PLATE XXXI.
BORBONIA CORDATA.
Heart-shape leaved Borbonia.
CLASS XVII. ORDER IV.
DIADELPHIA DECANDRIA. Threads in two sets. Ten Chives.
GENERIC CHARACTER.
Calyx. Perianthium monophyllum, quinquefidum, turbinatum, corolla dimidio brevius; laciniis lanceolatis, acuminatis, subæqualibus.
Corolla pentapetala papilionacea.
Vexillum reflexum, obtusum, ungue calycis longitudine.
Alæ semicordatæ, vexillo paulo breviores.
Carina dipetala, lunulata, obtusa.