62 



Dansk Botanisk Arkiv, Bd. 2. Nr. 8. 



Ripe spikes nearly sessile, 1—3 cm long, 0.5—0.7 cm thick, blunt, 

 cylindric or tapering upwards, with oblique depressed rings and 

 no acuminate points. When the spike is broken, the fruiting 



perianth remains 

 with the article be- 

 low it. Flowers in 

 threes, wholly im- 

 mersed, perianth 

 flattened above, 

 without indenta- 

 tions. Ripe peri- 

 carp hard and 

 brown, compressed, 

 seen from the side 

 broadly ovate (Fig. 

 24 e); style wither- 

 ing, not persistent. 

 Radicle below, al- 

 bumen lateral. 



This species 

 has been identified 

 from Bentham's 

 description only. It 

 is, if rightly understood, nearly related to A. indicum (Willd.) 

 Moq. (PL V, fig. 3). Of the last-named species we have in Copen- 

 hagen specimens collected by Rottler on the plains at Tranque- 

 bar and thus properly identical with those seen by Willdenow. 

 They differ in the shape of the ripe fruit. In A. indicum, the 

 style is persistent like the rest, and placed obliquely (see Fig. 24, /), 

 and the pericarp is obovate. As stated by Ungern-Sternberg 

 (Versuch einer Systematik d. Tribus Salicornieae, Diss. Dorpat 

 1866, p. 70), the pericarp is easily Assuring in the sagittal plane. 

 Were it not for these differences, the two species would seem to 

 be identical. A study of a larger material, however, might per- 

 haps reveal other differences. 



Port Hedland (No. 1144 bis, 3. Nov. 1914). 



Fig. 24. a — d, Arthrocnemum Benthami. a, 3 fruiting 

 perianths, the one on the right hand lacks ovary. 

 b, outline of ripe fruit, c — d, seeds (emb., embryo, 

 alb., albumen), e, outline of fruit of A. leiostachy urn. 

 f, same of A. indicum. About 10 /i. 



22. A. Benthami n. sp. (PL VI, fig. 2). 



Fruticosum erectum carnosum ramis oppositis internodiis 

 superne vix dilatatis margine scarioso bifido lobis acutiusculis. 

 Spicæ 0.8 — 2 cm longæ maturæ 0.4 — 0.5 cm crassæ breviter vel 

 longiuscule pedunculatæ 8 — 12 articulatæ, articulis brevibus in 



