206 WILSON EXPEDITION TO CHINA 



bracteae 4-6 mm. longae; pedicelli 6-12 mm. longi; sepala interdum 

 utrinque denticula unica munita; petala 5 mm. longa, 3.5 mm. lata, 

 alba; stamina ad 6.5 mm. longa; pistillum 11 mm. longum. 



Western Hupeh: Fang Hsien, woodlands, rare!, alt. 2000 m.. 

 May 15, 1907 (No. 182, as to flowering branches; the fruiting branches 

 belong to the totally different P. Rossiana Koehne. 



The whole appearance of this plant, particularly the shape of the cupula and 

 of the sepals agrees well with P. litigiosa Schneider. The differences in the floral 

 parts might be explained by the fact that the flowers of the specimens before me 

 are just beginning to open; the pedicels, petals and stamens, therefore, may not 

 have attained their full length. 



Pnmus involucrata Koehne, n. sp. 



Arbor 3-5-metralis; ramuli novelli glabri, annotini vetustioresque 

 cinerei; gemmae quas vidi 1 mm. longae, rotundatae, obtusae, glabrae. 

 Stipulae caducae; petioU 10-12 mm. longi, glabri, glandulis 1-2 prope 

 apicem insertis, plerumque latis planis; lamina e basi rotundata late 

 ovata, 7.5-9.5 cm. longa, 4-5.2 cm. lata, longiuscule subito acuminata, 

 inaequaliter v. hinc inde duplicato-serrata, dentibus late triangularibus 

 acutis V. subcuspidatis, glandula parva punctiformi terminatis, supra 

 glabra, subtus in nervorum axillis barbulata ceterum glabra, nervis 

 utrinsecus 9-11, subtus manifeste pallidior quam supra, papyracea. 

 Involucra sub anthesi arete adhaerentia, circiter 8-10 mm. longa lata- 

 que, ante fructificationem decidua; pedunculus sub anthesi nullus, 

 sub fructibus 3-5 mm. longus; umbellae (2-)3-5-florae, in ramulis 

 brevibus confertissimae, praecoces; bracteae absconditae; pedicelli 

 9-10 mm. longi inclusi v. subinclusi, fructiferi ad 19 mm. longi, dense 

 villosi; cupula 5 mm. longa, breviter latiuscule campanulata, usque 

 ad medium villosa superne glabra; sepala reflexa, ovata obtusa, 3 

 mm. longa, integra, ciliolata ceterum glabra; petala orbicularia, 11 

 mm. longa lataque, bilobo-emarginata, sinu lato triangulari, rosea. 

 Stamina 43, petalis triente breviora, ad 7 mm. longa; pistillum 12 mm. 

 longum, stylus stamina aequans glaberrimus. Drupa ovali-globosa, 

 10 mm. longa, 3 mm. diam., rubra; putamen subglobosum, 7.2:6.5:5.2 

 mm., sulcis panels obsoletis obliquis juxta carinam planam exsculptum. 



Western Hupeh: cultivated around Ichang, up to 1000 m. alt., 

 March and May 1907 (No. i). 



The specimens determined by Pampanini (in Nuov. Giom. Bot. Ital. XVII. 293 

 [1910]; XVIII. 122 [1911]) as P. hirtipes Hemsley, namely Silvestri's No. 973 from 

 Hupeh, Pa-tao-ho, alt. 1000 m., and Nos. 3024 and 3024* from Ou-pan-chan, alt. 

 above 600 m., may belong to P. involucrata, if No. 973 is not to be referred to 

 P. glabra Koehne. 



