462 FLORA OF TEXAS. 



OBIONE, Gsertn. 



Chiefly as Atriplex, both in character and habit ; bat 

 the two indurated bracts more or less united, often toothed 

 on the edges and crested on the sides, and the radicle su- 

 perior. 



0. AREN'ARIA, Moquin. Plant coated with silvery scales; 

 stem branching from the base, ascending; lowest leaves op- 

 posite, obovate, entire, tapering into a petiole, the others 

 alternate, nearly sessile, lanceolate or oblong, acute, wavy 

 and slightly toothed; sterile floioers in close terminal 

 spikes; the fertile ones in axillary clusters; bracts 

 3-toothed at the summit, and with two mostly toothed 

 knobs at the sides. (Atriplex arenaria, Nutt.) Drifting 

 sands along the coast. July- September. Annual. Stem 

 l°-2° high; leaves I'-lf long. 



O. CANESCEN^s. On the Ked Eiver. — Marcy, 



SALICOENIA, Tourn. Samphire. 



Flowers perfect, lodged in excavations of the thickened 

 upper joints of the stem, spiked ; calyx thin, w4th a den- 

 ticulate border, at length spongy, and surrounded at the 

 apex by a circular wing ; stamens 1-2 ; styles united be- 

 low; utricle included in the calyx; embryo coiled, or bent 

 into a ring. — Smooth and succulent saline 2^l(iJits, with 

 jointed leafless stems ; flowers three together, the lateral 

 ones sometimes sterile, minute. 



S. herbacea, L. Annual; s^em erect, much branched; 

 the joints thickened upward, obtusely 2-toothed at the 

 apex ; sinkes long, tapering to the summit. — Salt marshes 

 along the coast, Georgia, and northward. August. Stem 

 6'-12' high. 



CHENOPODINA, Moquin. 

 Flozvers perfect, bracted; calyx 5-parted, fleshy, inflated 



