Thymophylla genus --- ASTER SUBFAMILY 3.4

​Aster 3.1 (Genus A to F) -- Aster 3.2 (Genus G to O) -- Aster 3.3 (Genus P to R) -- Aster 3.4 (Genus S to Z)  

pricklyleaf dogweed (Thymophylla acerosa) -- in April -- Dripping Springs Natural Area, NM   

fiveneedle pricklyleaf (Thymophylla pentachaeta) -- in April -- Big Bend National Park, Texas