370 EAST-ASIATIC CORYLACE^. 



minulo stylos exserente perviam ad latus vel ssGpissime juxta ipsam 

 basin prope stipitem rejicit* in series nunc verticales nunc trans- 

 versas nunc curvatas continuas v. interruptas dispositis armatis 

 maturitate (irregulariter ut videtur) dehiscentibus, nucibus tribus 

 plano-convexis trigonis v. mutua pressione complanatis apice acutis 

 pericarpio osseo crasso hilo carpico maximo pallido glaberrimo plus 

 quam duas tertias superficiei occupants parte libera nucis areain sub- 

 rotundam juxta verticem complente brunnea tenuiter sericea, cutyle- 

 donibus intricato-plicatis. 



In insula Phu kok (lat. bor. 10°, long. or. 104°) sinus Siamensis, 

 juxta litora Cambodiae, d. 17 Januar., 1874, collegit cL L. Pierre 

 (Herb, propr., no. 19084). 



Allied to the preceding, but perfectly distinct botb in foliage, fruit, 

 and seed. The unusual size of the hilum carpicum is very remark- 

 able. Mr. Pierre notes of its timber — " bois tres-dur, tres-resistant, 

 se gataut difficilement." Although I have retained above the sectional 

 name of CalIa;ocarpiis, merely to point out affinity, it is obvious that it 

 has no claim to distinction. The late Prof. Miqueif assigned erroneously 

 both to it and Castanopsis tortuous cotyledons : in reality nearly 

 all Castanopses have plano-convex cotyledons, but of those above 

 described one Eucastanopsis and one Callmocarpus have them deeply 

 lobed. He further ascribed to Castanopsis a coriaceous involucre 

 armed with acif;ular spines, and splitting into four valves ; and to 

 Callceocarpus a thick woody one, covered with short, blunt processes, 

 and splitting irregularly, not valvularly. But C. tihetana and several 

 other Eiicastanopses have a quite woody involucre, and whilst that of 

 C. Lamontii is excessively thick, in C. Pierrei it is no thicker than in 

 C. conciyina, A. DC. That of C. Lamontii splits with perfect regu- 

 larity, whilst I expect C. Falconeri has quite indehiscent fruit. The 

 wide flattened aculei of C. trisperma^ Scheff. ! and especially C. 

 costata, Q. hancana, Scheff. ! are certainly more like the shorter pun- 

 gent ones of C. rhamnifolia, Miq. ! (which Mr. Kurz has identified with 

 Quercus divaricata, Lindl.) tiian they are to the needle-shaped prickles 

 of C. hystrix, C. indica, C. Tungurrut, &c. ; and C. echidnocarpa 

 forms an equally near a,pproach to Miquel's genus. Had the original 

 C. sumatrana and C. Lamontii alone been known, the limitation of the 

 armature to the angles might perhaps have justified the retention of 

 the group ; but with those we now possess this seems to me im- 

 possible. Some years since, following in this the erroneous indication 

 of Miquel, I suggested^ the transfer of Q. fissa, Champ., to Castanea, 

 relying on convolute cotyledons as the real distinction of the latter 

 group. But M. A. De Candolle insisted on the unimportance of this 

 character ; and a better practical acquaintance with the order long 

 since made me acquiesce in his judgment. A good deal of attention 

 devoted at intervals during the last few years to Corylacf-m has led me 

 to set a very high value on the researches of the late Prof. Oersted ; 

 and I repeat emphatically the conviction I have more than once ex- 

 pressed in these pages, that the choice lies between recognising his 



* A similar displacement of the structural apex in C rhamnifolia is noticed 

 by Miquel. (Prodr. Fl. Sumatr., 353.) 

 t Prodr. Fl. Sumati., 354. 

 X Aun. Sc. Nat., 4^ ser., xviii., 231 ; Seem. Journ. Bot., i., 173. 



