357 



Much confusion has been caused in this difficult tribe by 

 the description of specimens which had only reached the 

 flowering stage. To prevent an increase of this confusion in 

 the future it would seem desirable that botanists should refrain 

 from naming new species unless they are in a position to 

 describe the fruiting perianth, the pericarp, and the ripe seed. 



The first serious work in this tribe was done by Moquin 

 in his Chenopodearum monographica enumeratio, 108-116 

 (1840), and later on by the same author in DC. Prodromus, 

 xiii., ii., 144-152 (1849). Bentham dealt with the Australian 

 species in Fl. Aust. v., 201-205 (1870), and J. D. Hooker, in 

 Benth. et Hook. Gen. pi. iii., 65 (1883), stablished two new 

 Australian genera : — Pachycornia and Tecticornia. Dr. Ove 

 Paulsen determined the Chenopodiaceae brought from Western 

 Australia by Dr. Ostenfeld (C. H. Ostenfeld, Contributions to 

 West Australian Botany, part 2, Dansk Botanisk Arkiv, ii., 

 No. 8, 56-66, ann. 1918) with several illustrations. Two 

 monographs by Ungern- Sternberg (Versuch einer Systematik 

 der Tribus Salicornieae, ann. 1866; Salicorniearum Synopsis 

 in Atti del Congresso internaz. botan. in Firenze, 259-343, 

 ann. 1876) are not accessible here. 



The specimens from the localities named below have all 

 been examined by me. 



I have to thank the Government Botanists of Victoria 

 (Prof. A. J. Ewart), N. S. Wales (Mr. J. H. Maiden), Queens- 

 land (Mr. C. T. White), and South Australia (Prof. T. G. B. 

 Osborn) for permitting me to examine many valuable 

 specimens from the National Herbaria. 



Fertile articles slightly lobed at summit or 

 almost entire. 

 Seeds with copious albumen. 



Fruit free and usually falling off with 



the perianth 1. Arthrocnemum 



Fruit embedded in the enlarged, bony 



axis 2. Pachycornia 



Seeds without albumen 3. Salicornia 



Fertile articles divided to the base into 2 



spreading segments or scales 4. Tecticornia 



1. Arthrocnemum, Moq. 

 Section 1. Trachysperma. Pericarp mem- 

 branous; seed compressed; seed-coats 2, 

 distinct, the cuter crustaceous and bear- 

 ing granules arranged in more or less 

 conceatric rows, the inner coat mem- 

 branous. 

 Perianth spongy, without distinct lobes ; 



pericarp hyaline, inconspicuous ... 1. A. halocnemoides 

 Perianth herbaceous, with 3 broad lobes ; 

 pericarp hardened at summit and con- 

 spicuous 2. A. Lylei 



