14 



Australian Plants. 



fasciculatum R.Br., Scleranthus Mniarum Ferd. Mueller), the 

 only known species, and like this varying in the length of 

 the peduncles. By the constantly 5 -cleft calyx of this kind 

 Mniarum becomes so closely allied to Scleranthus, that hardly 

 any objection can be raised against the conjunction of the two 

 genera. 



PORTULACEAE. 



33. Mollugo Novo-Hollandica, 



Stems numerous, prostrate, dichotomous; leaves pseudo- 

 verticillate, unequal, spathulate-lanceolate, at the top indis- 

 tinctly serrulate, finally glabrescent, young ones together 

 with the branches wooly-pubescent ; flowers triandrous, 

 pseudo-verticillate ; sepals blunt, a little longer than the ovate 

 capsule, and about equal in length to the pedicel ; seeds reni- 

 form-ovate, shining brown, densely seriato-granulate. 



On the sandy sometimes inundated banks of the Murray. 



This presents the first Australian species of this genus, and 

 must be systematically placed next to Moll, hirta from the 

 Cape of Good Hope. 



EUPHORBIACE^. 



34. Phyllanthus trachyspermus. 



Annual, smooth, glaucous j stem upright, branched ; 

 branches angular ; leaves imbricate, deciduous, oblong, obtuse, 

 on very short petiols ; pedicels solitary, very short ; sepals 

 lanceolate -acute, much shorter than the capsule, with broad 

 membranaceous margin j stigmata very small ; capsula sub- 

 globose, smooth, drawn out into an umbonate apex; seeds 

 large, livid, acut, triangular, at the internal angul deeply 

 excavate, on the sides and back rugosely asperate. 



On places subject to inundations at the junction of the 

 rivers Darling and Murray. 



35. Phyllanthus lacunarius. 



Annual, smooth, glaucous ; stem upright, branched ; 

 branches angular ; leaves imbricate, deciduous, obovate- or 

 cuneate-oblong, obtuse, on short petiols ; flowers monoecious, 

 axillar, solitary, on short pedicels; sepals minute, subovate, 

 obtuse, with broad membranaceous margin ; stigmata very 

 short; capsule depressed, trigastrous; seeds trigonal, blackish, 

 with longitudinal streaks. 



On the margins of lagoons which become dry during sum- 

 mer, at the junction of the Murray and Darling rivers. 



