Home Brassicaceae Boechera

Boechera grahamii (Lehmann) Windham & Al-Shehbaz

Common Name: ROCK CRESS
Coefficient of Conservatism: 6
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt B-Forb

Arabis divaricarpa of Michigan Flora.

Sandy or gravelly clearings and borders of forests (especially aspen) and shores, rock outcrops and rocky summits.

The cauline leaves are usually numerous, short, and crowded, as in B. missouriensis, but the basal leaves are entire or slightly toothed and ± stellate-pubescent on both surfaces. The fruit is ordinarily widely spreading or even somewhat down-curved, up to 9.5 cm long, but on some plants the siliques are very short (ca. 2 cm), ascending on divaricate pedicels. Plants with very young fruit not displaying the strongly spreading aspect compared to the compact infructescence of Turritis glabra may be confused with the latter species, but differ in the shorter sepals and pink petals; in T. glabra, the pubescence at the base of the stem is generally denser, with more straight, spreading hairs. Apparently derived from a cross of the more western and northern B. collinsii and B. stricta.

N. Martineau

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Counties
Alpena
Baraga
Benzie
Cheboygan
Cheboygan or Emmet
Chippewa
Delta
Dickinson
Emmet
Ionia
Iron
Keweenaw
Lake
Leelanau
Luce
Mackinac
Marquette
Oakland
Ontonagon
Oscoda
Schoolcraft

Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March, 17, 2025
https://lsa-miflora-p.lsait.lsa.umich.edu/#/record/254