Angelica capitellata, synonym Sphenosciadium capitellatum, is a species of flowering plant in the family Apiaceae.
It is a stout perennial herb growing from a tuberous root and producing an erect stem often exceeding 1 meter (3+1⁄2 feet) tall and sometimes reaching 2.1 m (7 ft) overall.
The leaves are 10–40 centimeters (4–15+1⁄2 inches) long[3] and divided into several segments which bear widely spaced leaflets.
[3] The nearly spherical, headlike terminal umbellets contain many tiny white or purple-tinged flowers, whose protruding stamens make them appear very fuzzy in full bloom, as for the central umbels in the top right image.
[3] Ranger's buttons plants are quite similar to the other large Umbelliferae that share similar habitats: Sierra angelica and cow parsnip, but each has a very differently shaped leaf, and the other two have umbellets with quite distinct flowers, in contrast to the tight balls on ranger's buttons.