Home Page     Kingdom Index      Plant Index    Magnoliopsida Index      Apiaceae Index

Bupleurum americanum Coult. & Rose
26 photos.
"American thorough-wax" or "American thorow wax". A plant found in the lowlands
as well as in the alpine regions.

ITIS Taxonomic Serial No. 29605









1.  Mid-June, two umbels in bloom.

2.  Different crop of same photo.

3.  Mid-June, umbels in bud.

4.  Side-view of previous plant.

5.  Late May, plant in bud.

6.  Early June, long lower leaves.

Photos 7-26 are of alpine plants taken at
an elevation of 3660 ft.  The alpine plants are
much shorter than the lowland plants and
the individual blossoms are quite variable.

7. May 30, 2012.  Profole view of a young
plant showing the emerging terminal umbel
and the long linear basal leaves.

8. May 30, 2012.  Higher angle view of the
young plant in photo 7.  Note the large
involucre beneath the umbel and the smaller
involucres beneath each of the five umbellules.
  The petals curve over and almost entirely
enclose the individual pistils.

9.  June 4, 2012.  Top view of umbel which
is beginning to expand.  One of the umbellules
has two anthers in view.

10. June 11, 2012.  High angle view of a
plant.  Note that the peduncles of the umbel
and the umbellules have lengthened.

11. June 11, 2012  Top view of the plant in
photo 10.  More anthers are visible especially
in the center flower of each umbellule

12.  June 11, 2012.  Closer view of two of the
umbellules in photo 11.  Filiments of some of the
stamens are now visible.

13.  June 22, 2014.  Plant with some anthers
just emerging .

14.  June 15, 2012.  Top view of the main umbel
of the plant in photo 13.  The petals have pulled
back to expose the pistils and recessed paired
styles are beginning to emerge at the centers
of the pistils.

15.  June 15, 2012.  Close-up view of an umbellule.

16. June 25, 2012.  Close-up view of three
umbellules.  The paired styles have emerged.

17.  June 25, 2012.  A plant with five umbellules
on the main umbel and three secondary umbels
each with three umbellules.  The petals on the
individual flowers of the main umbel have
turned yellow and the pistils are green, while
on the secondary umbel the petals and pistils
are light brown.

18.  June 25, 2012.  Close-up of one of the
umbellules in photo 17.

19.  June 25, 2012.  Another umbel.  Note again
that the center blossom in each umbellule is
at an advanced tage compared to the other

20.  July 5, 2012.  A plant at an advanced
stage.  The petals have dropped and capsule
development has begun.  The capsules are green
with dark brown tops.

21.  July 5, 2012.  A typical umbellule with
blossoms having dark brown pistils and
yellow petals. However, the canter blossom
has a lighter pistil and the five petals have
now curled under the top of the pistil.

22.  July 5, 2012.  Another umbellule with duller
yellow petals and brownish-yellow pistils.
Two of the petals on the center flower have

23.  July 5, 2012.  An umbellule with black,
well-developed capsules

24.  July 5, 2012.  A plant photographed to show
the involucres beneath the individual

25.  July 24, 2012.  A dying plant.

26.  July 24, 2012.  Closer view of the plant
in photo 25.  The developing capsules are gray
with dark-brown tops.

Photos 1 and 2 taken along the Ketchem
Creek road
65°  30.3' N,  144° 43.7' W
Elev. 1000 ft.

Photos 3-6 taken on the Ketchem Rocks.
A series of granite tors located
six miles south of Central, Alaska.
65°  29.1' N,  144° 45.2' W
Elev. 1300 ft.

Photos 7-26 taken on the west side
of the mountain listed as Eagle Summit
by USGS.
Latitude: N 65° 28' 46.905"
Longitude: W 145° 24' 4.93"
Altitude: 1115.27 m.