Equisetum X ferrissii Clute
Family
Equisetaceae
Genus
Equisetum
Specific epithet
X ferrissii
Group
Pryer
Voucher
Voucher #1040
Date created
Feb 05, 2012
Date updated
Feb 05, 2012
K. M. Pryer 00-07 DUKE
Primary collector
K. M. Pryer
Collection number
00-07
Other collectors
D. M. Britton
Voucher location
DUKE
Date collected
Country of origin
Canada
Specific locality
Hunt-Wellington Co., Guelph Twp. Park, Marden Road. Guelph Twp. Conc. III, lot 15-16, north and east of old railroad bed, grid 554 252 map Guelph 40P/9, northwest corner of the pond. In open, moist grassy edge of pond in gravel.
Longitude (DD)
0
Latitude (DD)
0
Record Comments
Possibly E. X ferrissii Clute; or, less likely, E. laevigatum A. Braun. The spores, although young, seem to 1) lack chlorophyll; 2) be STRONGLY misshapen and irregular; and 3) have very irregular or sometimes non-existent elators. There is a hint of a double dark band around the sheaths, suggesting that this has some influence from Eq. hyemale (a putative parent of X ferrissii, along with E. laevigatum). The cones show a slight apiculum at the tip, not as strong as E. hyemale, but stronger than most specimens of Eq. laevigatum. I lean toward hybridity for this specimen. Another factor indicating an influence from Eq. hyemale is the fact that the sheeth teeth show a strong articulation line. - ARS, 31 Jan 2001
Group
Pryer
User
pryer
Date created
Mar 26, 2020
Date updated
Feb 25, 2018
1040
Extraction Comments
Pryer ----- DB1040 (KP00-07)
Group
Pryer
Date created
Feb 05, 2012
Date updated
Feb 05, 2012
rbcL sequence
Date created
Dec 31, 1969
Date updated
Feb 06, 2012
trnL-F sequence
Date created
Dec 31, 1969
Date updated
Feb 06, 2012
atp1 sequence
Date created
Dec 31, 1969
Date updated
Feb 06, 2012