SAXIFRAGACEAE. — HYDRANGEA 29 
Hydrangea Sargentiana Rehder, n. sp. 
Frutex robustus bimetralis; ramuli juniores dense villosi et excre- 
scentiis crebris e trichomatibus basi confluentibus purpureis formatis 
praediti. Folia ovato-oblonga, acuminata, basi rotundata v. interdum 
subcordata v. late cuneata, inaequaliter et fere dupliciter ciliato- 
dentata dentibus setaceo-acuminatis, 15-30 em. longa et 6.5-16 cm. 
lata, supra obscure viridia, scabro-strigosa, subtus dense villoso-hirta, 
ad nervos hirto-pilosa excrescentiis purpureis intermixtis; petioli 
dense pilosi et excrescentiis purpureis instructi, 3-9 cm. longi. Cyma 
fere plana, 12-16 em. diam., densa, dense pubescens, e radiis oppo- 
sitis congestis 7-13 composita; flores radiantes graciliter pedicellati 
2.5-3.5 em. diam. albi, sepalis 4, orbiculato-obovatis integris; sepala 
florum fertilium late triangularia, tubo dimidio breviora; petala ovata, 
mox caduca, apice interdum calyptratim coherentia, 2 mm. longa; 
Stamina breviora petalis aequilonga, longiora cirea 4 mm. longa; 
styli plerumque 3 v. interdum 2. Capsula hemispherica, leviter 10— 
12-costata, apice truncata, 3 mm. diam.; semina elliptica, utrinque in 
alam brevem contracta, striata, flavo-brunnea, circa 0.7 mm. longa. 
Western Hupeh: Hsing-shan Hsien, thickets, alt. 1500-1800 m., 
August and December 1907 (No. 772). 
Adistinet species with large and handsome foliage similar to H. robusta Hooker 
f. & Thomson, which is easily distinguished by its strigose pubescence, ovate 
leaves, by the serrate sepals of the sterile flowers and the larger capsule. The allied 
H. Rosthornii Diels also differs in its strigose pubescence and ovate leaves. 
Hydrangea villosa Rehder, n. sp. 
Frutex 1-3 m. altus ramulis junioribus albido- v. fulvo-villosis 
angulatis. Folia elliptico- v. oblongo-lanceolata, acuminata, basi 
cuneata, fimbriato-denticulata dentibus setaceo-acuminatis, 10-20 
em. longa et 3.5-6.5 cm. lata, supra obscure flavo-viridia, scabro- 
strigosa pilis basi bulbosis, ad costam mediam pilis longioribus al- 
bidis instructa, subtus pilis patentibus hirto-villosis incano-tomentosa, 
ad nervos pilis ad 3 mm. longis et saepe, praesertim ad costam mediam, 
fulvescentibus v. fulvis praedita; petioli villosi saepe pilis fulvis longis 
patentibus interspersis, 1-4 em. longi. Cyma convexa, interdum 
plana, albido- v. fulvo-villosa, radiis oppositis 7-9 satis remotis 
composita; flores radiantes graciliter pedicellati, 3-4 cm. diam., coeru- 
lescentes, sepalis 4 orbiculato-obovatis plerumque crenulatis; pedi- 
celli florum fertilium strigosi, tubum calycis glabri v. basi tantum 
strigosi subaequantes, dentibus triangularibus vix dimidium tubum 
aequantibus; petala oblongo-ovata, acutiuscula, concava, patentia, 
