FIGURE 3. Petiole and fruit anatomy. A in The rediscovery of Billburttia vaginoides, with notes on the morphology, anatomy, traditional uses and conservation status of the genus Billburttia (Apieae, Apiaceae)

FIGURE 3. Petiole and fruit anatomy. A. Billburttia capensoides (Rakotonandrasana & Ratrimosaona 1494, TAN, CNARP). B. B. vaginoides (Rakotonandrasana & Ratrimosaona 1495, TAN, CNARP). A1 and B1. Transverse sections of petiolules. A2 and B2. Transverse sections of petiolar bases; sc—small secretory canals in ground tissue, scp—small secretory canal in phloem. A3 and B3. Transverse sections of fruits. Black arrowheads mark the aggregates of acicular crystals. Scale bars: A1, A3, B1, B3 = 500 μm; A2, B2 = 200 μm.