PORTULACEJE, AND THEIR ALLIES. 75 
The three remaining genera— S?/vea, said to consist of four species 
(of which I have only seen and examined one), and Monocosmia and 
Calyptridiwn, both monotypic—agree in their very small monan- 
drous flowers ; but evident differences in their inflorescence and 
sepals, and alleged ones in their corollas, which, on account of 
their extreme tenuity and rapid fading, I am unable to verify with 
certainty in dried specimens, have induced me to maintain them 
as distinct. 
Baitaria, Ruiz et Pav., is one of the dwarf alpine species of 
Calandrinia, of which the bracts have been described as outer 
sepals. Diazia, Philippi, described and figured from a single very 
imperfect specimen, is probably also a species of Calandrinia with 
the stamens very much reduced in number. At any rate, should 
it hereafter prove distinct, the name must be altered, as too closely 
resembling Diasia, an Irideous genus. 
Fouquiera, H. B. et K. (including Bronnia, H. B. et K.), con- 
nected by some authors with Portulacee, by others with Polemo- 
niacee, is perhaps more nearly related to some of the Calyciflorous 
groups connected with Saxifragaces, which we reserve for future 
consideration. 
III. MOLLUGINEE. 
This small group, whether considered as a tribe of Phytolaccaces 
or as an allied order, ought, in our opinion, to be limited to the 
following seven genera:—1. Macarthuria, Endl.; 2. Telephium, 
Linn.; 3. Orygia, Forsk. (Axonotechium, Fenzl); 4. P Glinus, 
Linn. ; 5. Mollugo, Linn. ; 6. Pharnaceum, Linn. (Ginginsia, DC. ; 
Hyperteles, E. Mey.) ; 7. Carlanthium, E. Mey. In the four first 
genera petals are occasionally, or, in two or three species, always 
present ; the three others, forming the great proportion of the tribe 
or order, are always apetalous. The total number of species is, 
however, not above 40. 
Macarthuria was originally referred to the vicinity of Buettne- 
riacee, but upon what grounds it is very difficult to imagine ; the 
very imbricate sepals, the insertion of the stamens, the habit, &e., 
being so totally at variance with all the Malvoid orders. Harvey 
first pointed out (Kew Journ. Bot. vii. 55) its affinity with Phy- 
tolaccaceæ, and F. Müller has, I believe (although I am .unable 
now to find a reference to his note), referred it to Molluginee. 
One species has always petals, another is quite apetalous ; the 
ovary, styles, capsule, and seeds are quite those of Molluginez. 
The stamens appear to be always 8 in an otherwise pentamerous 
