RHAMNACEAE. — RHAMNUS 237 



V. obovato-lanceolata, basim versus in petiolum gracillimum 1-2.5 

 mm. longum decurrentia, apice obtusa v. emarginata, margine a medio 

 ad apicem crenato-dentata, minima 6-10 mm. longa et 2-3 mm. lata, 

 maxima ad 15 mm. longa et ad 6 mm. lata, supra cinereo-viridia, 

 subtus pallidiora, nervis utrinsecus 2-3 vix visibilibus, utrinque 

 versus basim et ad petiolum minute pilosa; stipulae setaceae, petiolis 

 plerumque duplo breviores. Flores masculi axillares, 2-5 conferti, 

 viridi-flavescentes, glabri 2.5 mm. longi; sepala ovato-lanceolata, 

 acuminata, staminibus et petalis angustissimis fere duplo longiora; 

 pedicelli 2.5-4 mm. longi, glabri. Flores femineos fructusque nondum 

 vidi. 



Western Hupeh: Fang Hsien, cliffs, alt. 1000-1300 m.. May 24, 

 1907 (No. 739)- 



This neat species is closely related to R. Rosthornii Pritzel, of which I have seen 

 the rather imperfect type specimen with fruits. These two species seem very near 

 to R. Leveilleanus Fedde and R. dunietorum Schneider. 



Rhamnus Leveilleanus Fedde, Rep. Sp. Nov. X. 272 (1911). 



Rhamnus Cavaleriei Leveille in Fedde, Rep. Sp. Nov. X. 148 (1911), nee 

 L6veill6, 1. 0. IX. 326 (1910). 



Western Hupeh: Fang Hsien, side of streams, alt. 1000-2600 

 m.. May 19, 1907 (No. 738; bush 1.5-2 m. tall, flowers greenish-yellow). 

 Kweichou:"Lo Fou " April 1907, J. Cavalerie (No. 3348, type). 



Through the kindness of M. Leveille I have had an opportunity to examine the 

 type specimen of this species, and find that the original description needs a few 

 corrections. The leaves are not quite glabrous, but distinctly pilose on the nerves 

 beneath, and the petals are always present. 



Rhamnus Leveilleanus seems to be most closely related to R. Rosthornii Pritzel, 

 which differs chiefiy in the generally smaller and narrower leaves which are quite 

 glabrous with the exception of the minute tufts of hairs in the axils of the veins 

 beneath. It is also closely related to R. dunietorum Schneider which differs in the 

 under surface of the leaves being pubescent all over and in the puberulous branchlets. 



Rhamnus dumetorum Schneider, n. sp. rr /? i-A^-i-^y^t, 



Frutex 0.75-2 m. altus, spinosus; ramuli oppositi v. suboppositi, 

 initio olivacei, tenuissime pilosi, annotini biennesque purpurascentes, 

 aequo modo pilosi v. glabri, vetustiores cinereo-brunnci ; gemmae 

 parvae, ovatae. Folia plerumque opposita, chartacea, versus apicem 

 ramulorum elongatorum obovato-lanceolata v. rhomboideo-lanceo- 

 lata, utrinque acuta, 2-3.5 cm. longa, 1-1.4 cm. lata, basi ramulorum 

 minora, eUiptica, ovata, obovata v. obovato-rotunda, 0.7-2 cm. longa 

 et 0.4-1.1 cm. lata, in apice ramulorum brevissimorum formis omnibus 



