40 
C0L.0RAD0 Agricui^tural Cogr,e:ge 
Key to Species 
Bracts, enclosing- the fruit, 2.5-3 5 mm. long 1..A. hastata 
Bracts, enclosing the fruit, 5-7 mm. long 2.. A. semibaccata 
1, Halberd-leaved O r a c h e 
^Atriplex hastata L.) (Fig. 53). — 
Seeds, with enclosing bracts persist- 
ent, mahogany to black in color, 
rough, mealy ; seeds with bracts 
removed, 1-1.5 mm. across, flat, thin, 
slate-black in color, with one pro- 
tuberance, and a shallow groove 
which marks off the protuberance 
from the remainder of the seed. 
2. Australian Salt Bush {Atriplex semi- 
baccata) (Fig. 54). — Seeds, with enclosing 
bracts persistent, pinkish-buff to cinnamon-buff 
in color, rough ; seeds, with bracts removed, clay 
color; parts of the pericarp persist when the 
bracts are removed giving the seed a mealy, 
scurfy appearance ; groove less distinct than 
in A. hastata; seeds, with bracts, 5-7 mm. long, 
4-5 mm. wide in the widest part; seeds, without 
bracts or pericarp, 1.5 mm. across, flattened, 
thin. 
7. AMARANTH FAMILY 
(Ainaraiithaceae) 
Fruit a membranous 1-seeded utricle, ovoid or subglobose, 
circumscissile (dehiscing by a regular, transverse, circular line of 
division), bursting irregularly, or indehiscent; seeds mostly 
smooth and shiny; embryo annular; endosperm mealv. abundant. 
Amaranth 
(Amaranthus (Tourn.) L.) 
Fruit an ovoid 1-seeded utricle, 2-3 beaked (ending in a prolonged tip) 
at the apex ; calyx sometimes persistent ; fruits opening transversely or 
sometimes bursting irregularly usually indehiscent; seeds smooth shiny, 
oval to circular in outline, lenticular ; embryo coiled into a ring around the 
endosperm. 
Key to Specie.^ 
Seeds circular in outline or nearly .«o 
Seeds 1.2-1. 5 mm. across each face 1..A. blitoides 
Seeds .G-.7 mm. across each face 2.. A. graccizans 
Seeds broadly ovate to oval in outline 3.. A. rctroflexus 
Fig. 54. Australian 
5alt Bush (Atriplex 
semibaccata). A. Utricle. 
3. Bracts enclosing 
utr-icle. 5. 
Fig. 53. Halberd-leaved Orache 
(Atriplex hastata). A. Utricle. B. 
Bracts enclosing utricle, x 10. 
