214 



WEEDS OF THE FARM AND GARDEN 



Rocky Mountains, California and Mexico. C. decora, 

 found in the southern states, has coarse stems, panicled, 

 papillose flowers, triangular calyx lobes, pointed capsule 

 and is seen on alfalfa. Flax dodder (C. epilinum) has 

 slender, reddish stems, flowers in loose clusters, linear 

 filiform stigmas and occurs rather sparingly on flax in 

 the northern states. 



Phlox Family (Polemoniaceae.) Herbs 

 with alternate, opposite leaves ; flowers 

 perfect, regular, clustered ; calyx bell- 

 shaped, five-cleft ; corolla gamopetalous, 

 the limb five-parted ; stamens five, inserted 

 on the tube of the corolla and alternate 

 with the lobes; pistil with a three-celled 

 ovary and a three-lobed style ; ovules two 

 to many; fruit a capsule, three-celled, 

 three-valved ; seed-coat sometimes muci- 

 laginous, producing spiricles ; embryo 

 straight; cotyledons flat. About 200 spe- 

 cies of wide distribution. 



Skunkweed, Pepperweed (Navarretia 

 squarrosa, H. and A.). A rigid, rather 

 stout annual, becoming much branched; 

 very glandular, viscid, fetid; leaves twice 

 pinnatifid or pinnately parted and the 

 divisions eith e r parted or incised, upper 

 arvensis) on red leaves and bracts spinescent ; flowers 

 clover. (Dewey- densely clustered; corolla blue, rarely 

 whitish, funnel form or almost salver form, 

 rather shorter than the usually entire calyx lobes ; 

 calyx lobe often laciniate or spinulose-tipped ; stamens 

 unequal in length, slender, tubular. Open ground, com- 

 mon dphroughout western California and in the foothills 

 extending into Oregon. 



Waterleaf Family (Hydrophyllaceac.) Mostly hirsute 

 herbs with alternate or rarely opposite leaves; flowers 



