i8o 
A TRIPLEX 
Annual, very mealy, white to silvery. Stem rather stout, decumbent, much branched ; branches 
up to 2 dm. long, ascending; pale yellowish to reddish, with reddish flakes. Petioles short (2 — 5 mm.). 
Laminae broadly rhomboid-ovate, more or less cuneate at the base, margin sinuate-dentate with 
sinuses shallow and entire to subentire, lobes absent or rudimentary, obtuse at the apex, rather 
thick, silvery, very mealy on both surfaces, usually about 2 cm. long and 1*5 broad. Inflorescences 
axillary, much shorter than the leaves, about 3 — 5 mm. long. Flowers mostly staminate, about 
2 — 6 in each cluster ; August and September. Fruiting bracteoles rhiomboidal, usually broader 
than long, about 7 mm. long and 8 broad, sharply contracted or subcordate at the base, lateral 
angles truncate, smooth or tuberculate, silvery, mealy. Seeds brown, dull ; radicle prominent ; 
September and October. 
Sandy and shingly foreshores, and margins of salt-marshes, at the limit of the high spring- 
tides. From the Channel Isles, Cornwall, and Kent to Zetland. Not recorded for Ireland. 
A. sabulosa occurs in Sweden (not indigenous), Denmark, Germany (shores of the Baltic Sea), 
Belgium, northern shores of France. 
Subgenus 2. OB I ONE 
Obione [Gaertner De Fruct. ii, 198, t. 126, fig. 5 (1791) as a genus] C. A. Meyer in Ft. Altaica iv, 315 
(1833) as a section, including sect. Halimus ; Syme Eng. Bot. viii, 36 (1868); Volkens in Engler und Prantl 
Pflanzenfam. iii, pt. i a, 66 (1893); Halimus Wallroth Sclied. Crit. 117 (1822) as a genus; Reichenbach Ft. Germ. 
Excurs. 576 (1830) as a genus. 
For characters, see page 168. 
British species of Obione 
8. A. portulacoides (see below). Undershrub or dwarf undershrub. Lower leaves opposite, 
gradually narrowed at the base into a rather long petiole, somewhat narrowed towards the apex. 
Fruiting bracteoles sessile or nearly so, middle lobe conspicuous, not much exceeded in length by 
the lateral lobes. 
9. A. pedunculata (p. 182). Annual herb. Leaves alternate, abruptly contracted at the 
base into a short petiole. Fruiting bracteoles on long pedicels, middle lobe small, much exceeded 
by the lateral lobes. 
8. ATRIPLEX PORTULACOIDES. Sea Purslane. Plate 187 
Halimus vulgaris sen portidaca marina Johnson in Gerard Herb. ed. 2, 523 (1636); A. maritima fruticosa 
halimus et portulaca marina dicta angustifolia Ray Syn. ed. 3, 1 53 (1724). 
Atriplex portulacoides L. Sp. PI. 1053 (1753); Syme Eng. Bot. viii, 36 (1868); Halimus portulacoides 
Du Mortier FI. Belg. 20 (182 7) nomen; Nees in Flora xviii, 359 (1835); Obione poi'tida,co'ides Moquin Monogr. 
Chenop. 75 (1840); Rouy FI. France xii, 37 (1910). 
leones: — Smith Eng. Bot. t. 261; FI. Dan. t. 1889; Beck in Reichenbach Icon, xxiv, 271, as Obione 
portulacoides. 
Camb. Brit. FI. ii. Plate 18 7. (a) Flowering shoot. ( b ) Staminate flowers (enlarged). Devonshire (E. M. H.). 
Exsiccata : — Billot, 1058, et 1058 bis, as Obione portulacoides ; Bourgeau {PI. d’Esp.), 1454; Fries, xiv, 61, 
as Halimus portulacoides ; v. Heurck, ii, 86, as Halimus portulacoides ; Schultz, 2579, as Obione portulacoides ; 
Thielens et Devos, iii, 271, as Halimus portidaco'ides ; Todaro, 515; Wirtgen, 39 7, as Halimus portulacoides. 
The specimens by Todaro belong to the small narrow-leaved form ( Halimus australis Nees in Flora xviii, 359 (1835)). 
Undershrub, up to 6 dm. high, or dwarf undershrub, very mealy. Rhizome short, creeping, 
much branched. Stem decumbent, much branched ; branches ascending, terete below, angular 
above. Leaves opposite below, opposite or alternate above. Petioles short, about 5 — 10 mm. long. 
Laminae of the lower leaves elliptical, attenuate below, entire, lobes absent, apex rounded or apiculate ; 
of the upper ones linear ; mealy above, strongly so underneath. Inflorescence of terminal and 
axillary compound spikes ; partial inflorescences interrupted below, a leaf at the base of each. 
Flowers either perfect, or with functional stamens and a rudimentary ovary, or with functional 
