SAXIFRAGACEAE. — DECUMARIA 151 
Hydrangea Rosthornii Diels. See p. 33. 
Hydrangea Mazimowiczii Léveillé in Bull. Acad. Intern. Geog. Bot. XII. 114 
(1903). 
Kwei-chau: “environs de Gan-pin, aux Grandes rocailles,” August 
11, 1897, L. Martin (E. Bodinier, No. 1654, in Herb. Mus. Paris). 
Last summer I had the opportunity of seeing in Paris the type number of Léveillé’s 
H. Mazimowiczii and found that it can not be separated specifically from H. Rost- 
hornii. This extends the range of the species into Kwei-chau. 
To my Synopsis of the Chinese species (p. 34-41) the following species must 
now be added: 
12b. Hydrangea heteromalla D. Don, Prodr. Fl. Nepal. 211 (1824). — Schneider, 
Ill. Handb. Laubholzk. I. 389, fig. 247 m, 270f (1906). 
Hydrangea vestita Wallich, Tent. Fl. Nepal. t. 49 (excl. fig. 5-8) (1826). — 
Clarke in Hooker f., Fl. Brit. Ind. II. 405 (1878). $ 
Hydrangea pubescens Decaisne in Fl. des Serres, IV. t. 378-379 (non Maximo- 
wicz) (1848). 
Hydrangea heteromalla, var. mollis Rehder, n. var. 
A typo praecipue recedit ramulis junioribus, petiolis, inflorescentia dense et 
breviter albo-villosis, foliis supra sparse minuteque pubescentibus, subtus pube 
molliore et densiore obtectis, denticulato-serrulatis, vix fimbriato-denticulatis. 
Yunnan: at the foot of Tsang-shan, above Ta-li, alt. 2500 m., J. M. Delavay 
(No. 1148, fruiting specimen); same locality, June 26, 1886, J. M. Delavay (in Herb. 
Mus. Paris). 
The discovery of a variety of H. heteromalla in Yunnan adds another species of 
Hydrangea to the Chinese flora and brings their number, according to the enumer- 
ation in my Synopsis (p. 34-41) up to 29, if H. Kamienskii and H. Arbostiana of 
Léveillé are included. 
PILOSTEGIA Hook. f. & Thoms. 
Determined by ALFRED REHDER. 
Pilostegia viburnoides Hooker f. & Thomson in Jour. Linn. Soc. 
II. 76, t. 2 (1858). — Maximowicz in Mém. Acad. Sci. St. Pétersbourg, 
sér. 7, X. No. XVI. 18 (1867). — Clarke in Hooker f., Fl. Brit. Ind. II. 
405 (1878). — Hemsley in Jour. Linn. Soc. XXIII. 275 (1887). — Diels 
in Bot. Jahrb. XXIX. 376 (1900). 
Western Szech'uan: Ya-chou Fu, alt. 600-1000 m., August and 
November 1908 (No. 1385; climber 3-7 m., over trees and cliffs, 
flowers white); Kin-shan, July 1891, A. von Rosthorn (NO. 11). 
Also Hupeh, Kiangsi, Kwang-tung, Formosa, Luchu Archipelago (ex 
Hemsley). 
