ROSACE AE. — CRATAEGUS 183 



tt Fructus niger. 



9. Crataegus chlorosarca Maximowicz in Bull. Soc. Nat. Mosc. LIV. 20 (1879). — 

 Lange, Rev. Spec. Gen. Crataegi, 88 (1897). — Komarov in Act. Hort. Pelrop. XXII. 

 471 {Fl. Manchuriae) (1904). —Schneider, III. Handb. Laubholzk. I. 773, fig. 437 

 p-q, 438 n-o (1906). 



Saghalin to Korea and northern Japan. 



10. Crataegus dsungarica Lange, Rev. Spec. Gen. Crataegi, 43 (1897). — Schnei- 

 der, III. Handb. Laubholzk. I. 774, fig. 437 k-m, 438 g-i. (1906). 



Crataegus pinnatifida, a songarica Dippel, Handb. Laubholzk. III. 447 (1903). 

 Mespilus dsungarica Hort. apud Dieck Cat. Hort. Zoschen, 1885, 49 (nomen 

 nudum). 

 Shan-tung: August 1907, F. N. Meyer (No. 285). Eastern Siberia. 

 Meyer's specimen is without flowers or fruit, but the leaves closely resemble 

 those of C. dsungarica cultivated in the Arnold Arboretum and obtained from 

 Spilth's Nursery in Berlin. I have not seen wild specimens from Siberia. 

 Sect. 5. TOMENTOSAE Sargent in Rhodora, iii. 77 (1901). 



11. Crataegus Wilsonii Sargent. See p. 180. 



tt Nervi in loborum apicem et in sinus excurrentes. 



Sect. 6. OXYACANTHAE Zabel m Beissner, Schelle & Zabel, Handb. Laub- 

 holz.-Ben. 175 (1903). 



12. Crataegus chitaensis Sargent, n. sp. 



Frutex; ramuli tenues, tortuosi v. recti, glabri, rubri, nitidi; spinae rectae, 

 tenues, rubrae 1-1.2 cm. longae. Folia membranacea, ovata, acuminata basi trun- 

 cata v. cuneata, in petiolum decurrentia, glanduloso-serrata, supra luteo-viridia, 

 nitida, subtus palUda, glabra, in axillis nervorum sparse barbata, 3-4 cm. longa 

 et lata, profunde trilobata, lobis lateraUbus patentibus acuminatis rectis v. recurvis, 

 lobo medio majore trilobulato lobulis acuminatis rectis, nervis in loborum apicem 

 et in sinus excurrentibus; petioU tenues, glabri, biglandulosi; 1-1.5 cm. longi; 

 Btipulae fohaceae, 3-lobatae, glanduloso-serratae, persistentes. Florea ignoti. 

 Fructus subglobosus v. breviter oblongus, rubro-aurantiacus, 6-7 mm. longus, 5-6 

 mm. latus; calyx persistens, tubo angusto profundo in fundo dense tomentoso, 

 lobis reflexis rubris; pericarpium succulentum; pyrenae 3, 6 mm. longae, 3 mm. 

 latae, apice rotundatae, basi acutae, dorso obtuse-costatae, ventre profunde cavatae 

 cavis orbiculatis. 



Eastern Siberia: bottom-lands of the Chita River, Chita, C. S. Sargent, 

 August 12, 1903. 



The shape of the leaves of this plant suggests a small-leaved form of C. pinnati- 

 fida Bunge which does not appear to extend as far east as the valley of the Chita 

 River, but the cavities in the ventral faces of the nutlets separate it from that 

 species and place it with the Oxyacanthae. The shape of the leaves is so different 

 from those of all forms of the species of this group that even without the flowers I 

 do not hesitate to describe it. Geographically C. chitaensis is of considerable in- 

 terest as it is the only species of this group reported from eastern Asia. 

 Sectio incerta. 



13. Crataegus Komarovii, nov. nom. 



Crataegus tenuifolia Komarov in Act. Hort. Petrop. XVII. 435 (non Britten) 

 (1901); XXII. 470 {Fl. Manchuriae) (1904). 

 Northern Korea. 



