FIGURE 1 in Systematic significance of cypselae in the Calea teucriifolia complex

FIGURE 1. Scanning Electron Microscopy (SEM) of Calea cypselae. a, e, j. C. ferruginea, b, f, i, k. C. microphylla, c, g. C. teucriifolia, d, h, l. C. villosa. a–h. General view. i. Detail of the apex. Note typical biseriate trichomes. j. Detail of median region. Note the reduced biseriate trichomes. k. Detail of pappus. l. Cypsela base showing the carpopodium. Arrowhead: biseriate tector trichomes. ca: carpopodium. pa: pappus.