leaves not auricled; [tribe Alysseae]
      4 Cauline leaves auricled; [tribe Camelineae].
        5 Annual; petals yellow to pale yellow, fading whitish
        5 Perennial or biennial; petals creamy or pale yellow
1 Flowers white, pinkish, lavender, or blue.
          6 Leaves only basal; [tribe Arabideae]
          6 Leaves cauline (and often basal as well).
             7 Ovaries and young fruits not linear (instead pyriform, obovoid, obdeltoid, depressed globose, elliptic or otherwise not strictly linear throughout).
               8 Cauline leaves sessile and auriculate; [tribe Camelineae].
                 9 Petals pale yellow, fading to whitish
                       12 Ovules 1-2 per ovary; plants usually canescent (bearing a fine grayish-white pubescence); [tribe Alysseae]
                       12 Ovules 4 or more per ovary (2-10 in Lobularia); plants green, not obviously canescent (or only slightly in Lobularia).
                          13 Plants not scapose or with rosulate basal leaves, leaves cauline and usually abundant throughout the stems; larger plants often suffruticose; [tribe Malcolmieae]
                          13 Plants scapose, thus without cauline leaves (D. verna) OR strongly rosulate with well-spaced cauline leaves (D. ramosissima); plants herbaceous; [tribe Arabideae]
                                         20 Sepals 0.7-1.2 mm or >2.5 mm; of disturbed and natural habitats; seeds biseriate; [tribe Arabideae]