RUTACEAE. — ZANTHOXYLXJM 123 



Zanthoxylum pilosulum Rehder & Wilson, n. sp. 



Frutex 1-2-metralis ramis divaricatis; ramuli homotini puberuli 

 V. breviter dense pilosuli, purpureo-rufescenteSj aculeis stipularibus 

 compressis et basi valde dilatatis muniti, aimotini fusco-grisei, gla- 

 brescentes. Folia decidua, 3-5-, pleruinque 4-juga cum petiolo 5-8 

 mm. longo 4.5-8 cm. longa; foliola brevissime petiolulata v. fere 

 sessilia, ovato-elliptica v. oblongo-lanceolata, breviter acuminata v. 

 acutiusculaj apice plerxunque emarginata, basi late cuneata, margine 

 irregulariter et remote crenulata, sinubus glanduliferis; 1-3 cm. longa 

 et 0.6-1 cm. lata, glabra, supra obscure luteo-viridia, subtus palli- 

 diora, et saepe in costa media aculeis 1-2 gracilibus instructa; petioli 

 et rhaches glabra, supra canaliculata et angustissime alata, aculeis 

 paucis gracilibus rectis instructa. Inflorescentia terminalis corym- 

 bosa, sessilis, pilosula, 3.5-4 cm. longa et 4-5 cm. lata; pedicelli 

 graciles, 7-12 mm. longi; carpella fertilia plerumque 2, immatura. 

 Flores ignoti. 



Western Szech'uan: Monkong Ting, descent of Hsaochin Ho, 

 alt. 2300-3000 m., June 1908 (No. 2687). 



This new species is apparently most closely related to F. setosum Hemsley, 

 which differs chiefly in the pubescent leaves and in the paniculate inflorescence with 

 short pedicels; it is also related to F. Bungei Planchon and F. Piasezkii Maximo- 

 wicz, which both are easily distinguished by their glabrous branchlets and glabrous 

 inflorescence, the shorter pedicels and the less dilated prickles. 



lum pteracanthum 



ramis divaricatis: ramuli 



setaceis fuscis per plures annos persistentibus obtecti et aculeis stipu- 

 laribus valde compressis longe decurrentibus et alas formantibus 

 instruct!, ala quavis plerumque per duo intemodia decurrente et 



conjungente, ideoque ramuli fere undique 



1 



vetustiores cinerei. Folia cimi petiolo 1.5-2,5 cm. longo 10-15 cm. 

 longa, 3-6-juga; foliola breviter petiolulata opposita v. subopposita, 

 oblonga v. ovato-lanceolata, acuminata, apice obtusa v. emarginata, 

 basi obliqua late cuneata v. fere rotundata, minute crenulata sinubus 

 glanduliferis, 2-3.5 cm. longa et 0.8-1.5 cm. lata, glabra, supra sa- 

 turate viridia, subtus pallidiora; petioli rhachesque glabra canalicu- 

 lata, marginata, aculeis paucis compressis rectis instructa. Inflores- 

 centia terminalis, corymbosa, 5-d cm. diam., sessilis, minutissime 

 pilosula et ad basin sparse breviter setosa; pedicelli 5-S mm. longi, 

 graciles; flores non visi. Carpella matura 1-3, pubescentia, circiter 5 



