30 WILSON EXPEDITION TO CHINA 



2 mm. longa; stamina valde inaequalia, minora petalis subaequi- 

 longa, majora eis duplo longiora; styli 2, patentes, apice incrassati. 

 Capsula hemispherica, apice truncata, leviter costata, 2.5-3 mm. 

 diam.; semina late elliptica, utrinque in alam constricta, striata, 

 flavido-brunnea, circa 0.6 mm. longa. 



Western Szech'uan: Wa-ssu country, Wn-chuan Hsien, thick- 

 ets, alt. 1800 m., July and November 1908 (No. 1227, type), alt. 1200- 

 2700 m., July and November 1908 (No. 1250), October 1910 (No. 

 4302); Pan-lan-shan, west of Kuan Hsien 1 , woodlands, alt. 2400 m., 

 August 1910 (No. 4483). 



Easily distinguished from allied species by its villous pubescence. 



Hydrangea glabripes Rehder, n. sp. 



Frutex metralis ramulis glabris v. fere glabris, vetustioribus flavo- 

 griseis. Folia lanceolata, acuminata, basi late cuneata v. rotundata, 

 dentato-serrulata serraturis mucronulato-acuminatis, 6-12 cm. longa 

 et 2-3 cm. lata, supra obscure flavo-viridia, satis dense strigulosa, 

 subtus pallida, hirto-villosa costa fere glabra excepta; petioli graciles, 

 1.5-4 cm. longi, glabri, tantum supra in canaliculo parce pubes- 

 centes. Cyma fere plana v. leviter convexa, 8-10 cm. diam., strigosa, 

 radiis brevibus 7-9; flores radiantes pauci, rosei, sepalis 4, late obo- 

 vatis, leviter emarginatis integris; flores fertiles rosei; calycis tubus 

 hemisphericus, glaber ima basi excepta, dentibus triangularibus min- 

 utis; petala oblongo-ovata, 1.5 mm. longa; stamina inaequalia, longi- 

 ora 4 mm. longa; styli 2. Capsulae maturae desunt. 



Western Hupeh: Fang Hsien, thickets, alt. 1200-1800 m., August 



1907 (No. 2391). 



Closely related to H. longipes Franchet which is chiefly distinguished by broader 

 strigose or glabrescent leaves, strigose branchlets, longer petioles and white flowers. 

 From all allied species H. glabripes differs in the leaves having a densely villous 

 under side and at the same time a glabrous petiole and a glabrous or nearly gla- 

 brous midrib. 



Hydrangea aspera D. Don, var. velutina Rehder, n. var. 



Differt a typo foliis minoribus subtus densius velutino-hirtellis, 

 floribus fertilibus sterilibusque coeruleis v. roseis minoribus, stylis 

 plerumque 2. Folia oblongo-ovata v. ovato-lanceolata, fimbriato- 

 denticulata, 8-12 cm. longa et 3-5 cm. lata; petioli 1-2 cm. longi; 

 petala, stamina, styli coerulea; flores radiantes steriles 3 cm. diam., 

 sepalis crenato-serratis. 



Western Szech'uan: Wa-shan, thickets, alt. 1800-2400 m., July 



1908 (Nos. 2405, 2403 (floribus omnibus sterilibus)); Mupin, thickets, 



