ROSACEAE. — 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. Petrop. XXII. 
471 (Fl. Manchuriae) (1904). — Schneider, Ill. 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, Ill. Handb. Laubholzk. Y. 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. Züschen, 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 
Spüth'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 in 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 em. longae. Folia membranacea, ovata, acuminata basi trun- 
cata v. cuneata, in petiolum decurrentia, glanduloso-serrata, supra luteo-viridia, 
nitida, subtus pallida, glabra, in axillis nervorum sparse barbata, 3-4 cm. longa 
et lata, profunde trilobata, lobis lateralibus patentibus acuminatis rectis v. recurvis, 
lobo medio majore trilobulato lobulis acuminatis rectis, nervis in loborum apicem 
et in sinus excurrentibus; petioli tenues, glabri, biglandulosi; 1-1.5 cm. longi; 
Stipulae foliaceae, 3-lobatae, glanduloso-serratae, persistentes. Flores ignoti. 
Fructus subglobosus v. breviter oblongus, rubro-aurantiacus, 6-7 mm. longus, 5-6 
mm. latus; ealyx 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, 
— ÀÁ ed form of C. pinnati- 
e shape of the leaves of this plant suggests a small-leaved form of C. pinna 
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. A 
Crataegus tenuifolia Komarov in Act. Hort. Petrop. XVII. 435 (non Britton) 
(1901); XXII. 470 (Fl. Manchuriae) (1904). 
Northern Korea. 
