CHENOPODIACEAE 387 
B. Perennial. : 
Fruiting bracts spongy, wingless. 
Fruiting bracts 8-12 mm. long, the faces tubercled : leaves alternate ; blades 
about 1 cm. long. 5. A. acanthocarpa. 
Fruiting bracts 2 mm. broad, the faces not tubercled : leaves opposite ; blades 
less than 1 em. long. 6. A. oppositifolia. 
Fruiting bracts indurated, winged. 7. A. canescens. 
l. Atriplex hastata L. Annual, somewhat scurfy or glabrate, the foliage light green 
or purplish. Stems erect or ascending, 3-8 dm. long, more or less branched, the branches 
often spreading : leaf-blades triangular in outline, triangular-hastate or hastate-lanceolate 
above, 2-8 cm. long, acute or acuminate, entire or sparingly toothed, broadly cuneate, 
truncate or subcordate at the base, the basal lobes spreading ; petioles much shorter than the 
blades: flower-clusters commonly separated: mature bracts ovate or triangular, 4-5 mm. 
long, toothed, the faces spiny. 
In salt meadows and waste places mostly near the coast, New Brunswick to South Carolina. 
Summer and fall. 
2. Atriplex arenaria Nutt. Annual, pale or silvery with more or less dense scurf. 
Stems widely branched, often from the base, 1-5 dm. long, the branches spreading or 
prostrate : leaf-blades oblong to oval, 1-4 cm. long, acute or mucronate, somewhat crisped, 
entire, short-petioled or sessile : mature bracts united to above the middle, 3-5 mm. broad, 
fan-shaped, 3-toothed at the top, the faces tuberculate or spiny. 
On sea beaches, Nova Scotia (?) to Florida and Alabama. Summer and fall. 
3. Atriplex tuberculàta (Torr.) Coulter. Annual, scurfy-pubescent. Stems erect or 
ascending, 1-5 dm. tall, more or less branched: leaf-blades oblong-spatulate or oblong- 
oblanceolate, 1.5-2 cm. long, acute, entire or unevenly repand-dentate, narrowed into short 
petioles : flower-clusters inconspicuous: styles exserted : mature bracts broadly cuneate, 
2.5-3 mm. long, united at the base, with coarse equal triangular teeth, the faces reticulated 
and crested with 2 rows of acute tubercles. 
On hillsides, Texas. Spring and summer. 
4. Atriplex cristata H.B.K. Annual, green, but more or less scurfy. Stems erect 
or ascending, 3-6 dm. tall, rather diffusely branched, the branches ridged : leaf-blades oblong 
or nearly so, 1.5-3 cm. long, acute or cuspidate, undulate or finely serrate-dentate or 
repand, short-petioled : flower-clusters continuous or often interrupted : styles included : 
mature bracts 2-3 mm. broad, spiny toothed, the middle tooth longest, the faces with 2-4 
tubercles. 
On sandy coasts, Florida. Spring to fall. 
5. Atriplex acanthocárpa (Torr.) S. Wats. Perennial, appressed-scurfy. Stems 
erect, 3-7 dm. tall, branched, woody especially below: leaves alternate ; blades oblong to 
oblong-lanceolate or almost ovate, commonly somewhat hastate, 1-4 cm. long, acutish, 
entire or sinuate, cuneately narrowed, short-petioled : flowers dioecious ; staminate in dense 
interrupted spikes or panicles ; pistillate fewer in axillary clusters: mature bracts 8-12 
mm. long, united to the linear apex, spongy, the edges toothed, the faces appendaged with 
flattened tubercles. 
In dry soil, Texas and adjacent Mexico. Summer and fall. 
6. Atriplex oppositifdlia S. Wats. Perennial, somewhat scurfy. Stems erect, 1-4 
dm. tall, woody below, branched at the base and above : leaves mostly opposite ; blades 
thick, oblong or oblong-lanceolate, 2-4 mm. long, about equalling the nodes or surpassing 
them, acute, broadest at the base, sessile: flowers axillary : mature bracts suborbicular, 
2 mm. broad, radiately toothed, the faces 3-nerved, not appendaged. 
In dry soil, Texas and adjacent Mexico. Summer and fall. 
7. Atriplex canéscens (Pursh) James. Perennial, scurfy-pubescent. Stems erect 
or spreading, 2-6 dm. long, often copiously branched : leaf-blades oblong or oblanceolate 
to linear-oblong, 1.5-5 cm. long, acute or slightly apiculate, entire, narrowed to the sessile 
or nearly sessile hase: flower-clusters axillary or in naked often interrupted spikes, monoe- 
cious or dioecious : mature bracts united to the apex, indurated, slightly flattened: wings 
4-8 mm. in diameter : seed 2 mm. long or nearly so. 
On prairies and hillsides, South Dakota to Nebraska, Texas and California. Spring and fall. 
4. CORISPÉRMUM L. 
Annual caulescent herbs, with glabrous or pubescent foliage. Stems more or less 
diffusely branched. Leaves alternate: blades narrow, entire, sessile. Flowers perfect, 
solitary in the axils of leaf-like bracts, without bractlets. Sepal 1, or sepals 2-3, unequal, 
Searious. Stamens 1-3, or rarely 5, hypogynous, one longer than the rest: filaments 
