477 



patulis squarrosis ferrugineo - villosis , inferioribus majoribus 

 latioribus laxe imbricalis, glande conica acuta basi umbone 

 maximo poslice valde convexo instructa nilidissima. 



Arbor mediocris pulcherrima, folia 6 — 7" longa, 2£— 3^" 

 lata, petioli 5-9'", pedunculi 2'", cupula 12— 15'" alta, 15-18'" 

 in diametro, glans l! 2 " alta 14 — 16'" in diametro. 



Mexico, in quercctis circa S. Bartolonié inter Huatusco et 

 Jalapa alt. 4500' Dp. Vera Cruz. 



Species affinis Q. insigni Mart. et Gal., diversa foliis cras- 

 sioribus rugosis, fructu minori, cupula squarrosa, glande conica 

 magis acuta umboneque valde convexo. 



19. Quercus Sartorii Liebm.: foliis membranaceis longe 

 petiolalis oblongo-lanceolatis acuminatis acutis basi cuneatis 

 inæqualibus ultra medium sinualo -dentatis, dentibus brevibus 

 aristatis, utrinque glabris, peliolis glabris supra pianis sulcatis; 

 fructibus subsessilibus v. brevipedunculatis solitariis v. geminis, 

 cupula bemisphærica, glande globoso-ovoidea obtusa apiculata. 



Arbor excelsa, folia 5—6" longa, \\ — \%" lata, petioli 

 li— \\" longi, cupula 2- 3"' alta 4'" in diametro, glans 4— 5'" 

 alta 4"' in diametro. 



Mexico, in sylvis decliv. orient. Cordill. Dp. Vera Cruz, 

 circa Totutla alt. 4000'. 



Species affinis 0- jalapensi HB., differt foliis subtus glaber- 

 rimis minoribus, fructibus multoties minoribus. 



20. Quercus commutata Liebm.: foliis coriaceis brevi- 

 peliolatis lanceolatis acuminatis mucronatis basi cuneatis inte- 

 gerrimis v. antrorsum sinuato-dentatis, dentibus aristatis, utrinque 

 glaberrimis, petiolis marginatis pulverulentis; fructibus solitariis 

 geminisve in rhachi brevissima crassa alternis, cupula depresse 

 pateriformi, glande subglobosa v. ovoidea apiculata v. obtusa 

 glabra. 



Arbor 50-70', folia 1—34" longa, 5—10'" lata, petioli 



2-4", rhachis 1—4'", cupula 3"' alta 6'" in diametro, glans 



5'" alta et in diametro. 



12* 



