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Alvordia
''Alvordia'' is a genus of flowering plants in the family Asteraceae. It includes 4 species of shrubs which occur in the states of Baja California and Sonora, Mexico. The genus is characterized by having a secondary clustering of heads into compound units, so that what appears to be a single head is actually a group of heads packed together. The genus is classified as a member of subtribe Helianthinae, the same subtribe that contains the common sunflower (''Helianthus''). Based on the reported chromosome counts, ''Alvordia'' includes both diploid and polyploid species, but the relationships among these have not yet been studied in detail. No chromosome count has yet been reported for the species ''A. congesta'' from Sonora, which was a later transfer to the genus.Turner, B. L. 1988. Reduction of the Mexican genus ''Agiabampoa'' to ''Alvordia'' (Asteraceae, Heliantheae). Phytologia 64: 209-210. The genus is endemic to northwestern Mexico, known from the 3 states of Sonora, Baja Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvordia Brandegeei
''Alvordia'' is a genus of flowering plants in the family Asteraceae. It includes 4 species of shrubs which occur in the states of Baja California and Sonora, Mexico. The genus is characterized by having a secondary clustering of heads into compound units, so that what appears to be a single head is actually a group of heads packed together. The genus is classified as a member of subtribe Helianthinae, the same subtribe that contains the common sunflower (''Helianthus''). Based on the reported chromosome counts, ''Alvordia'' includes both diploid and polyploid species, but the relationships among these have not yet been studied in detail. No chromosome count has yet been reported for the species ''A. congesta'' from Sonora, which was a later transfer to the genus.Turner, B. L. 1988. Reduction of the Mexican genus ''Agiabampoa'' to ''Alvordia'' (Asteraceae, Heliantheae). Phytologia 64: 209-210. The genus is endemic to northwestern Mexico, known from the 3 states of Sonora, Baja Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |