Show Lower Taxa
Difference between revisions of "Balsamorhiza subg. Artorhiza"
Ann. Missouri Bot. Gard. 22: 115. 1935.
Basionym: Artorhiza Nuttall
Synonyms: Balsamorhiza sect. Artorhiza (Nuttall) Jepson
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|publication year=1935 | |publication year=1935 | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae |
Revision as of 15:33, 18 September 2019
Taproots relatively massive; bark relatively thick, corrugated; rhizomes none; caudices usually multi-branched. Petioles mostly longer than leaf blades. Basal leaves: blades mostly rounded-deltate or deltate to triangular-deltate, bases sagittate or cordate to truncate, margins usually entire, sometimes crenate. Cauline leaves usually at mid stems. Ray corollas yellow.
Distribution
w North America.
Discussion
Species 3 (3 in the flora).
Members of subg. Artorhiza inhabit relatively deep, well-developed soils, flower only after at least 4–5 years, and attain ages of possibly 50 years.
Selected References
None.