A Taxonomic Revision of Collinsonia (Lamiaceae) Based on Phenetic Analyses of Morphological Variation
Collinsonia (Lamiaceae) is a small genus restricted to eastern North America with four species commonly recognized: C. canadensis, C. serotina, C. tuberosa, and C. verticillata. Considerable taxonomic confusion exists within subgenus Collinsonia (all taxa except C. verticillata). Principal components and canonical variates analysis were performed on a macro-morphological dataset of 23 variables scored for 118 specimens of subgenus Collinsonia. Results from field and herbarium observations and from the phenetic analyses indicate that specimens of C. serotina with four stamens (hereafter referred to as C. anisata) represent a distinct species. Specimens of C. serotina with two stamens are intermediate between C. canadensis and C. anisata and are tentatively recognized as C. punctata; further study is needed to determine their origin and evolutionary status. Collinsonia tuberosa and C. canadensis show considerable phenetic overlap and are here merged under C. canadensis. Four species of Collinsonia are now recognized: C. anisata, C. canadensis, C. punctata, and C. verticillata.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Regular Paper
Publication date: 2006-04-01
More about this publication?
- Systematic Botany is the scientific journal of the American Society of Plant Taxonomists and publishes four issues per year.
2011 Impact Factor: 1.517
2011 ISI Journal Citation Reports® Rankings: 87/190 - Plant Sciences
34/45 - Evolutionary Biology
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Ingenta Connect is not responsible for the content or availability of external websites