168 WILSON EXPEDITION TO CHINA 



Ho near Mon-kong Ting, alt. 2300-3300 m., June 1908 (No. 2169). 

 Shensi: Tai-pei-shan, 1901, W. Purdom. 



In the absence of ripe fruits the affinity of this species remains doubtful. It 

 seems to be most closely related to the black-fruited C. melanocarpa Loddiges, which 

 differs chiefly in its broader and larger, differently shaped leaves, often narrowed 

 at the base, sparingly hairy on the upper surface while young and with a looser 

 whitish tomentum beneath. Specimens of the forms from the Altai mountains 

 usually referred to C. melanocarpa resemble our species in their smaller leaves, 

 which, however, are hairy on their upper surface while young, oval in outline and 

 generally broadly cuneate at the base. Cotoneaster gracilis also shows some re- 

 semblance to the red-fruited C. integerrima Medikus, which is easily distinguished 

 by its larger acute or acutish leaves, smaller and shorter racemes, larger flowers 

 and stouter branches. Cotoneaster Zabelii .Schneider differs more widely in its 

 densely villous calyx and the larger leaves, hairy on their upper surface at least 

 while young. — The specimen from western Szech'uan (No. 2169) has smaller 

 leaves than the type and fewer flowers in shorter racemes, while the specimens 

 from Shensi are almost intermediate between the Hupeh and the Szech'uan 

 specimens. 



Sect. 2. CHAENOPETALUM Koehne. 



Cotoneaster racemiflora K. Koch, Dendr. 1. 170 (1869). — Schneider, 

 III. Handb. Lauhholzk. I. 754, fig. 424 e'-k (1906). 



Mespilns racemiflora Desfontames, Cat. Hort. Paris, ed. 3, 409 (1829). 

 Cotoneaster Fontanesii Spach, Hist. Veg. II. 77. (1834). — Briot in Rev. Hort. 



1869, 33, t. 

 Cotoneaster mimmularia Fischer & Meyer in Ind. Sem. Hort. Petrop. II. 31. 

 (1835). — Aitchison in Trans. Linn. Soc. Bot. III. 64, t. 9 (1888). 



Cotoneaster Fontanesii, a Desfontainii Regel in Act. Hort. Petrop. II. 312. (1873). 

 Cotoneaster numularia, /3 racemiflora Wenzig in Linnaea, XXXVIII. 189 (1874). 

 The type does not occur in China, but there are two well-marked varieties in 

 Hupeh and western Szech'uan. 



Cotoneaster racemiflora, var. soongorica Schneider, III. Handb. 

 Laubholzk. I. 754, fig. 424 i (1906). 



Cotoneaster Nummularia Trautvetter in Bull. Soc. Nat. Mosc. XXXIII. pt. I. 



531 {Enum. PI. Songor. Schrenk.) (1860). 

 Cotoneaster nummularia, var. soongoricum [sic] Regel & Herder in Bull. Soc. 



Nat. Mosc. XXXIX. pt. II. 58 (PL Semenov. No. 381) (1866). 

 Cotoneaster Fontanesii, var. soongorica Regel in Act. Hort. Petrop. II. 313 



(1873). 



Western Szech'uan: Tachien-lu, alt. 2600-3000 m., bush 2.5 m. 

 tall, June and October 1908 (No. 1317); valley of Hsao-chin Ho near 

 Monkong Ting, alt. 2300-3000 m., June 1908 (Nos. 2166, 2168; bush 

 2-3 m. tall); Min Valley near Sung-pan Ting, alt. 2600 m., Septem- 

 ber 1910 (No. 4015^ bush 1-2 m. tall); wdthout locality, alt. 3900 m., 

 arid places, June 1904 (Veitch Exped. No. 3514; bush 2 m. tall). 



