North American Species of Amaranthus. 319 
+ + Urtricle rugose, coriaceous. 
27. A. VIRIDIS. L.* Sp, Pl. Ed. H. 1408, 1762. 
Leaves rather smaller and more acute than in the preced- 
ing: inflorescence in slender flexuous spikes, the terminal 
longest, with several shorter ones crowded near its base. 
Stem weak, flexuous, prostrate: leaves small. 
+ Utricle smooth, leaves deeply emarginate. 
28. A. EMARGINATUS Salzm. ex Mog. |. c. 274. 
Euxolus viridis var. polygonoides Mog. DC. Prodr. 13%: 274. 1849. 
A, viridis, Index Kewensis |: 100, 1893. 
+ + Utricle rugose: sepals 5: leaves crisped. 
29. <A. CRISPUS Braun. Gray’s Manual 6th Ed. 428. 
+ + Utricle fleshy, prominently 3 to 5-nerved, much ex- 
ceeding the 2 or 3 sepals. 
30. A. DEFLExUS L. Mant. 2: 295. 1767. 
easily distinguished from A. crispus by the above characters and 
eareer oblong seed, and short thick terminal spi es. 
ative habitat said to be southern Europe. It is reported from 
"The names /ividus and viridis have both been used to designate each so 
rugose ; Some authors calling the smooth utricled form 4. viridis nen 
One A. lividus, while others have done just the reverse. We have “* 
rsp Sc the names as indicated on specimens compared by Dr. N. L. Bri 
*e—Vol, XIX, 8. 
