Figure 2

Siphonospermum simplex gen. et sp. nov. Details of (a, c): specimen 9880A; (b, d): specimen 9880B. (a) Reproductive units of Siphonospermum simplex. (b) Close up of the reproductive unit seen in Figure 1b. (c-d) Node and linear leaf with parallel first order venation. Arrows 1: micropylar tube formed by the integument; 2: second (mostly sclerenchymatous) layer; 3: third (probably mostly parenchymatous) layer; 4: the ovule has been detached and slightly displaced; 5: supportive strands of the (inner) seed envelope. Scale bars: 1 mm.