10 WILSON EXPEDITION TO CHINA 



tinguished by its long-peduncled lax inflorescence and by the narrower, thinner, 

 denticulate, scarcely lustrous leaves. 



Deutzia Fargesii Franchet in Jour, de Bot. X. 281 (1890). 



Western Hupeh: Fang Hsien, thickets, alt. 900-1200 m., June 

 1910 (No. 4488). EasternSzech'uan: Ky-min-se, near Chang-k'on, 

 R. P. Farges (No. 1043). 



Franchet describes the leaves "utraque facie glabra " but they are on the under 

 side rather densely covered with closely appressed, minute, 6-7-radiate hairs, 

 hardly visible to the naked eye. 



Deutzia glomeruliflora Franchet in Nouv. Arch. Mus. Paris, ser. 

 2, VIII. 236 {PI David. II. 54) (1885). 



Western Szech'uan: Mupin, April 1869, A. David (ex Franchet); 

 Mupin, thickets, alt. 1800-2100 m., June and October 1908 (No. 1188); 

 Tachien-lu, thickets, alt. 1800-2500 m., June 1908 (No. 2891), alt. 

 1300-2700 m., June 1908 (No. 2901); valley of Hsao-chin Ho, near 

 Monkong Ting, alt. 2100-2400 m., June 1908 (No. 2899); Cheto- 

 shan, southwest of Tachien-lu, alt. 3500 m., October 1910 (No. 4383); 

 no locality, May 1904 (Veitch Exped. No. 3568). Yunnan: woods 

 near Fang-yang-chang, alt. 3000 m., June 7, 1888, J. M. Delavay. 



Wilson's specimens show a wide range of variation. His No. 2S91, with its small 

 and dense inflorescences on short branchlets bearing only a few small leaves and 

 sometimes nearly leafless, seems nearest to the type. All his specimens, however, 

 have the flowers larger than those described by Franchet, particularly No. 2901, 

 which has the petals 14 mm. long and 10 mm. broad. Sometimes, as in No. 2899, 

 the flowers are borne on elongated branchlets with three pairs of well developed 

 leaves. This tends to show that the type specimen does not present the normal 

 development of the species, but a somewhat abnormal precocious state, as may be 

 inferred from the fact that the type specimen was collected in April, while Wilson's 

 flowering specimens were aU gathered in June. No. 1188 has the pubescence of 

 the calyx heteromorphous, as described by Franchet, while in the other specimens 

 the pubescence is homomorphous except in Delavay's specimen from Yunnan, 

 which differs besides in its broader leaves. 



Deutzia glomeruliflora x longifolia Rehder, n. hybr. 



Frutex 2 m. altus ramulis rubro-fuscis, junioribus stellato-pilosis, 

 annotinis peridermate solubili. Folia ovato-oblonga v. ovato-lanceo- 

 lata, acuminata, basi rotundata v. late cuneata, argute serrata, 2.5-5 

 cm. longa et 1-1.5 cm. lata, supra laete viridia piHs 4-5-radiatis 

 conspersa, subtus pallidiora v. canescentia pilis 5-8-radiatis partim 

 radio centrali instructis et ad venas etiam simplicibus et fasciculatis 

 interspersis obtecta; petioli stellato-pilosi, circa 2 m. longi. Cyma 

 convexa, in apice ramulorum brevium; pedicelli plerumque tubum 

 calycis aequantibus; calycis dentes lanceolati tubum pube hetero- 



