POPL'LUS. 
387 
liei-bacea, 31. 
hirta, 17. 
Hotfmanniana, i 
holosericm, V2.. 
incubacea, 21. 
intricata, 10. 
]>amliertiana, 8. 
lanata, 25. 
lanceolata. 6. 
Lapponum. 24. 
laurina. 18. 
laxiflora. 18. 
Meyeriana, 2. 
Mjrrsinites, 2tj. 
nigricans. 17. 
nitens, 18. 
oleifolia, 14. 
pairvifolia . 21. 
pentandi'a. 1. 
petiaa, 17. 
phillyreifolia. IS. 
phylicifolia, 18. 
protumbcns. 27. 
propinqua, 18. 
prcstrata, 21. 
prunifolia. 23. 
purpurea, 8. 
radicans, 18. 
ramulosa, 8. 
repens, 21. 
reticulata, 29. 
retusa, 27*, 2?. 
rosmarinifoli;!. 19. 
rubra, 9. 
rugosa, 12. 
mpestris, 17. 
Uusselliana. 3. 
.Sadleri. 30. 
Smithiana, 12, 
sphacelata. 16. 
.stipularLs. 10. 
.stipularis, 11. 
Stuartiana, 24. 
tenuifolia, IS. 
tenuior, IS. 
tetrapla. IS. 
trianilra, 7. 
undalata, 6. 
vacciniifolia, 23. 
venulosa. 23. 
viminalis, 10. 
riridis, 3. 4. 
ritellina. 5. 
Weigeliaiia, 18. 
Woolgariana, 8. 
2. Pop'tjltjs Liwn. Poplar. 
1. P.al'ba(h.) : 1. -buds downy, 1. roundish-cordate angularly 
toothed cottony and siuncy icMte beneath, 1. of the young shoot-s 
cordate palrcately 5-lobed, sti'j. 2 linear bind crosdike (yellow). 
— E. B. 1618. — With suckers. L. generally lobed. Male cat- 
kin-scales hairy. — Damp woods. T. III. IV. White Poplar. 
Abele. E. S. 
■2. P. canes' rem (Sm.) ; l.-buds down}- not viscous, 1. roundish 
obscurely lobed sparingly cotton)/ and grey beneath, 1. of young 
shoots cordate-ovate undivided, stig. 2 ired/jeshaped 3 — \-lobed 
(purple). — E. B. 1619. — With suckers. L. not lobed. except 
occasionallv the youngest. Male catkin-scales hairv. — Damp 
woods. T.' III. IV. Gray Polar. ' E. 
3. P. trem'via (L.) : l.-buds glabrous slightly viscous, 1. nearly 
roundacuteserrate 5r/a6ro!« aw6oiAs?'c?€s,youngl.slightly downy, 
stig. 2 bifid erect. — E. B. 1909. — A small tree, v,-ith suckers. 
Petioles laterally compressed. Male catkin-scales hairy, pal- 
mately cut. — Woods. T. IV. Aspect. E. S. I. 
4. P. nigra (L.) ; l.-buds glabrous viscous, 1. triangular-rhom- 
boidal acuminate serrate glabrcni.s onboth sides, catkins lax cylin- 
drical; stig. 2 roundish 2-lobed. E. B. 1910. — A large tree, 
\vithout suckers. Petioles laterally compressed. Young shoots 
glabrous. Male catkin-scales glabrous. — Damp places and riv^-r- 
banks. T. III. Black Poplar. E. 
