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Euerythrobalanus Microcarpea Henaenocarpaea 



1. Folia varie divisa, pinnatifida v. pinnatiloba. 

 Qu. rubra Qu. falcata 



sonomensis ilicifolia 



coccinea nigra 



tinctoria aquatica 



Catesbyi 



palustris 



georgiana 



2. folia indivisa, latiora,obovata, dentata, basicordata, subtus tomentosa. 

 calophylla castanea crassilolia 

 brachystacbys Orizabae fulva 



floccosa omissa 



splendens 



flavida 



scytophylla 



3. folia indivisa, angustiora, ovatolanceolata, dentata, subtus glabra v. 

 glabrescentia. 



Skinneri lanceolata Sartorii 



xalapensis laurina barbinervis 



grandis nitens 



ferra Wislizeni 



Crotesii acutifolia 



4. folia % indivisa, oblonga v. elliptica, integerrima, saepius glabra. 

 nectandraefolia depressa tlapuxabuensis 

 Sororia linguaefolia Seemanni 

 elliptica totutlensis Giesebrechti 

 crassipes imbricaria salicifolia 

 dysopbylla phellos oajacana 



mexicana Benthami. 



cinerea 



rugulosa 



confertifolia 

 Sectio 4. Lepidobalanoides: fructus maturatio annua; ovula 

 abortiva circa basin seminis affixa; folia integerrima, sernpervirentia: 

 Qu. Humboldti Bonpl Neu Granada, Lindeni DC ebda, tolimensis Bonpl 

 ebda, citrifolia Liebm Costarica, granulata Liebm ebda, costaricensis 

 Liebra ebda. 



Subgenus Cerris: styli lineares apice subulati, erecti v. reflexi; 

 cupulae squamae, saltem superiores, lineares patulae v. reflexae; glans 

 ovoidea v. ellipsoidea, flavescentigrisea, maturatione bienni, pericarpio 

 tenui, dissepimenti vestiguo nullo; ovula abortiva quinque circa basin 

 seminis affixa; folio ovato v. oblonga, grosse serrata, serraturis brevis- 

 sime mucronatis; costae laterales parallelae, marginem attingentes; co- 

 stulae numerosae subparallelae ; tomentum stellatum densum, breve, 

 superficiem inferiorem foliorum tegit. — Sectiones: a. cupulae squamae 

 lineares reflexae; 1. folia grosse et inaequaliter dentatoserrata v. pin- 



