ffalopeplis.] cvii. chenopodiace^e (baker and clarke). 85 



irile Xiand. Nubia : coast region. Bent ! 



Also in North-east Africa and Arabia. 



The Mediterranean H. amplexicaulis resembles altogether the young examples of 

 H. perfoliata, but appears never more than annual, and is maintained as a distinct 

 species by Boissier. 



6. HALOCNEMUM, M. Bieb. ; Benth. et Hook, f . 



Gen. PI. iii. 64. 



Flowers very small, 2-sexual. Perianth of 3 unequal obovate seg- 

 ments united below. Stamen 1. Ovary ovoid, narrowed upwards; 

 style short, branches 2, sometimes 3 ; ovule 1, suspended on a basal 

 funicle. Seed vertical ; embryo peripheric round the albumen. — A 

 small shrub; stem continuous, the branchlets and spikes apparently 

 articulated. Leaves 0. Bracts in small spikes, with usually 3 flowers 

 under each. 



Species 1, also in Europe, North Africa, the Orient and Central Asia, 



1. H. strobilaceum, M. Bieb. FL Taur. Cauc. iii. 3. A woody 

 much-branched nearly glabrous shrub, 12-18 in. high. — Moquin in 

 DC. Prodr. xiii. ii. 149 ; Boiss. Fl. Orient, iv. 936 ; Volk. in Engl. & 

 Prantl, Pflanzenfam. iii. lA, 76, fig. 35 A-G. Salicornia strohilacea^ 

 Pallas, Voy. i. 744, t. 23, fig. 1, 2. 



xrile Xiand. Eritrea : Massowa, Schiveinfurth Sf Riva, 75 ! 



7. ARTHROCNEMUM, Moquin ; Benth. et Hook. f. 

 Gen. PI. iii. 65. 



Flowers very smull, 2-sexual. Perianth funnel-shaped, shortly 

 3-4-lobed. Stamens 2-1. Ovary ovoid ; style short, branches 2 ; ovule 

 1, suspended on a basal funicle. Seed vertical ; embryo peripheric round 

 the albumen. — Small shrubs ; stem branched, of short joints. Leaves 0. 

 Flowers in cylindric dense spikes ; in clusters of 3 sunk in the hollows 

 of the joints. 



Species 7, in saline marshes of the Old World. 



The seed is very much like that of Ficoidece or small Caryophyllacea. From the 

 " eye " lines of longitudinal cells radiate ; as these approach the round back of the 

 seed the cells shorten, so that the curved back of the seed is covered by subquadran- 

 gular cells, usually inflated ; this inflation is sometimes sufficient to make the seed 

 subpapillose on the back. The degree to which these markings are to be seen in the 

 fully ripe seed varies considerably in those examined from one plant. Volkens* 

 picture in Engl. & Prantl, Pflanzenfam. iii. lA, fig. 35, M, is a very rough imperfect 

 vievir of an average seed through a pocket lens. The characters of the seed have been 

 much used in distinguishing the species of this genus, but in my opinion are of little 

 value. 



Stems erect. 



Fruiting spikes l|-2^ in. long, 2 lin. broad . . 1. A. frxiticosum. 

 Fruiting spikes ^ to 1^ in. long, 2^ lin. broad , 2. A. macrostachyum. 

 Stems prostrate Z, A. indicum. 



