SAXIFRAGACEAE. DEUTZIA 7 



Deutzia Schneideriana Rehder, n. sp. 



Deutzia staminea Hemsley in Jour. Linn. Soc. XXIII. 277 (not R. Brown) (1888). 

 Deutzia crenata Hemsley, 1. c. (in part as to the Hupeh specimens) (not Siebold 

 & Zuccarini). 



Frutex 1-2 m. altus ramulis fusco-purpureis, initio sparse stellato- 

 pilosis, mox glabrescentibus, vetustioribus griseo-brunneis cortice 

 detersili. Gemmae pluri-perulatae, stellato-pilosae. Folia subchar- 

 tacea, elliptico-ovata, interdum ovata v. elliptico-oblonga, breviter 

 acuminata, basi late cuneata v. interdum rotundata, argute serru- 

 lata, 3.5-7 cm. longa et 1.5-3 cm. lata, supra pilis 5-6-radiatis laxe 

 conspersa, subtus canescentia v. albida, dense pilis 12-14-radiatis ob- 

 tecta, ad venas pilis longis simplicibus instructa, utrinsecus 4-6-cos- 

 tata; petioli parce stellato-pilosi, 3-4 mm. longi. Inflorescentia late 

 paniculata, 3-6 cm. longa; calyx hemisphericus, dense stellato-pilosus 

 dentibus triangularibus tubum subaequantibus; petala oblonga, 

 circa 10 mm. longa, extus stellato-pilosa; stamina longiora petalis 

 quarta parte breviora v. interdum fere aequantia, filamentis dilatatis 

 apice manifeste dentatis dentibus antheram vix attingentibus; styli 

 plerumque 3, graciles, stamina subaequantes. Capsula hemispherica, 

 apice leviter contracta, 5-7 mm. diam., calyce deciduo. 



Western Hupeh: Chang-lo Hsien, thickets, alt. 900-1200 m., 

 June 1907 (No. 2889, type) ; without locality, June 1901 (Veitch Exped. 

 No. 2152, 2152 a ); Ichang, A. Henry (No. 3571); without locality, 

 A. Henry (No. 1968). 



Most nearly related to D. scabra Thunberg, which is easily distinguished by the 

 leaves being only sparingly stellate-pubescent and therefore green on the under- 

 side, without simple hairs on the veins, by their crenulate-serrate margin with ap- 

 pressed serratures and by the narrow, nearly cylindric panicles, while the related 

 D. hypoleuca Maximowicz differs in its five styles and narrow panicles. I take 

 pleasure hi associating with this species the name of Mr. C. K. Schneider whose 

 "Beitrag zur Kenntnis der Gattung Deutzia" (in Mitt. Deutsch. Dendr.Ges. XIII. 

 172-188 (1904) is a valuable contribution to the knowledge of this genus. 



Deutzia Schneideriana, var. laxiflora Rehder, n. var. 



A typo differt praecipue foliis subtus viridibus, sparsius stellato- 

 pilosis, paniculis laxioribus latioribusque. Frutex 2-2.5 m. altus. 

 Folia oblongo-lanceolata, acuminata, basi rotundata v. late cuneata, 

 remote et irregulariter denticulata, 5-7 cm. longa et 1.5-2.3 cm. lata, 

 supra pilis 4-5-radiatis sparsius, subtus pilis 10-12-radiatis densius 

 conspersa. Panicula 6-9 cm. longa et 5-8 cm. lata, ramulis infimis 

 floribus inclusis 4-5 cm. longis; petala 12-14 mm. longa, acutiuscula. 

 Capsula 5 mm. diam. Ceterum ut in typo. 



