Morphological detail of Chengia laxispicata gen. et sp. nov.. (a) A node showing the opposite branching pattern and subtending elongate-linear leaf (arrows). (b) An internode showing the fine longitudinal striations. (c) Terminal female spikes with the loosely arranged bracts and prominent internodes. (d–e) The morphology of female reproductive units. Green arrows refer to an enveloped seed axillary to a bract. White arrows refer to a thin, hollow micropylar tube. (f–g) The camera lucida drawing of partial spikes in (e) and (d), showing the decussate and opposite fertile bracts.
Yang et al. BMC Evolutionary Biology 2013 13:72 doi:10.1186/1471-2148-13-72