Germination of the Seeds of Aquatic Plants. 
359 
Percentage of Germinating 
Seeds in successive years. 
Number'number| Conditions |_~°* ‘ 
SPECIES. Experi of of Sa 
axperi- cide a ie9 og 
ment, | Seeds. | Experiment. He | 7, | a. IL|IVv.| V. 
° 
me | ee 
Potamogeton lucens, 34 | 40 | Wet Mud, | 0 | 10 | 10 | 10} 5) R 
Potamogeton crispus, 35 100 Water. 0 | 68} 10}. 5 
36 60 Wet Mud. 0 6| 26). i 
Potamogeton natans, 37 3500 Water. 0 4*| 16) 22 | 38 le 
3 250 Water. 0 Oa SB eres E 
39 250 Water. 0 0| 9] 8 | 55 E 
40 36 Water. 0 6} 25) 19 9 E 
41(A) 23 Wet Mud. 0 SEBO dere |reteta R 
41(B) 76 Water. 0 Oi BZ 20 E 
Potamogeton oblongus, 42 170 Water. 0 Sia) Laie eal| 
43 260 Water. 0 BAlll (tsi|\aeeal lac an joao R 
44 100 Water. 1 AS UG ara ore [lene oll letetare E 
45 50 Wet Mud. 0 Al v2: S otba laeee looge R 
Potamogeton pusillus, 46 125 Water. 0 TN) UA SP Dae rail! 
47 100 Wet Mud. 0 4 CH) EL ee ce 1a: 
Sagittaria sagittifolia, 48(A) 50 Wet Mud. 0 PANY! sil en arllacion BG mat leaah 
48(B) 90 Water, 0 BYt bi) “Balle ealise call) 19; 
after drying 
7 weeks, 
Damasonium stellatum, . 48(c) 50 | Water. 0 66| 6) 22 | : os R 
Tris pseudacorus, 49 120 Water. 0 12] 0 ASN aero ide: 
50 129 Water. 0 Stay a Saal aoe wi| eR 
51 16 Water. 0 aks ECO ERE eres Isaac R 
52 21 Water. 0 C0) ONES allao esl lacer R 
Arundo phragmites, 53 | 50 | Water. Oy \faretlles seo | sei | es R 
— — | = 
Ranunculus repens, 54 | 150 | Water. 12 Dai QBN e.. i . |. : E 
Rhinanthus erista-galli, . 55 70 | Water | 0 27| 15) 4 ea at R 
Lycopus europeus, | 56 220 | Water. 0 | 6 | ra | eeerete erate ay ereil eee 
ee | 
Scutellaria galericulata, . 57 | 50 | Water. 0 | 0} O4bls Sachaaer eee ks R 
Rumex hydrolapathum, . | 58 500 | Water. 25 28 | A eras 1D) 
Alnus glutinosa,  . : | 59 370 Water. 0 | 20). R 
| Carex paniculata, : | 60 | 115 Water. | 0 ; 69] 0} 37 |. R 
| 
Carex paludosa, : | 61 100 Water. | 0 0 BO Ser ee E 
* Only 18 fruits of P. natans germinated in this year, 
