SAXIFRAGACEAE. — HYDRANGEA 31 
alt. 1200-1500 m., June 1908 (No. 2404); Lungan Fu, thickets, alt. 
1800-2700 m., August 1910 (No. 4482). 
This form is probably best treated as a variety of H. aspera, though it shows a 
close relation to H. villosa; it lacks, however the villous and fulvous hairs of that 
species. In No. 2404 and 4482 the pubescence is less velutinous and approaches 
that of H. strigosa. 
Hydrangea aspera, var. scabra Rehder, n. var. 
A typo recedit praecipue foliis ovatis v. ovato-oblongis, basi rotun- 
data v. subeordata, supra manifeste scabra, subtus dense velutino- 
hirtellis, 12-18 em. longis et 7.5-10 em. latis. Capsula cirea 3 mm. 
diam., stylis 2. 
Western Szech’uan: southeast of Tachien-lu,. thickets, alt. 
2400 m., October 1910 (No. 4485). 
In the shape of the leaves this variety approaches somewhat H. Rosthornii Diels, 
but is easily distinguished by the nearly velutinous pubescence of the under side 
of the leaves and by the shorter petioles. 
Hydrangea strigosa Rehder, n. sp. . 
H. aspera Hemsley in Jour. Linn Soc. XXIII. 272 (not D. Don) (1887). — 
Pampanini in Nuov. Giorn. Bot. Ital. n. ser. XVII. 283 (1910). 
H. aspera, f. typica Diels in Bot. Jahrb. XXIX. 375 (1900). 
Frutex 2-3 m. altus, ramulis junioribus teretibus v. leviter angu- 
latis strigosis, vetustioribus griseo-brunneis lenticellis destitutis. 
Folia oblonga v. oblongo-lanceolata, acuminata, basi cuneata, denti- 
culato-serrata serraturis porrectis parvis mucronulatis, 8-23 cm. 
longa et 2-6 cm. lata, supra sparse strigosa, subtus densius strigosa, 
praecipue ad venas; petioli 1.5-3 cm. longi, dense strigosi. Cyma 
convexa, radiis 5-7, dense strigosa; flores radiantes graciliter pedi- 
cellati, sepalis late ovalibus plerumque mucronulatis integris v. 
Sparse serrulatis; flores fertiles albi; sepala triangularia, calycis di- 
midium tubum parce strigosum vix aequantia, glabra v. fere glabra; 
petala ovato-oblonga, 2 mm. longa; stamina longiora cirea 6 mm. 
longa, breviora dimidio breviora; styli 2. Capsula hemispherica, 
truneata, 3 mm. alta, costata; semina late elliptica, utrinque subito 
in alam contracta, striata, 0.6 mm. longa, flavo-brunnea. 
Western Hupeh: north and south of Ichang, thickets, alt. 500- 
1200 m., August and December 1907 (No. 765, type): Hsing-shan 
Hsien, thickets, alt. 900-1500 m., August and December 1907 (Nos. 
773, 2394); Patung Hsien, thickets, alt. 1200-1500 m., August 1907 
(Nos. 2392, 2395); Fang Hsien, thickets, alt. 1200-1800 m., August 
1907 (No. 2390, with all the flowers sterile); Packang, 1901 (Veitch 
