Difference between revisions of "Isocoma acradenia var. bracteosa"
Phytologia 70: 81. 1991.
Endemic
Basionym: Isocoma bracteosa Greene Leafl. Bot. Observ. Crit. 1: 170. 1906
Synonyms: Haplopappus acradenius subsp. bracteosus (Greene) H. M. Hall
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|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Isocoma | |genus=Isocoma | ||
Latest revision as of 20:58, 5 November 2020
Leaf blades mostly 50–150 mm, margins of proximal usually shallowly toothed, of distal entire or serrulate. Involucres 7–8 mm. Phyllary apices spinulose-aristate. Florets 20–27. 2n = 12.
Phenology: Flowering Aug–Oct.
Habitat: Salt flats
Elevation: 0–20 m
Discussion
In the limited zone of contact between vars. bracteosa and acradenia, intermediates are rare. The two differ in chromosome number and significantly in habitat (altitudes are essentially non-overlapping). Field studies may show them to warrant distinction at specific rank.
Selected References
None.
Lower Taxa
None.