35 MONOCOTYLEDONEÆ. LIMNOPHYTON- 
punetata, post anthesin patentia, revoluta. Petala (fid. Mueller) alba, 
ovato-lanceolata, unguiculata, breviter acuminata, circa 6 mill. longa. 
Stamina 6, 2 mill. longa; antherz late, ovatæ, utrinque emarginatæ, 
. supra basim intus affixæ, filamentis complanatis, tenerrimis brevio- 
res. Ovaria 6 late ovata, stylo gracili, apicali, deciduo, rostrata. Car- 
pella 2-6 irregulariter verticillata, ovato-reniformia, vix lateraliter 
compressa, endocarpio crasso, fere lignoso, dorso 4 costata, costis 
irregulariter tuberculatis; inter costas lineis resinosis notata. Semi- 
num testa tenuis, fere lævis. 
In loeis humidis 1° In Australia, Upper Victoria River; in paludibus 
prope Moreton Day; in vicinia sinus Carpentarie; ad flumen je 
(leg. Mueller, Bowmann in herb. Kew, etc.); 2» in India orientali : 
insula Zeylanica (Thwaites n. 2318), East Himalaya (Griffith n. ie 
Moradabad (Thompson n. 786, Wallieh n. 4996); 3* in Africa tropi- 
cali occidentali, Baikie's Niger Expedition (coll. Barter n. 1062 in 
herb. Kew 
6. A. acanthocarpum Mueller Fragm. phytog. Austral. 1, p. 23; 
Benth. fl. Austral. 7, p. 185. 
Species quammodo dubia, præcedenti valde affinis. Folia, scapi, 
flores omnino conformes; differt imprimis fructibus. Carpella 3-5 
irregulariter verticillata, 7-8 mill. longa, 4-5 mill. lata, crassa, ovato- 
reniformia, superne stylo deciduo mutica, endocarpio lignoso, dorso 3-5 
costata, costis spinosis, seepius spinæ 2 apicales, divaricato-patentes, 
conicæ; 2 dorsales breviores. De hac specie, seripsit Mueller (Fragm. 8, 
p. 214): « Transitus ab hac, ad antecedentem plantam nondum habeo, 
sed illi fortasse reperiendi et.tunc A. acanthocarpum præcedenti, 
jungendum erit. » 
Habitat in Australia, Lower Victoria river (Mueller), Pine-River 
(W. Hill), Rockingham Bay, Edgecombe Bay, etc. 
IL. LIMNOPHYTON Mig. Flora Ind. Bat. 1855, 3, p. 242. Dipseu- 
dochorion Buchen. Flora 1865, p. 241. Sagittaria obtusifolia Linn. 
Spec. ed. 1, p. 993. 
Flores 8 et g. Sepala 3, persistentia, post ou reflexa. Petala 
decidua. Præfloratio imbricata. Receptaculum planum. Stamina 6 peri- 
gyna, uniseriata, sepalo quoque duo opposita, in floribus 9 minora, 
tamen pollinifera; antheræ basifixæ, lateraliter dehiscentes, loculis 
conneetivo angusto adnatis; filamenta basi dilatata. Ovaria 15-20 in 
