mycoheterotrophisms favoriter

Taraxacum subxanthostigma M.P. Christ. ex H. Øllg.

• Under light shade on dry-mesic hill slope in city park.
• Plant 39.5cm across
• Longest leaf ~20cm long
• Lateral leaf lobes triangular-deltoid in shape, interlobes bearing 1(-2) teeth, proximal lobes thinner to filiform.
• Interlobes darkened at least somewhat on the adaxial leaf surfaces, character more apparent abaxially and on less luxuriant, more stressed specimens. Margins of interlobes consistently very dark.
• Terminal leaf lobes short and triangular mostly with acute apices.
• Midribs pink-purple to pinkish white adaxially, decidedly pink-purple abaxially.
• Petioles winged, vibrant deep purple.
• Outer involucral bracts spreading to arcuate, ca. 3mm wide by 13mm long, often suffused purple especially following anthesis, this suffusion typically strongest in the proximal 1/2-2/3.
• Capitula ca. 5cm across
• Ligules greyish violet, ligule teeth yellow.
• Pollen present

Identified with help from Curtis Randall Björk.

Relevant sources:
• https://www.gbif.org/species/5694947
• https://www.gbif.org/occurrence/125826930
• https://www.artportalen.se/Media/Taxon/230947
• Richards, A.J. 2021. Field Handbook to British and Irish Dandelions. BSBI Handbook 23. Durham: Botanical Society of Britain and Ireland.

ACKC01.002