150 WILSON EXPEDITION TO CHINA 



tibus; petala ovali-oblonga, in aestivatione valvata, 10-15 mm. longa, alba extus 

 purpuras centia v. lilacina, extus stellato-pilosa; stamina petalis dimidio breviora, 

 filamentis late alatis, exterioribus apice bidentatis dentibus obtusis antheram 

 breviter stipitatam non superantibus, interioribus paullo brevioribus lineari- 

 oblongis antheram breviter stipitatam infra apicem affixam gerentibus et ea paullo 

 brevioribus v. interdum antheram circa medium affixam gerentibus et earn superanti- 

 bus; styU 3-4, stamina subaequantes, 6-8 mm. longi. Capsula matura desideratur. 



Yunnan: Mt. "Pi-ion-se," above Ta-pin-tze, near Ta-li, June 11, 1883, J. M. 

 Delavay; Fang-yang-chang, alt. 3000 m., June 7, 1888, J. M. Delavay (No. 3543); 

 woods above Che-tong, above Ta-pin-tze, May 18, 1886, J. M. Delavay (all in 

 Herb. Mus. Paris). 



Most nearly related to D. longifolia Franchet, which is easily distinguished by 

 the close whitish tomentum of the under side of the narrower leaves, the usually 

 close whitish tomentum of the calyx, and the shorter calyx-lobes. In the pubes- 

 cence of the under side of the leaves it resembles D. glomeruliflora Franchet, but in 

 that species the hairs of the under side have only 4 to 5 rays, the leaves are smaller 

 and narrower and the flowers white and the calyx-lobes shorter. By Franchet 

 the specimens quoted above had been referred to his D. longifolia, while I had taken 

 the specimen from Fang-yang-chang, of which I had received some fragments from 

 Paris as typical D. longifolia, for D. glomeruliflora. 



316. Deutzia sessilifolia Pampanini in Nuov. Giorn. Bot. Ital. XVIII. 227 (1911). 

 Hupeh: " Monte Si-ho," July 1909 C.Silvestn, (Nos. 3001, 3001* ex Pampanini). 

 This species, of which I have seen no specimen, seems most closely related to 

 D. glabrata Komarov, but it is easily distinguished by the sessile or connate leaves. 



With the species enumerated and described above the total number of species 

 of the genus Deutzia occurring in China reaches 41. Besides these 6 others occur 

 in eastern Asia and in the Himalayas, which are all mentioned in my Synopsis 

 except D. uniflora Shirai (in Tokyo Bot. Mag. XII. 110, t. 5 (1898)) which seems most 

 nearly related to D. grandiflora Bunge, but differs in its one-flowered lateral in- 

 florescence with only small or without any leaves at the base; by the latter character 

 it approaches D. coreana Leveille, but that species is easily distinguished by the 

 ovoid calyx-tube with short triangular lobes, the very short pedicels not exceeding 

 the bud-scales and by the hairs of the lower surface of the leaves having generally 

 5 rays. 



One more species forming the section Neodeutzia occurs in Mexico; this is 

 D. mexicana Hemsley including D. mexicana, var. Pringlei Schneider originally pro- 

 posed as a distinct species by the same author. The whole genus, therefore, con- 

 tains at present 48 species. 



HYDRANGEA L.^ 



Determined by Alfred Rehder. 

 Hydrangea xanthoneura, var. Wilsonii Rehder. See p. 27. 



The paragraph under H. xanthoneura, var. glabrescens Rehder containing the 

 Nos. 1183, 1327, 1347, 2398 and 10235 has been misplaced; it belongs under 

 H. xanthoneura, var. Wilsonii, and should constitute the fourth paragraph under 

 this variety. 



1 See also p. 25-41. 



