248 WILSON EXPEDITION TO CHINA 
Pedicellorum pars superior parte inferiore plus minusve aequilonga v. brevior. 
Inflorescentia fasciculata, 10-15-flora; perigonia in facie partesque superi- 
ores pedicellorum fere glabra. Samarae maturae lanceolatae, circiter 
1-1.2 em. longae. Folia (fide Brandis) ovato-oblonga, 4—11 cm. longa, 
glabra. uve cau dob eel a eee motae 2. U. villosa. 
Inflorescentia fasciculata (fide Hance) 5-9-flora; perigonia in facie et pedi- 
cellorum partes superiores plus minusve distincte puberulae. Samarae 
maturae circiter 2.5 cm. longae. Folia ramulorum fertilium rhomboideo- 
subrotunda, ad 5 cm. longa, subtus pilosa et barbata. 
3. U. macrocarpa. 
Samarae maturae undique glabrae . . . . . . . . . . Ser. b. EUGLABRAE. 
Inflorescentia plus minusve elongato-cymosa; pedicellorum pars superior 
parte inferiore pilosa v. perigonio saepe ad 2-214-plo longior v. sama- 
rarum maturarum stipites distincti perigonio circiter duplo longiores. 
Folia satis lanceolato-elliptica, circiter 214-plo longiora quam lata; 
POOL circiter. Pom: longi .—- es ee 4. U. Brandisiana. 
Inflorescentia fasciculata (v. in U. Bergmanniana et U. Uyematsui paulo 
elongata); pedicellorum pars superior parte inferiore pilosa v. pergionio 
vix longior v. subbrevior. Samararum maturarum stipites perigonio 
breviores v. rarius in U. Bergmanniana var. lasiophyllalongiores. Petioli 
plerique breviores. : 
Pedicelli fructiferi toti 5-7 mm. longi . . . ... 5. U. Uyematsut. 
Pedicelli fructiferi toti 2-4 mm. longi. : 
Samarae late obovatae v. obovato-rotundae. Ramuli annotini brunnei 
v. rubro-brunnei, etiam hornotini glabri v. perulae gemmarum dorso 
glabrae. Folia obovato-oblonga, obovato-elliptica v. elliptica. - 
6. U. Bergmanniana. 
Samarae elliptico- v. obovato-oblongae v. elliptico-rhomboideae. Ra- 
muli hornotini annotinique fere semper pilosi, saepe scabri v. gem- 
marum perulae in dorso pilosae v. folia distinctius obovata v. apice 
3(—-5)-lobata. 
Ramuli novelli plus minusve hirsuti v. annotini distincte brunnes- 
centes. Folia ramulorum fructiferorum nunquam apice trilobata. 
7. U. glabra. 
Ramuli novelli vix hirsuti v. cito glabri, annotini plerique grisei v. 
flavescentes. Folia etiam ramulorum fructiferorum pro pt 
apice 3(—-5)-lobate-< — er 2. 2a. $4 8. U. laciniata. 
Semina apice samarae juxta emarginaturam sita v. tantum paulo ab ea remota 
(et tantum in fructibus satis brevibus et latis U. pumilae in centro samarae 
ERA) o ee ee ee Subsect. 2. FOLIACEAE. 
Pedicellorum pars inferior pilosa parte superiore subaequilonga v. brevior, 
vix v. rarius ea v. perigonio paulo longior (v. folia non coriacea lucida- 
que et non simpliciter obtuse serrata). oe 
Samarae pleraeque obovatae v. satis anguste ellipticae, interdum in disco 
seminitego pilosae, v. folia satis magna, nervis utrinsecus 16 v. ultra 
instructa, basi distincte inaequalia, margine dupliciter serrato-dentata. 
Ser.a. NITENTES. 
Samarae undique glabrae (v. in U. japonica tantum juveniles in disco 
parce pilosae). A 
Samarae oblongo-ellipticae, circiter duplo longiores quam latae. Folia 
lanceolata v. elliptico-lanceolata, subtus tantum in axillis nervorum 
lateralium (lateris longioris 18-24, apice satis sensim producto 
incluso) barbata, coriacea. Gemmae apice ramulorum obovato- 
