2. Atriplex R˛sea L. Red Orache

Fig. 1698

Atriplex rosea L. Sp. Pl. Ed. 2, 1493. 1763.

Annual, pale green and very scurf}', stem erect or decumbent, usually much branched, 1°-2 /12° high. Leaves ovate or rhombic-ovate, short-petioled or the upper sessile, coarsely sinuate-dentate, obtuse or acute at the apex, narrowed or subtruncate at the base, 1/2'-3 1/2' long, 1/4'-3 1/2' wide, often turning red; flowers mostly in axillary capitate clusters, often dense, or some in few terminal spikes; fruiting bractlets broadly ovate or triangular-hastate, strongly veined, mealy-white, dry, about 3" broad, united only at their bases, their margins toothed or lacerate and sides tubercled.

In waste places and ballast, Nova Scotia to New York and New Jersey. Adventive from Europe. Aug.-Oct.

2 Atriplex R Sea L Red Orache 40

3. Atriplex ArgÚntea Nutt. Silvery Orache. Saltweed

Fig. 1699

Atriplex argentea Nutt. Gen. 1: 198. 1818.

Atriplex volutans A. Nelson, Bull. Torr. Club 25: 203. 1898.

Annual, pale, densely silvery-scurfy or becoming smooth, stem erect or ascending, bushy-branched, 6'-2o' high, angular. Leaves firm, triangular-hastate or rhombic-ovate, mostly acute at the apex, narrowed or subtruncate at the base, petioled or the upper sessile, entire or sparingly dentate, 1/2'-2' long, the basal lobes short; flowers in capitate axillary clusters, or the staminate in short dense spikes; fruiting bractlets suborbicular, rhombic or broader than high, 2"-4' wide, united nearly to their summits, the margins sharply toothed, the sides sometimes tubercled or crested; radicle of the embryo pointing downward.

In dry or saline soil, Minnesota to British Columbia, Missouri, Kansas, Colorado and Utah. June-Sept.

Atriplex expansa S. Wats., admitted into our first edition, is not definitely known within our area.

3 Atriplex Arg Ntea Nutt Silvery Orache Saltweed 41

4. Atriplex Arenaria Nutt. Sea-Beach Atriplex

Fig. 1700

Atriplex arenaria Nutt. Gen. 1: 198. 1818.

Annual, pale, densely silvery-scurfy; stem bushy-branched, 6'-18' high, the branches ascending or decumbent, angular, slender. Leaves oblong, entire, acute or obtuse and mucronulate at the apex, narrowed or rounded at the base, very short-petioled or sessile, 1/2'-1 1/2' long, 2 1/2"-10" wide, the midvein rather prominent, the lateral veins few and obscure; flowers in axillary clusters much shorter than the leaves; fruiting bractlets triangular wedge-shaped, broadest above, 2"-3" wide, united nearly to the several-toothed summits, their margins' entire, their sides reticulated, or sometimes crested or tubercled; radicle of the embryo pointing downward.

On sandy sea beaches, Massachusetts to Florida. July-Sept.

4 Atriplex Arenaria Nutt Sea Beach Atriplex 424 Atriplex Arenaria Nutt Sea Beach Atriplex 43

5. Atriplex Nuttallii S. Wats. Nuttall's Atriplex

Fig. 1701

A. Nuttallii S. Wats. Proc. Am. Acad. 9: 116. 1874.

A finely scurfy pale green shrub, 1°-2 1/2° tall, the branches erect or ascending, rather stiff, striate or terete, leafy, the bark nearly white. Leaves oblong, linear-oblong or oblanceolate, obtuse or subacute at the apex, narrowed at the base, sessile, entire, $-2' long, 2"-s" wide; flowers in terminal spikes and capitate clustered in the axils, often strictly dioecious; fruiting bractlets ovate or suborbicular, united to above the middle, 1 1/2"-2 1/2" broad, the margins toothed, the sides crested, tubercled or spiny.

In dry or saline soil, Manitoba to Saskatchewan, south to Nebraska, Colorado and Nevada. Aug.-Oct.

6. Atriplex CanÚscens (Pursh) James. Bushy Atriplex

Fig. 1702

Calligonum canescens Pursh, Fl. Am. Sept. 370.

1814. Atriplex canescens James, Trans. Am. Phil. Soc.

(II.) 2: 178. 1825.

A pale densely scurfy shrub, 1°-3° high, resembling the preceding species and with similar foliage. Flowers in short terminal spikes and in axillary clusters, commonly dioecious, sometimes monoecious; bractlets ovate in flower, united nearly to their summits; in fruit appen-daged by 4 broad thin distinct wings, which are 2"-4" broad at the middle and usually about twice as high, strongly reticulate-veined, not tubercled nor crested, toothed near their summits or entire.

In dry or saline soil. South Dakota to Kansas, Texas, New Mexico and Mexico, west to Oregon and California. Sage-brush. Cenizo. July-Sept.

6 Atriplex Can Scens Pursh James Bushy Atriplex 44