RUTACEAE. — ZANTHOXYLTJM 123 



Zanthoxylum pilosulum Rehder & Wilson, n. sp. 



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

 V. breviter dense pilosuli, purpureo-rufescentes, aculeis stipularibus 

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

 brescentes. Folia decidua, 3-5-, plerumque 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. 

 acutiuscula, apice plerumque 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, pilostila, 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. 



Zanthoxylum pteracanthum Rehder & Wilson, n. sp. 



Frutex 2-3-metralis ramis divaricatis; ramuli glabri, dense aculeis 

 setaceis fuscis per plures annos persistentibus obtecti et aculeis stipu- 

 laribus valde compressis longe decurrentibus et alas formantibus 

 instructi, ala quavis plerumque per duo internodia decurrente et 

 aculeas duas conjungente, ideoque ramuli fere undique 3-alati ; ramuli 

 vetustiores cinerei. Folia cum 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, 5-6 cm. diam., sessilis, minutissime 

 pilosula et ad basin sparse breviter setosa; pedicelli 5-8 mm. longi, 

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



