Drummondiane. N. O. Juncaginee. 
TAB. DCCXXXI. 
TRIGLOCHIN CALCITRAPA. Hook. 
Nanum, cespitosum, annuum, foliis brevibus lineari-setaceis 
basi membranaceo-dilatatis, capsulis linearibus 3-locularibus 
basi in spinas longas 6 didymas horizontales productis, loculis 
dorso rotundatis, sepalis ovatis acuminatis. 
Has, Swan River, Western Australia. Mr. James Drummond. 
m. 17, 1845. 
At our Tas. DCcxxviil, is figured a small annual species 
of Triglochin with winged fruit, and that fruit, at the 
base, produced into six short spines. In the present in- 
stance, besides a different shape of fruit (the cells being 
destitute of wings and rounded at the back), the base is pro- 
longed into six very long horizontal spines, placed in pairs, 
giving the fruit a miniature resemblance to that instrument of 
war, the Caltrops, whence is derived the specific name. 
Fig. 1. Flower. f. 2, Immature fruit or ovary. jf. 3. Fruit. 
J. 4. Vertical section of the same, f. 5. Transverse section of 
the ovary :—magnified. 
