200 WILSON EXPEDITION TO CHINA 
numerous long antler-like spines covering the ripe involucre. It is perhaps most 
closely related to Castanopsis tribuloides, var. longispina King, which is a very much 
more glabrous plant, with leaves inclined to be broadest below the middle and 
with fewer, less prominent secondary nerves; the spines on the involucre are 
straighter and branch from near the base, and the ripe gland is glabrous. The 
whole appearance of specimens of the two plants is very different. The typical C. 
tribuloides De Candolle and its other varieties are much farther removed from this 
new species. Henry's specimen differs in the leaves which are from 15 to 18 cm. 
long, cuneate at the base and slightly more prominently toothed, with petioles 
from 0.8 to 1.5 cm. long, but we have no hesitation in referring it to our new species. 
C. ceratacantha is a handsome evergreen tree and is fairly common in woods at 
low altitude in the little known region between Mt. Omei, Mt. Wa and Mt. Wa-wu 
in western Szech’uan. z 
Pictures of this tree will be found under Nos. 314, 322 of the collection of Wil- 
son’s photographs and also in his Vegetation of Western China, No. 150. 
Castanopsis platyacantha Rehder & Wilson, n. sp. ; 
Arbor 6-25-metralis, trunco 1-3 m. in circuitu metiente, cortice 
cinereo in lamellas tenues irregulares fisso; rami validi patentes; 
ramuli glabri, atropurpurei; gemmae ovato-oblongae, rarius ovatae, 
compressae, acutiusculi, 0.5-1.3 em. longae perulis biserialibus scari- 
osis late ovatis v. ovatis, pallide olivaceis nitidulis glabris ciliolatis. 
Folia persistentia, coriacea, elliptico-lanceolata v. elliptico-oblonga, 
rarius elliptica, subito acuminata, basi obliqua, late cuneata v. fere 
rotundata, supra medium remote paucidentata, rarius integra V. fere 
integra, 8-16 cm. longa et 2.5-6, rarius ad 7 cm. lata, supra intense 
viridia, glabra, nitida, subtus tomento crustaceo fulvescente demum 
albo-cinereo costa media glabra excepta dense obtecta, costa media 
supra leviter elevata v. plana, subtus elevata, nervis utrinsecus 8-10 
supra obsoletis subtus leviter elevatis plerumque ante marginem anasto- 
mosantibus; petioli erassiuseuli, 8-10 mm. longi, glabri. Amenta 
mascula in axillis foliorum v. bractearum ad basin innovationum soli- 
taria rhachis glabra stricta, angulata, 7-16 em. longa; flores fasciculati; 
perianthii lobi anguste ovata v. obovata, concava, 1.5-2 mm. longi 
extus glabri, intus villosi; stamina exserta, 4.5-5 mm. longa, filamentis 
glabris filiformibus, antheris globosis; ovarii rudimentum dense vil- 
losum. Spicae fructiferae axillares in parte superiore ramulorum, 5-6 
em. longae; fructus biennes, sessiles, subglobosi v. late ovoidei; involu- 
era dense echinata, spinis fasciculatis 3-5 mm. longis in seriebus con- 
centricis dispositis triangularibus compressis rarius fere subulatis apice 
pungente glabro, ceterum ut involuerum cinereo-tomentosis; glandes 
1-3, plerumque 1, late conico-ovoideae apiculata, 1.2-1.5 em. altae, 
1.2-1.8 em. diam., pallide brunneae, puberulae, maculo basali latis- 
simo, interdum fere dimidiam glandem obtegente. 
