114 JOURNAL OF THE ARNOLD ARBORETUM [vol. iv 



World species, but in regard to the second statement I may point to the 

 fact that Janczewski in his monograph of the genus and in the supple- 

 ments to it describes more than 25 different hybrids, many of them having 

 originated spontaneously in gardens. 



Cotoneaster Franchetii Bois var. cinerascens, var. nov. 



A typo recedit praecipue habitu robustiore foliis majoribus ad 4 

 longis plerisque elliptico-ovatis et acuminatis saepius diametro majore 

 infra medium, subtus laxius villoso-tomentosis colore vix albido sed cinereo 

 vel virescente, corymbis in apice ramulorum elongatorum ad 5 cm. longis 

 niultifloris. 



Specimen's examined: Weed Landscape Nursery, Beaverton, Oregon, H. E. 

 Weed y June 1922 and September 20, 1921 (received as Cotoneaster sp. Schneider 

 No. 309 from the Arnold Arboretum). 



This variety looks at first glance very distinct from typical C. Franchetii 

 and bears some resemblance in its more vigorous upright habit and in the 

 larger usually acuminate leaves less densely tomentose and less white on 

 their under surface to C. foveolata Rehd. & Wils., but in flower and fruit it 

 agrees exactly with typical C. Franchetii except that the inflorescence is 

 generally larger and borne on longer branchlets. It was raised at the 

 Arnold Arboretum from seed received in 1915 from Mr. C. Schneider under 

 No. 309 collected in Yunnan or southwestern Szechuan; the plants did 

 not prove very hardy in this Arboretum and did not reach sufficient size 

 to flower but plants sent to Oregon are growing well as the flowering and 

 fruiting specimens which we have received show. Among Schneider's 



herbarium material of C. Franchetii of which we have Nos. 1761 and 3415 

 from Yunnan and 3491 from southern Szechuan there is no specimen 

 which agrees with the new variety. 



Pyracantha crenulata var kansuensis, var nov. 



A typo recedit praecique foliis minoribus supra medium tantum sparsius 

 crenato-serrulatis, corymbis sub fructu leviter adpresse villosulis, fructibus 

 minoribus depresso-subglobosis. — Folia anguste oblonga vel oblanceolata, 

 apice rotundata, obtusa vel interdum acutiuscula, 1-2.5 cm. longa et 

 4-8 mm. lata, minora elliptica vel anguste clliptica, 6-10 mm. longa ; petioli 

 0.5-2 mm. longi, glabri; corymbi vix 2 cm. diam., fructus 3-5 gcrentes 

 (sed in speciminibus spontaneis ut videtur majores et pluriflori); fructus 

 circiter 5 mm. diam., scarlatini. 



China. Kansu, near Yan-pu-ko, F. N. Meyer, Xo. 17S4 (S. P. I. No. 40730; 

 October 6, 11)14. 



Cultivated: plants raised from seed distributed by the Dept. of Agriculture 

 under No. 40736: Arnold Arboretum, A. Rehder, October 2, 1917 (sterile); Chico, 

 Seed and Plant Introduction Station, Peter Bisset, September 14, 1919 (sterile); 

 Santa Barbara, E. 0. Or pet, November 29, 1922 (type). 



This variety seems nearest to P. crenulata var. Rogersiana A. B. Jacks., 

 but differs from it and from the type chiefly in the pubescent corymb, 

 a character by which it approaches P. coccinea Roem., but that species 

 has larger acute more sharply serrulate leaves of different shape, slenderer 



