JUGLANDACEAE. — PETEROCARYA 183 



tin," 72. P. Farges. Western Szech'uan: Chiu-ting-shan, road- 

 side, alt. 2150 m.. May 23, October 1908 (No. 3213; tree 20 m. tall, 

 2 m. girth, only one seen). 



This tree is fairly common scattered through the moist woods in western Hupeh, 

 but is very rare in western Szech'uan. The bark is thick, gray, fibrous and deeply 

 fissured on old trees. The leaflets vary from 7-9 and are subopposite; the fruit 

 on some of the specimens is 7.5 cm. across. 



In Hupeh the colloquial name for this tree is Chin-chien-li. 



Franchet's section Cycloptera based on this species can hardly be maintained 

 as a distinct section. The only difference is in the great development of the wings 

 of the fruit, which become confluent so as to form one circular wing. Its origin from 

 two wings, however, is apparent in many fruits which are distinctly contracted in 

 the middle of the upper and of the lower margins. The other more important 

 character attributed by Franchet to his section Cycloptera concerning the position 

 of the staminate catkins does not exist in P. Paliurus, which has the staminate 

 catkins arranged exactly like those in the two preceding species, as flowering 

 specimens before us show. The flowering specimen on which Franchet based hia 

 description of the flowers of Cycloptera apparently belongs to the following species. 



Sect. Chlaenopterocarya Rehder and Wilson, n. sect. 



Gemmae perulis magnis imbricatis circiter 3 caducis praeditae, 

 solitariae, manifeste stipitatae; amenta mascula ex axillis foliorum 

 novellorum infra amentum femineum orientia. 



Typus sectionis: P. rhoifolia Siebold & Zuccarini. 



Pterocarya insignis Rehder & Wilson, n. spec. 



Pterocarya Paliurus Franchet in Jour, de Bat. XII. 318 (non Batalin) (1898) 

 quoad descriptionem florum et specimen floribus masculis e Tchen-k6ou-tin. 



Arbor 16-25-metralis, trunco 30-60 cm. diam.; trunci cortex 

 cinereus, laevis demum fissus; ramuli lenticellati; gemmae perulis 3, 

 oblongo-lanceolatis 2.5-3 cm. longis convolutis extus lepidotis et 

 sparse pubescentibus praeditae. Folia 7-11-foliolata, petiolo in- 

 cluso 20-45 cm. longa; foliola basin versus decrescentia, lateralia 

 opposita V. subopposita, breviter petiolulata v. subsessilia, oblonga, 

 acuta, basi oblique rotundata, 8-20 cm. longa et 3-6.5 cm. lata, ter- 

 minale petiolulatum petiolo 1.5-2.5 cm. longo, oblongo-lanceolatum v. 

 ovato-lanceolatum, acuminatum, basi attenuatum, 15-20 cm. longum 

 et 5-8 cm. latum, onmia serrulata, supra glabrescentia, subtus initio 

 floccoso-tomentosa glandulis minutis sparsis intermixtis, mox fere 

 glabra costa nervisque fulvo-tomentosis exceptis, nervis utrinsecus 

 circiter 20 subtus elevatis; petioli validi, 4.5-6 cm. longi, supra plani, 

 basi dilatati; rhachis leviter marginata ut petioli pctiolulique cinereo- 

 tomentosi. Flores non visi. Racemi fructiferi foliis longiorcs, axi- 



