FIGURE 3 in Foliar architecture of some members of the tribe Senecioneae (Asteraceae) with a key for identification of the Mexican genera

FIGURE 3. Orientation of intercostal venation in Senecioneae. A–M. Random reticulate, A, Barkleyanthus salicifolius; B, Nelsonianthus tapianus; C, Telanthophora grandifolia; D, Packera sanguisorbae; E, Pentacalia guerrerensis; F, Pippenalia delphinifolia; G, Pittocaulon praecox; H, Psacaliopsis paneroi; I, Psacalium purpusii; J, Robinsonecio gerberifolius; K, Senecio mulgediifolius; L, Telanthophora liebmanii; M, Tetradymia comosa. N, O, Opposite percurrent, Werneria nubigena. P–T, Regular polygonal reticulate, P, Digitacalia crypta; Q, Erechtites valerianifolia; R, Pseudogynoxys chenopodioides; S, Roldana candicans; T, Villasenoria orcuttii. Bar is 500 μm in A, M; 1 mm B–L, N–T.