Abstract
A broad survey of the Asteraceae, involving visual characters, was undertaken to ascertain the occurrence of possible Kranz‐type (C 4 ) plants. One hundred and seven taxa representing 51 genera were examined by mass spectrometry for their 13 C/ 12 C ratios in dried leaf tissue. Species possessing the high 13 C/ 12 C ratio typical of the Kranz syndrome were found in genera belonging to the following tribes: Heliantheae (subtribe Coreopsideae)— Chrysanthellum (4 spp.), Eryngiophyllum (1 sp.), Glossocardia (1 sp.), Glossogyne (1 sp.), Isostigma (5 spp.); Tageteae— Pectis (21 spp.); and Helenieae— Flaveria (4 spp.). The only genus to possess both C 3 and C 4 species was Flaveria in which all but four species appear to possess a C 3 ‐type metabolism. When appropriate, the phyletic input of these data is discussed.
Keywords
BiologyAsteraceaeHeliantheaePhyletic gradualismBotanyGenusTaxonPhylogeneticsGenetics
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Publication Info
- Year
- 1975
- Type
- article
- Volume
- 62
- Issue
- 5
- Pages
- 541-545
- Citations
- 64
- Access
- Closed
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Cite This
Bruce N. Smith,
B. L. Turner
(1975).
DISTRIBUTION OF KRANZ SYNDROME AMONG ASTERACEAE.
American Journal of Botany
, 62
(5)
, 541-545.
https://doi.org/10.1002/j.1537-2197.1975.tb14082.x
Identifiers
- DOI
- 10.1002/j.1537-2197.1975.tb14082.x