bolting plant in flower and fruit
close-up of flower with fruiting silique below
rosette with taproot
above: just-germinated seedlings (late March)
below: one year rosette
Each row is a species. Click on the species name in the table below or simply scroll down. Hovering your cursor over the first picture in each row will give you the species name and family. Clicking on each picture will give you an expanded version.
. |
|
|
|
|
||
|
bolting plant in flower and fruit |
close-up of flower with fruiting silique below |
rosette with taproot |
above: just-germinated seedlings (late March) |
 |
 |
 |
 |
||
bark indistiguishable from white oak |
leaves are dentate, not lobed |
emerging leaves (4/25/04) |
 |
  |
|
|||
flower in male phase (early); note stames exerted,
stigma closed |
note fruiting capsules at base of raceme flower buds are at the tip (plant flowers from the base of the infloresecence to the tip) |
both flowers in (later) female phase; note stamens reflexed and stigma open |
 |
 |
|||||
young frond with two fiddle-heads |
basal-most pinnae are NOT longest (better picture
coming soon!) |
 |
 |
|
|||
note the "cut" leaves |
April 4, 2004: flowers not yet open |
|
 |
 |
|||||
unmistakable when in flower |
leaves indistinguishable from D. canadensis |
 |
 |
 |
||
whole-plant view, note leaf morphology |
close-up of flowers; one of the earliest flowering
species (mid March to mid April) |
immediately post-flowering |
 |
 |
 |
||||
young tree with some thorns (some indivs. lack thorns
completely) |
mature tree with dense thorns. Also note side-flaring
bark plates |
thorns are large and branched |
|
 |
|
|
|||
flower buds and last season's distinctive liver-shaped leaf |
variable flower color
|
|
|
|
|
distinctive paired leaflets |
top: first day flower |
top: recently emerging plant (4/4) bottom: a few days later |
 |
 |
|
||
leaves entire and gray-green, flowers still in bud
(4/4) |
flowers open (4/25) |
 |
The leaves of the two common species
in our area are indistinguishable morphologically. Osmorhiza longistylus has
2 long styles on the pistil
which persist on the fruit, and the foilage smells like licorice. O.
claytonii lacks the long styles and does not have strong odor. |
 |
||
early spring view (4/4), leaves doubly compound (twice
three-foliate) |
more mature foliage (4/25/04) |
 |
 |
 |
|||
Flowers last only a few days. Note first-day flowers with spreading stamens |
later, stamens wither onto the stigma |
 |
 |
| ||
The earliest flowering species in temperate eastern
North America. A cluster of hoods, in early March |
spathe with spadix inside |
In late March/early April, leaves begin to emerge |
 |
 |
 |
|||
| variable petal number per flower |
This species is protogynous. Older flower in middle
is in male phase. Young lateral flowers are in female phase with clusters
of undeveloped green stamens surrounding the receptive stigmas |
 |
 |
||||
|
very early flowering -- mid March to mid April
|
smallest of the trilliums; flower is peduncled
|
 |
 |
||||
|
broad, parallel-veined leaves
|
leaves die back with tree canopy leaf-out, then it
flowers
|
 |
 |
||||
|
white nodes; common in ground seeps and floodplains
|
often in huge clones
|
