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158 WILSON EXPEDITION TO CHINA 



Tliis species is most nearly related to C Simonsii Baker, from which it is readily 

 distinguished by its smaller leaves, constantly fewer flowered racemes, less acu- 

 minate sepals, and by its ovoid darker red fruits; in habit and general appearance 

 the two species are very distinct. It seems also related to C. mucronata Franchet 

 from Yunnan, which differs chiefly in the lax 2-4-flowered racemes and more 

 densely hairy leaves. No. 2167 from Szech'uan has the leaves, particularly those 

 of the shoots, somewhat larger than the type and often shortly acuminate. 



Cotoneaster acutifolia Turczaninow in Bull. Soc. Nat. Mosc. V. 190 

 (1832). — Schneider, III. Handb. Lauhholzk. I. 750, fig. 421 a (1906). 



Cotoneaster acutifolia, var. pekinensis Koehne in Deutsche Dendr. 225 (1893). 

 Cotoneaster pekinensis Zabel in Mitt. Deutsche Dendr. Ges. VII. 37 (1898). 



Originally described from Chinese Mongolia, this plant was introduced from 

 the mountains near Peking by Dr. Bretschneider into the Arnold Arboretum in 

 1883. The typical form is absent from central and western China. This species 

 is not to be confounded with C. acutifolia Lindley which is C. lucida Schlechtendal, a 

 species from the Altai mountains not yet reported from China. 



Cotoneaster acutifolia, var. villosnla Rehder & Wilson, n. var. 



Cotoneaster acuminata Pritzel in Bot. Jahrb. XXIX. 385 (pro parte, non 

 Lmdley) (1900). 



Frutex 2-4-metralis ramis divaricatis; ramuli hornotini flavido- 

 villoso-strigillosi, annotini glabrescentes v. glabri, fusco-purpurei; 

 gemmae tomento flavido-cinereo obtectae. Folia decidua, ovata v. 

 oblongo-ovata, acuta v. acuminata, basi rotundata, rarius late cuneata, 

 3-6 cm. longa et 1.5-4 cm. lata, supra obscure viridia, initio sparse 

 villoso-pilosa, demum glabra v. fere glabra, subtus laxe v. interdum 

 densius subaccumbenti-villosa praesertim ad venas, utrinsecus nervis 

 4-6 ut costa supra leviter impressis subtus elevatis; petioli villosi, 

 3-5 mm. longi. Racemi laxi, 3-5-flori, bracteis bracteolisque subu- 

 latis ciliatis 3-4 mm. longis deciduis instructi, pedicelli cum pedunculo 

 circiter 1 cm. longi, subaccumbenti-villosi; calycis tubus turbinatus, 

 villoso-tomentosus, 4-5 mm. diam., dentes late triangulares, mucro- 

 nulati, 1.5 mm. longi et 2 mm. lati, purpurascentes, dorso fere glabra 

 margine dense villosuli; petala orbiculari-obovata, concava, erecta, 

 alba, roseo suffusa, 4-4.5 mm. longa, 3 mm. lata, breviter unguiculata; 

 stamina 20, sepalis longiora; carpidia 2, rarius 3, apice villosa, stylis 

 quam stamina brevioribus. Fructus pyriformis, 8-10 mm. longus, 

 apice depresso villosulus, niger; pyrenae 2, rarius 3, trigono-obovoideae, 

 5-6 mm. longae et 4-4.5 latae, ventre stylum tertiam partem infra apicem 

 gerentes, nitidae, dorso irregulariter leviter sulcatae et rugulosae, hypo- 

 stylio tertiam v. vix tertiam partem dorsi occupante nitido glabro v. 

 sparse villosulo. 



