SAXIFRAGACEAE. — DEUTZIA 19 



Eastern Szech'uan: near Ch'eng-k'ou (ex Franchet). — Western Hupeh: 

 Ichang, A. Henry (No. 3585); without locality, A. Henry (Nos. 3480, 4139); 

 Fokien: April to June 1905, S. T. Dunn (Herb. Hongkong Bot. Gard. No. 2676). 

 I have not seen the type specimen itself, but a good photograph of it. As this 

 and Franchet's description agrees fairly well with the specimens cited above, I 

 trust that I have made no mistake in referring them to D. selchuenensis. 

 Deutzia setchuenensis, var. longidentata Rehder. See p. 8. 

 Deutzia setchuenensis, var. corymbiflora Rehder. See p. 9. 



9. Deutzia Silvestrii Pampanini in Nuov. Giorn. Bot. Hal. n. ser. XVII. 282 

 (1910). 



Western Hupeh: near Siang-yang, C. Silvestri (Nos. 671, 868, 869, 870, 872). 



I have seen no specimen of this species; according to the description by Pam- 

 panini it is nearest to D. setchuenensis var. corymbiflora, but differs chiefly in the 

 longer calyx-lobes and narrower rose-colored petals. 



10. Deutzia coriacea Rehder. See p. 9. 



11. Deutzia Fargesii Franchet. See p. 10. 



Subsect. 3. STENOSEPALAE Schneider in Mitt. Deutsch. Dendr. Ges. XIII. 

 184 (1904). 



Calyx-teeth lanceolate or sometimes oblong-ovate, as long or longer, rarely 

 slightly shorter, than the tube; the cymes usually rather dense and many-flowered, 

 more or less panicle-Uke. Besides the following species D. staminea R. Brown and 

 probably D. macrantha Hooker f. and Thomson, which I have not seen, belong to 

 this group. 



12. Deutzia glomeruliflora Franchet. See p. 10. 



13. Deutzia subsessilis Rehder. See p. 11. 



14. Deutzia purpurascens Rehder, n. sp. 



Deutzia discolor, var. purpurascens Franchet apud Henry in Le Jardin, 1894, 

 147, fig. 64. — Sargent in Gard. and For. VII. 284, 287, fig. 84 (1894).— 

 Gard. Chron. ser. 3, II. 45, fig. 25 (1899).— Hooker f. in Bot. Mag. CXXVI. 

 t. 7708 (1900). — Lemoine in Jour. Soc. Hort. France, sdr. 4, III. 301 

 (1902). — Schneider, HI. Handb. Laubholzk. I. 381, fig. 244 e-f (1905). 

 Yunnan, /. M. Delavay (ex Franchet). — In cultivation (Arnold Arboretum, 

 etc.). 



Deutzia purpurascens differs in several important characters from D. discolor, 

 and I consider it a well marked species much less closely related to D. discolor 

 than any of the following species of this group. It is particularly well distinguished 

 by the stellate hairs of the under side of the leaves which have only 5-7 rays, while 

 in all the following species they have 10-14 rays, and besides from D. discolor by 

 its smaller generally ovate leaves, greenish beneath, smaller inflorescence, purpUsh 

 flowers, and shorter stamens with the filaments exceeding the anthers. 

 Deutzia piirpurascens, var. pauciflora Rehder, n. var. 



Frutex metralis ramulis gracilibus, junioribus stellato-pilosis, annotinis elevato- 

 asperatis flavido-griseis. Gemmae parvae perulis late ovatis acutiusculis extus 

 dense pubescentibus. Folia ovata v. oblongo-ovata, acuminata, basi rotundata v. 

 late cuneata, argute serrulata, 1.5-3.5 cm. longa et 1-1.4 cm. lata, laete viridia, 

 concoloria, supra piUs 4-5-radiatis, subtus pilis 5-6-radiati3 sparse conspersa; 

 petioli sparse stellato-pilosi, 1-2 mm. longi. Cymae breves, 1-3-florae, stellato- 

 pilosae, ramulos laterales brevissimos terminantes; pedicelU 2-4 mm. longi; calyx 

 stellato-pilosus, dentibus ovato-oblongis obtusiusculis rubescentibus tubum aequan- 

 tibus V. pauUo longioribus; petala ovato-oblonga, 9 mm. loaga, marginc erosa, alba; 

 filamcnta antheras superantia, exteriora dentibus obtusis, interiora apicc obtuso; 



