SAXIFRAGACEAE. DEUTZIA 13 



Allied to Deutzia discolor Hemsley, which is easily distinguished by its looser 

 cymes, lanceolate calyx-teeth and by the interior filaments not exceeding the 

 anthers and usually bidentate. 



Deutzia longifolia Franchet in Nouv. Arch. Mus. Paris, se*r. 2, 

 VIII. 235 (PL David. II. 53) (1885). 



Szech'uan: Mupin, David (ex Franchet); Mupin, thickets, alt. 

 1500-2300 m., June and October 1908 (No. 1186); southeast of Ta- 

 chien-lu, thickets, alt. 1800-2700 m., June and October 1908 (No. 

 1321, 1322, 2892); Wa-shan, thickets, common, alt. 1500-1800 m., 

 June and November 1908 (No. 1340); Pan-lan-shan, west of Kuan 

 Hsien, thickets, alt. 2400-2700 m., October 1910 (Nos. 4298, 4326); 

 Sungpan, thickets, alt. 2700 m., October 1910 (No. 4300); without 

 locality, July 1903 (Veitch Exped. No. 3567, 3567 a ); Tachien-lu, 

 A. E. Pratt (No. 677). 



Though Wilson's specimens differ from the description of D. longifolia Franchet, 

 of which I have not seen the type, in the broader leaves and larger flowers, I have 

 no doubt that they must be referred to this species. The leaves of Wilson's speci- 

 mens are sometimes ovate-oblong and 3 cm. broad and the petals attain 14 mm. 

 in length. From the allied species D. longifolia is readily distinguished by the 

 narrower, rather thickish leaves, rugose above and with strongly elevated veins 

 on the whitish under side, by the heteromorphous pubescence of the under side, 

 the purplish flowers in many-flowered paniculiform cymes usually loose and borne 

 on elongated branchlets, but sometimes rather dense and on short branchlets, by 

 the usually four styles and larger capsules measuring about 6 mm. in diameter. 



Deutzia mollis Duthie in Gard. Chron. ser. 3, XL. 238 (1906). 

 Hup eh: without locality (Veitch Exped. Nos. 1959, 2282, type); 

 Hsing-shan Hsien, thickets, alt. 1500-1800 m., June 1907 (No. 2894). 

 A natural hybrid of this species with D. discolor is described below. 



Deutzia rubens Rehder, n. sp. 



Frutex metralis ramulis gracilibus rubro-fuscis, junioribus sparsis- 

 sime stellato-pilosis, mox glabrescentibus, annotinis cortice detersili. 

 Gemmae perulis numerosis lanceolatis, acuminatis, exterioribus 

 glabris, obscure castaneis. Folia membranacea, oblonga v. ovato- 

 oblonga, acuminata, basi plerumque attenuata, rarius rotundata, 

 argute minuteque serrulata serraturis plerumque purpureis, 4-7 cm. 

 longa et 1.5-3 cm. lata, subconcoloria, utrinque sparse stellato-pilosa, 

 supra plerumque pilis 4-radiatis, subtus 5-6-radiatis insuperque 

 minute punctulata, utrinsecus 5-6-costata; petioli sparse stellato- 

 pilosi, 2-4 mm. longi. Cyma pluriflora v. multiflora, convexa, parce 

 stellato-pilosa, plerumque breviter pedunculata; pedicelli graciles, ad 

 2.5 cm. longi; calycis stellato-pilosi dentes ovati, subito acuminulati, 



