Difference between revisions of "Balsamorhiza subg. Artorhiza"

(Nuttall) W. M. Sharp

Ann. Missouri Bot. Gard. 22: 115. 1935.

Basionym: Artorhiza Nuttall Trans. Amer. Philos. Soc., n. s. 7: 350. 1840
Synonyms: Balsamorhiza sect. Artorhiza (Nuttall) Jepson
Treatment appears in FNA Volume 21. Treatment on page 94. Mentioned on page 93, 95, 98, 99.
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|tribe=Asteraceae tribe Heliantheae
 
|tribe=Asteraceae tribe Heliantheae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae
 
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae

Latest revision as of 20:10, 5 November 2020

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.