2 
acuta, basi sensim in petiolum brevissimum attenuata, inferiora ad 
2 (rarius 2:5) cm. longa, ad 6 mm. lata, caetera minora, pallide viridia, 
carnosula, magis minusve papilloso-asperula. Flores ? secundum 
ramos saepe a basi dispositi, sub anthesi circiter 2 mm. longi, virides. 
Pistillum antice papilloso-pilosulum. Fructus 4-5 mm. longi, 2 (vel 
superne fere 3 ) mm. diametro, viridi-olivacei, glabrati. Semen 2mm. 
longum.—Threlkeldia haloragoides, F. Muell. ex Benth. Fl. Austral. 
vol. v. p. 198. 
Soutn West AustraiA: In the interior, Drummond, 55, 438. 
This species was originally placed in Threlkeldia in Chenopodiaceae by 
but moved it back to Chenopodiaceae assigning it a place next to 
Threlkeldia in Chenoleae. Volckens in Engler and Prantl’s Natiirliche 
Pflanzenfamilien enumerates it at the end of Chenopodiaceae as a 
genus of doubtful affinity. In the writer’s opinion there can be no 
doubt that its affinity is with the Gyrostemoneae in Phytolaccaceae. 
It shares with them all the vegetative characters to a high degree 
and also the structure of the seed, apart from the extreme reduction 
of the aril. It appears, however, highly specialised in that it possesses 
only one carpel which develops into a peculiarly shaped hard nut. 
he rudimentary perianth is open on the side facing the supporting 
leaf, but is otherwise of the same nature as in the other Gyrostemoneae. 
e stout, cavernous and ultimately quite hollow style which is open 
upwards, and has a much divided fringed stigma, is very peculiar, 
but the stigmatic character finds its counterpart in Tersonia, although 
the somewhat fleshy or waxy divisions are less numerous and more 
regularly arranged in that genus. Although reduced to a single 
carpel, the gynaecium of Cypselocarpus shows traces of the symmetry 
of the carpels of its polymerous allies. The very light and yet hard- 
shelled smooth fruits seem to be equally well adapted for transport 
by wind (rolling) and by water —O. Starr. 
Fic. 1, diagram of flower; 2, young flower; 3, fully developed flower; 4, hairs 
of flower ; 5, longitudinal section of young flower ; itudinal section of older 
flower; 7, a 3-lo rianth ; 8, a 4-lobed perianth; 9, fruit; 10, longitudinal 
tion of fruit ; 11, seed; 12, transverse section of seed ; 13, longitudinal section 
of the same. All enlarged. 
