Colors

Data mode

Account

Login
Sign up

Copy permalink to share

Cardamine micranthera Rollins. Streambank Bittercress, Small-anthered Bittercress. Phen: Apr-May; May-Jun. Hab: Sand and gravel bars in creeks, swampy floodplain woods, seepage over rocks. Dist: A narrow endemic, known only from Stokes County, NC and Patrick County, VA, and apparently extirpated from Forsyth County, NC

Origin/Endemic status: Endemic

Other Comments: The description and key in RAB are partly in error, being based on the inadequate and unrepresentative material available at the time. C. micranthera is most closely related to C. rotundifolia, but also shows some affinities to C. pensylvanica. It can be distinguished from C. rotundifolia by the characters in the key; additionally, C. micranthera does not form proliferative branches from the upper nodes, generally branching from the base in vigorous plants, or unbranched in smaller plants. It can be distinguished from C. pensylvanica by its predominately simple leaves, especially those on the upper stem, the larger flowers, the petals 3-5 mm long (vs. 1.5-3 mm long), the fruiting pedicels thin, 10-20 mm long, spreading to ascending (vs. thick, 4-10 mm long, ascending). Wieboldt (1992) reasonably speculates that C. micranthera may be an in-breeding relative derived from C. rotundifolia in the Piedmont/Mountain interface.

Synonymy: = FNA7, K1, K3, K4, RAB, Va, Al-Shehbaz (1988a), Rollins (1993); = n/a – C, F, S, S13

Show in key(s)

Show parent genus

Wetland Indicator Status:

  • Eastern Mountains and Piedmont: OBL

Heliophily ?: 2

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.


Feedback

See something wrong or missing on about Cardamine micranthera? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.


Cite as...