SAXIFRAGACEAE. — DEUTZIA 21 



rays in D. discolor and generally 4 rays with a central ray in D. mollis, while in 

 the hybrid they have generally 8 rays only part of them with a central ray; the 

 calyx-lobes, which are lanceolate and longer than the tube in D. discolor and 

 broadly ovate, abruptly acuminate and about half as long as the tube in D. mollis, 

 are oblong-ovate, acuminulate and about as long as the tube in the hybrid; the 

 filaments, which are gradually narrowed toward the apex in D. mollis and distinctly 

 toothed in D. discolor, are in the hybrid mostly abruptly contracted or have only 

 very short teeth; also the shape of the leaves and some other minor characters are 

 intermediate. 



20. Deutzia densiflora Rehder. See p. 12. 



21. Deutzia albida Batalin in Act. Hort. Petrop. XIII. 97 (1893). 



Deutzia discolor, var. albida Schneider in Mitt. Deutsch. Dendr. Ges. XIII. 183 

 (1904). 

 Kansu: banks of the river Pai-shui between Lidshapu and Kwantin, G. Potanin 

 (ex Batahn). 



I have not seen the type specimen, but according to the description the species 

 differs from D. discolor in so many points that I cannot follow Schneider in referring 

 it to that species as a variety. 



22. Deutzia longifolia Franchet. See p. 13. 

 Subsect. 4. GRANDIFLORAE Rehder, n. subsect. 



Chiefly characterized by the 1-3-fiowered inflorescence borne at the end of short 

 leafy branchlets, by the partly superior ovary, the lanceolate calyx-teeth and the 

 re-curved teeth of the filaments. 



23. Deutzia grandifiora Bunge in Mim. Sav. 6tr. Acad. Sci. St. Pelersbourg II. 104 

 {Enum. PI. Chin. Bor.) (1832). — Maximowdcz in Mem. Acad. Sci. St. Petersbourg, 

 s6r. 7, X. No. XVI. 30 (1867). 



D. Baroniana, var. insignis Pampanini in Nuov. Giom. Bot. Hal. n. ser. XVII, 

 282 (1910). 



Chihli: A. Bunge; Kalgan road near Pekin, October 5, 1905, J. G. Jack; Wei- 

 chang, 1910, W. Purdom (No. 16). Hupeh: April 1901, E. H. Wilson (Veitch 

 Exped. No. 1870); Ou-tan-shan, C. Silvestri (ex Pampanini). 



The Hupeh specimens differ from the type in their narrower leaves and in the 

 elongated and somewhat wavy rays of the hairs of the under side of the leaves, so 

 that the tomentum appears more villose and not as closely appressed as in the 

 type; in this respect it approaches the following variety. I have seen no specimen 

 of Pampanini's var. insignis, but from his description it appears not to be differ- 

 ent from typical D. grandifiora. 



Deutzia grandifiora, var. Baroniana Rehder, n. var. 

 Deutzia Baroniana Diels in Bot. Jahrb. XXIX. 372 (1901). 



Northern Shensi: Tui-kia-shan, G. Giraldi (No. 1656 ex Diels); Shan-geus, 

 Lao-y-san, May 19, 1899, G. Giraldi (No. 4522). 



Differs from the type chiefly in the heteromorphous and thinner grayish green 

 pubescence of the under side of the narrower leaves which are usually broadly 

 cuneate at the base; the stellate hairs have only 5-7 rays mostly with a central 

 ray, not 7-9 without central ray as in the type. The flowers of No. 4522 agree 

 with those of the type. I cannot follow Schneider in referring the Shensi plant to 

 D. grandifiora, var. glabrata Maximo wicz; the pubescence of the latter is homomor- 

 phous, the hairs having 6-9 short rays and are only sparingly distributed over the 

 lower surface, not touching each other. 



Deutzia grandifiora, var. j3 minor Maximowicz in Mem. Acad. Sci. St. Piters' 

 bourg, s6r. 7, X. No. XVI. 31 (1867). 



