Taraxacum officinale F.H.Wigg.

Herb. Univ. Arosteloctamensis AMD
Pollen very variable in diameter. Spe-
cimen at the triploid (2n=24) or higher
level.
ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA
EXPÉDITION TO GREENLAND, 1891
Prof. ANGELO HEILPRIN in chargé.
NEW YORK BOTANICAL GARDEN
Collected by Dr. W. H. BURK.
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