Eastern Mojave Vegetation Coll. No. 3286, Tripleurospermum inodorum  
 

 

Home Page
If you have a question or a comment about this photograph you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address. 		  Asteraceae Tripleurospermum inodorum
Photographed 4 December 2024.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA
Asteraceae

Tripleurospermum inodorum (L.) Sch.Bip.  Scentless Chamomile.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Left bank of Coal Creek, 1.31 km. west northwest of Coal Creek Canyon Fire Station #3, 14.9 km. north northwest of Golden. 39.87843°N, 105.29144°W. WGS 1984 Elev. 2049 m. Streamside, in a veritable rogues' gallery of weeds: Cynoglossum officinale, Hypericum perforatum, Potentilla recta, Verbascum thapsus, and Dactylis glomerata. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2024, issued: Mar 6, 2024, to: Tom Schweich.

Tom Schweich 3286. 3-Jul-2024

Coll. No. 3286, 3 July 2024, characters observed: Annual herb, to 60 cm.; Stem, glabrous; Leaves, cauline, petiole, 0 mm., blade, 50 mm. × 12 mm. wide, reduced distally, divided, 2× pinnate, lobes filiform; Inflorescence, in heads, not overlopped by leaves; Peduncles, 25-70 mm.; Involucre, 4 mm. × 11 mm. wide, glabrous, Phyllaries, in 3± equal series, 5.2 mm. × 1 mm. wide, tongue-shaped, strong central vein, mostly tan-brown, glabrous; Receptacle, epaleate; Flowers of 2 kinds; Rays, #20-24, tube 2 mm. + blade 9 mm. × 2.8 mm. wide, white, fertile; Disc flowers, many, tube 1.5 mm. +lobes 0.5 mm.; yellow, open; Pappus, scales, coroniform, 0.3 mm., ±equal; Cypsela, 1.2 mm., winged, blown, tuberculate(?).

Article records that use this photograph:

Other photos about Species - Asteraceae or Tripleurospermum inodorum.

 

[Home Page]

Date and time this page was prepared: 12/8/2024 2:15:58 PM