SAXIFRAGACEAE. — DEUTZIA / 



Deutzia Schneideriana Rehder, n. sp. 

 Deutzia staminea Hemsley in Jour. Linn. Soc. XXIII. 277 (not R. Brown) (_18S8). 

 Deulzia crenala Hemsley, I. c. (in part as to the Hupeh specimens) (not Siebold 

 & Zuccarini). 



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

 pilosis, mox glabrescentibus, vetustioribus griseo-brunncis 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'^); Ichang, A. Heriry (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 cyUndric panicles, while the related 

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

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

 "Beitrag zur Kenntnis der Gattimg 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. 



