FAGACEAE. — QUERCUS 223 



Hupeh Q. spinosa grows always on limestone, whereas the region of the Chino- 

 Thibetan borderland, where Q. aquifolioides grows, is composed of granite, gneiss and 

 mud shales. No. 4372 differs slightly from the t^-pe in having the scales of the 

 cup more uniformly linear-lanceolate, more loosely appressed and more decidedly 

 villose. 



A picture of this Oak will be found under No. 141 of the collection of Wilson's 

 photographs and also in his Vegetation of Western China, No. 435. 



We have preferred to coin a new name for this species instead of elevating the 

 following variety to specific rank, as there exists an older, though not valid, ho- 

 monym, namely, Q. ri/fescens, Hooker f. & Thomson, a synonym of Castanopsis 

 hystrix A. De Candolle. 



Quercus aquifolioides, var, rufescens Rehder & Wilson, n. comb. ~ 



Querctis Ilex, var. rufescens Franchet in Jour, de Bot. XIII. 151 (1899). — Skan 

 in Jour. Linn. Soc. XXVI. 516 (1899). — Koidzumi in Tokyo Bot. Mag. 

 XXVI. 161 (1912). 



Quercus semicarpifolia, var. rufescens Schottky in Bot. Jahrb. XLVII. 642 

 (1912). 



Western Szech'uan: Tachien-Iu, alpine moorlands, alt. 2600- 

 4600 m., June and September 1908 (Nos. 3626, 4372, seeds only; shrub 

 0.3-3 m., forming scrub). 



This variety differs from the type in its pubescence, which is pale gray and loosely 

 matted on the young leaves and yellowish or brownish gray and loose on the old 

 leaves, from which it often disappears entirely; the cup scales are also rather thicker, 

 not so long and more densely villose than in the type species. The name rufescens 

 is more applicable to the type than to this variety, but Franchet's description is 

 clearly of this plant. We have not seen any of the specimens referred by Franchet 

 to this variety, but ours agree exactly with his description and are from the same 

 locality as several of his specimens. 



This is a common Scrub Oak on the uplands and moors around Tachien-lu and 

 regions to the north and west. When mixed with allied species it covers vast areas. 

 A picture of this Oak will be found under No. 225 of the collection of Wilson's 

 photographs and also in his Vegetation of Western China, No. 436. 



Quercus Gilliana Rehder & Wilson, n. sp. 



Arbor parva, 5-8-metralis v. frutex ramosissimus 0.25-1.5 m. 

 altus; ramuli purpureo-brunnei, fasciculato-pilosi, annotini tarde 

 glabrescentes. Folia coriacea, per duos annos persistentia, subsessilia, 

 ovalia v. obovata, apice rotundata spinoso-mucronata, basi subcordata 

 V. leviter auriculata, sinuoso-spinoso-dentata, 3-5 cm. longa et 2-3.5 

 cm. lata, sub maturitate utrinque glabra, costa media utrinque basin 

 versus interdum fasciculato-pilosa excepta, concoloria v. subtus fus- 

 cescentia, nervis utrinsecus 5-6 ante marginem furcatis supra leviter 

 subtus manifeste elevatis ut costa; petioli 1-3 mm. longi, glabrescentes; 

 stipulae erectae, subulatae, 4-5 mm. longae, persistentes. Fructus 



