Galinsoga parviflora var. semicalva A. Gray
Family: Asteraceae
Galinsoga parviflora var. semicalva image
Patrick Alexander  
Plants 4-35 cm. Leaf blades lance-olate to ovate, 7-55(-80) × 3-20 mm, margins usually entire or serrulate, sometimes serrate. Arrays of heads congested. Axillary peduncles shorter than subtending bractlets. 2n = 32. Flowering summer-fall. Rocky slopes; 1800-2700 m; Ariz., N. Mex., Tex.; Mexico. Plants of var. semicalva are less branched and usually have narrower leaves and shorter axillary peduncles than those of var. parviflora. They are found above 1500 m as far south as Distrito Federal, Mexico. Morphologic intermediates between the diploid var. parviflora and the tetraploid var. semicalva occur throughout the range of var. semicalva.

Galinsoga parviflora var. semicalva image
Patrick Alexander  
Galinsoga parviflora var. semicalva image
Patrick Alexander  
Galinsoga parviflora var. semicalva image
Patrick Alexander  
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image
Galinsoga parviflora var. semicalva image