Colorado VVked Skkds 
Seeds not marked with a large cir- 
cular scar; seeds yellow, dull, 
granular, rounded on one side, 
(Cuscuta) 
D. Seeds not circular in outline 
E. Seeds reniform in shape 
Seeds only slightly flattened 
’"^15 • ■ ROSACE AE (Potentilla 
Seeds not marked with fine branching monspeliensis) 
ridges 
®**"paSlTosf rMgrs . .CARTOPI^LEACEAB 
^ ^ (Silene, Lychnis) 
Seeds'^mstin^Hy fattened (Medicago, Psoralea) 
Pd with fine papillose lines or 
10 ..CARYOPHYLLACEAE 
(Saponaria) 
E. Seeds not reniform in shape 
F. Seeds cordate in shape 
Seeds rough, black, marked with dis- 
, (Agrostemma) 
®1"unVaL”lfcVor 20.. MALVACEAE (Abutilon) 
Seeds not dull-black in color 
Seeds yellow in color, shiny, .8-1 -.p t 
mm. long 10..FABACEAE (Tr.fohum 
Seeds grape-green to buff-brown procumbens) 
in color, dull, 1.5-2. 3 mm. . 
16. .FABACEAE (Melilotus) 
F. Seeds not cordate in shape 
G. Seeds ovate in shape or nearly so 
*Seeds flattened on two sides 
Seeds with one rounded side and 
two flat sides meeting in a 
27. .LABIATAE (Prunella) 
Seeds without a rounded side and 
two flat sides meeting in a 
ridg*G 
Seeds shiny black 7. . AMARANTHACEAE 
Seeds not shiny black (Amaranthus) 
Seeds dull black 
Seeds deeply pitted, wrink- 
led margins irregular. 28. .SOLANACBAE (Solanum 
seeds not deeply pitted rostratum) / 
Seeds with a minute 
white scar at the 
hilum. seeds marked 
with concentric rows 
of fine projections... 8. .PORTULACACl^E 
(Portulaca)^ 
/ 
