SAXIFRAGACEAE. — DECUMARIA 151 



Hydrangea Rosthomii Diels. See p. 33. 

 Hydrangea Maximowiczii L6veill(S in Bull. Acad. Intern. Geog. Bot. XII. 114 

 (1903). 



Kwei-chau: "environs de Gan-pin, aux Grandes rocailles," August 



II, 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 L^veilld's 

 H. Maximowiczii and found that it can not be separated specifically from H. Rost- 

 homii. 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: 



126. Hydrangea heteromalla D. Don, Prodr. Ft. Nepal. 211 (1824). — Schneider, 



III. Handb. Laubholzk. I. 389, fig. 247 m, 270 f (1906). 



Hydrangea vestita Wallich, Tent. Ft. 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 

 moUiore et densiore obtectis, denticulato-serrulatis, vix fimbriato-denticulatis. 



Yunnan: at the foot of Tsang-shan, above Ta-U, 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 

 L^veilM are included. 



PH^OSTEGIA Hook. f. & Thorns. 

 Determined by Alfred Rehder. 



Pilostegia vibumoides Hooker f, & Thomson in Jour. Linn. Soc. 

 II. 76, t. 2 (1858). — Maximowicz in Mem. Acad. Sci. St. Petershourg, 

 s6r. 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'u an: 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). 



