FIG. 3. — Anatomy of tubular flowers in Flourensia DC.: A-G, F. campestris Griseb.; H, F. hirta S.F. Blake; A, B, E, F, longitudinal sections; C, D, G, H, transversal sections; A, capitulum with two tubular flowers; B, ovary with one anatropous ovule; C, ovary showing two dorsal bundles and paleae; D, detail of ovary wall in the carpel fusing region; E, mature ovule with embryo sac; F, detail of outer epidermis of E with twin trichomes and hypodermis; G, H, glandular trichomes. Abbreviations: a, awn; c, corolla; ca, carpopodium; db, dorsal bundle; e, endothelium; gt, glandular trichome; h, hypodermis; ie, inner epidermis; im, inner mesophyll; int, integument; mb, marginal bundle; n, nectary; o, ovule; oe, outer epidermis; om, outer mesophyll; p, paleae; ph, phyllary; st, style; tt, twin trichome. *, secretory duct. Scale bars: A, 200 µm; B-C, E, 100 µm; D, F-H, 50 µm.

Published as part of Delbón, Natalia, Cosa, María Teresa & Bernardello, Gabriel, 2017, Reproductive biology, seed germination and regeneration of Flourensia DC. species endemic to Central Argentina (Asteraceae), pp. 71-85 in Adansonia 39 (1) on page 75, DOI: 10.5252/a2017n1a6, http://zenodo.org/record/4599061