Rock Onion
Allium macrum
Synonym: Allium equicaeleste
The photo above shows a close-up of the inflorescence of rock
onion ? as seen along Road K6000 near an elevation of 2780'
on the southeast side of Mt. Adams.........May 22, 2005. Note that
the middle of each tepal bears a longitudinal, green stripe and that the stamens
are slightly longer than the tepals.
The photo above shows the form of rock onion, with a pair
of basal leaves (which are whithering by bloom time). Note that the leaves are
u-shaped in cross-section, and that they are about equal in length to the scape,
or slightly longer. Photographed along Road K6000 near an elevation
of 2780' on the southeast side of Mt. Adams.........May 22, 2005.
The photo above shows what appears to be a
mason bee visiting rock onion as seen along Road K6000 near an elevation of
2780' on the southeast side of Mt. Adams.........May 22, 2005.
The photo above shows rock onion along Rd K6000
on the southeastern side of Mt. Adams.
Photographed along Road K6000 near an elevation
of 2780' on the southeast side of Mt. Adams........May 22, 2005. Plants
were just beginning to bloom on this date, and the outer surface of the tepals
bears a central, greenish stripe. The scape is not flattened, and is about equal
to or shorter than the two, channeled leaves. Tapertip onion (Allium
accuminatum) is also found on this site.
Paul Slichter