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Colorado Agricultural College 
Hairy Germander (Tcucrium occidentale 
A. Gray) (Fig. 123). — Seeds chestnut-brown 
to honey-yellow in color, circular in outline 
or nearly so, one side rounded, the other flat 
or concave and almost entirely occupied by 
a rounded scar ; with the exception of the 
scar-like area, the seed is marked with a 
network of ridges. 
^ 28. POTATO FAMILY, NIGHTSHADE FAMILY 
(Solanaceae) 
Fruit a many-seeded berry or capsule ; seeds numerous, flat- 
tened, with rounded projections, pitted or roughened, often hard 
and brittle, so curved as to bring the apex and base nearly together ; 
endosperm abundant and fleshy; embryo curved or spirally coiled, 
circular in cross-section. 
1. Nightshade, Bittersweet, Horse Nettie 
{Solanum {Tourn.) L.) 
Fruit a berry, mostly spherical in shape; seeds numerous, flattened. 
Fig. 123. Hairy Ger- 
mander (Teucrium occi- 
dentale). A. Bottom 
view. B. Top view, x 11. 
Key to Species 
Seeds smooth or nearly so 
Seeds 1.5-2. 5 mm. long 
Seeds 1-1.5 mm. long 
Seeds pitted and rough 
1..S. triflorum 
2 . .S. nigrum 
Z. .8. rostratum 
1. Three-flowered or Cut-leaved 
Nightshade (Solanufn triflorum Nutt.) 
(Fig. 124). — Seeds buff-yellow to buck- 
thorn-brown in color, flattened, oval in 
outline, 1.5-2. 5 mm. long, 1.3-1.7 mm. wide; 
seeds appear faintly pitted when exam- 
ined with a hand lens. 
Fig. 124. Three- 
flowered Night- 
shade (Solanum 
triliorum). Ton 
view (left), edge 
view (right), x 14. 
Fig. 125. Black 
Nightshade (Sol- 
anum nigrum). 
Top view (left), 
edge view (right). 
X 12. 
2. Black or Common Nightshade 
(Solanum nigrum L.) (Fig. 125). — Seeds 
black to clay color, flattened, oval or 
nearly circular in outline, 1-1.5 mm. long, 
.8-1 mm. wide; seeds appear pitted as in 
Solanum triflorum. 
