WILSON EXPEDITION TO CHINA 
saepe ciliata, radicalia (teste Fischer) saepe lanceolata, utrinque acu- 
minata, plantae juvenilis elliptica, basi acuta, apice plus minusve 
acuminata, v. ovato-elliptica, basisubrotunda, 5: 2.5-9: 4.5 em. magna, 
plantae maturae pleraque ovata v. late ovata, basi rotunda, raro 
subcordata, apice acuminata v. acuta, 5.5 :3.5-1:6.5 cm. magna, 
in plantis cultis etiam majora, cordato-ovata, ad 18:14 em. magna; 
petioli semper satis longi (turionum paullo breviores), 1.5-5 em. longi. 
Amenta mascula 4-5 em. longa (teste Maximowicz), fructifera ad 
13 em. longa, parce puberula v. glabra, capsulis satis approximatis, 
sessilibus v. subsessilibus, ovoideis, glabris (in var. Przewalskii pubes- 
centibus maturis glabratis), trivalvibus nondum apertis circiter 
Top n. NARS . 2. a S eus 7. P. suaveolens. 
Ramuli initio ut videtur plus minusve rubescentes, deinde olivacei, 
vetustiores cinereo-flavi, v. cinerei, plus minusve dense puberuli v. 
pubescentes sed interdum satis glabri. Folia papyracea v. saepissime 
subcoriacea, supra intense v. livide viridia, opaca, tota facie v. tan- 
tum nervis puberula, raro glabrescentia, rete nervorum angusta, 
distincta, subtus valde discoloria, albescentia v. saepissime rubello- 
flavescentia, margine glanduloso-crenulata, plus minusve ciliata, 
radicalia non visa, cetera inter se satis conformia, pleraque elliptica, 
v. ovato-elliptica, basi subeordata, apice breviter oblique acuminata 
v. acuta, interdum elliptico-rotunda, apice obtusa, 6.5 : 3-12 : 9 cm. 
magna; petioli 1—4 cm. longi, valde (v. raro vix) puberuli. Amenta 
mascula 5-10 em. longa, antheris 30-40; feminea initio 3.5-5 cm., 
fructifera ad 18(-25) em. longa, breviter tomentella, puberula v. plus 
minusve glabra, ovariis glabris, capsulis sessilibus v. subsessilibus 
subglobosis, nondum apertis circ. 8-9 : 7-8 mm. magnis, 3-4-valvibus. 
8. P. Maximowiczit. 
Ramuli juveniles turionesque distincte angulati v. biennes striati. 
Folia turionum (et pleraque ramulorum) infra medium latissima, lance- 
olata, elliptica, ovata v. cordata (haud distincte obovata) (confer 
etiam 10. P. yunnanensem et 11. P. Gamblei). 
Ramuli floriferi tereti vel subtereti (haud distincte angulati), olivaceo- 
brunnei v. ochroleuci (haud pallido-flavi v. grisei). 
: 9. P. szechwanica. 
Ramuli etiam floriferi satis angulati, pallido-flavi v. grisei. 
: ; 12. P. laurifolia. 
Folia turionum supra medium latissima, saepissime distincte obovalia, 
basi plus minusve cuneata v. rotunda, apice obtusa sed pleraque in 
acumen plus minusve longum producta . . . . . 13. P. Simoni. 
** Folia subtus concoloria viridescentia v. discoloria et glaucescentia, non albes- 
centia sed interdum tomento albo obtecta. 
1 Folia subtus plus minusve concoloria, viridescentia, utrinque stomatibus 
numerosis praedita, turionum ramulorumque vetustiorum vix v. pa 
diversa, deltoidea, basi truncata, apice plus minusve acuminata. Gem- 
mae yNMEAAR < er Y Sect. 4. AIGEIROS. 
Folia parva obovata v. ovato-deltoidea, basi plus minusve longe cuneata, 
apice breviter acuminata, supra medium crenato-denticulata v. sub- 
is 1.4-4 cm. longa et i cm. lata, initio margine ciliolata et 
parce puberula; petioli graciles, ut videtur mpressi, initio 
puberuli, 0.3-2 cm. via : T E h 
