THE GENERAL' CHARACTERS 0^ SEEDS 



449 



t 



Figure 302A 



Figure 802B 



FiQ. 302. A. CinquefOil (.Potentilla eaHddensis)'. B; Five-linger (.Potentilla mon- 

 • speli^nsis var. riorvegica) . A, tWQ seeds (aohenes), side "view- B, a seed 

 in edge view. C, group showing the natural size. 

 (After iliUraan- A, Bull. Mich. Agr. Exl). Sta:; B; Bull. Nev. Agr.' Exp. Sta.). 



Five Finger {Potentilla monspeliensis L. var. ncirvegica (L.) 



Rydb.). ■, 



Achertes small, ovate or kidnejNsliiaiped, one-twenty-fourth in, im 

 kngth, prominently ridged ; the ridges simple or branched, starting 

 from base of seed ; color light brown or straw-colored. Frequently 

 •ecura in alsike clover and timothy, as well as in red clover. 



Ayens {Geum cqMadeiise.J&cq.). 



Achene pale greenish brown, length 3 mm., width 1% mm., gen- 

 eral shape ovate, tapering to base, rounded at apex which bears 

 persistent hooked style 5 mm. in length tipped with a hook; achene 

 slightly flattened, with a narrow ring along each edge. 



.f^^n 



Figure 303A Figure 303B 



Fig. 303. A, Avens (.Geum oanadense) . B, Rose (.Bosa pratincqla). 

 (Drawings by C. M. King.) 

 29 



