rLORA OF KORTH-"\VE STERN MEXICO. 333 
latisj foliis approsimatis coriaccis petiolatis oblongo-o'bovatis obtusis repandis basi cuneatis iiitegris 
margine cartilagineo parum rcvoluto, nervis utrinsecus 9-10 ante margincm furcatis et arcuato-ana- 
stomosantibus transverse reticnlato-venulosis, subtus prominentibus, supra dilute \dridibus nitidis gla- 
bris (in junioribus pilis stcllatis brevibus adspcrsis), subtus pallidis glaberrimisj petiolis varia longi- 
tudinc gkbris, fructibus axillaiibus sessilibus gcmiuis v. solitariis, glandc truncato-ovoidea apicc um- 
bilicato-irapressa mamilla parva termiuata stigmatibus 3 brevissimis, basi umbone uiaguo notata, 
tennissime puberula, cupula tertiam glandis partem obtegente deprcsse cyathiformi, squamis arete 
imbricatis tuborculo calloso promincntc dorso notatis adpresse ferruginco-pubcrulis. — Folia 3-5" louga, 
l^-2"lata, petioli 2-9"', glans 6' alta et in diametro, cupula 3 ' alta, 8" in diamctro. Gemmae ovatse, 
squamis ovatis obtusis ciliolatis ceterum glabris. — Coll. Scemanni, n. 1970 in Herb. Ilook. (4 fr. !). 
Sierra Madre. 
Obs. Eorma foliorum cum Q. Hartivegii, Bentb., et Q. l<sfa, Licb., convenit ; fructibus sessilibus a Q. 
lata distinguitur, glande duplo minori a Q. Hartwegii. 
623. QuERCus laxUj Lieb., Bonpl. vol. iii. p. 38; ramis tcrctibus fuscis tomontosisj ramulis an- 
gulatis suleatis villo flavescente dense obsitis; foliis coriaccis petiolatis obovatia apicc rotundatis basi 
attenuatis plus minus cordato-emarginatis plus minus obliquis repandis, nervis utrinsecus 9-1 1 cxcur- 
rentibus ssepe apiculo calloso terminatis, transverse rcticulato-vcnulosis subtus prominentibus, supra 
glaucis pilis stellatis flavcscentibus adspcrsis, subtus dcusius incauo-tomcntosis, petiolis parum com- 
pressis tomentosis, stipulis scai'iosis linearibus extus adpresse pilosis, fructibus laxe et interrupte spi- 
catis, rliaclii 2-3^-pollicari flcxuosa dense cavo-flavcscenti-tomentosa, glande glabra utrinque truncata 
subglobosa apicc umbilicato-imprcssa mamilla adpresse tomcutosa tcrminata, basi umbone magno 
notata, cupula cyathiformi dimidiam glandis partem amplectente, squamis arete imbricatis lato-lau- 
ceolatis obtusis adpresse pubesccntibus scariosis.— Folia 3-1" longa, l\-2" lata, petioli 3-5", glans 
5-6'" alta totidemque in diamctro, cupula 3' alta, 6" in diametro, stipule 3" loiigfe, \" latse. Gemmse 
ovatffi obtusee, squamis concavis extus adpresse pubenilis. Amenta maseula pollicaria, rbaclii dense 
tomcntosa, squamis involucri pilosis, antberis apice pUosis.— Coll. Sceraanni, n. 1967 in Herb. Hook. 
Sierra Madre. Species non satis nota, cum fructus latet. 
Ojjs. a Q. Sarhfcgii, Benth., differt ; spicis fructifcris multo longioribus, fructibus plus duplo miuoribus, 
indumento ramulorum foliorumque, foliis apicc magis rotundatis, etc. 
624. QuERCUS rcshwsa, Licb., Boupl. vol. iii. p. 39; ramnlis digitum minimum fere crassis m- 
gosis eicatricatis superne villo brevi ferrugineo obsitis ; foliis in apicibus ramiUoram approximatis 
crassis coriaccis brcvissime petiolatis maximis obovato-lanceolatis obtusis basi emarginatis margine 
undulatis grossc repandis, nervis utrinsecus 15-17 patulis rectis parallelis excurrentibus transverse et 
reticulato-venulosis subtus valde prominentibus, supra dilute viridibus pilis stellatis brevissimis pube- 
sccntibus, subtus dcnsius incano-pubescentibus, costa nervis vcnulis propter glandiilas numcrosas mini- 
mas resiniferas ferrugineis, petiolis brevissimis crassis pubcseentibus supra concavis ; fructibus .... 
—Folia 9-12"longa, 4-6" lata, petioli 2".— Coll. Scemauui, n. 1972 in Herb. Hook, (sterdis). Sierra 
Madre. 
Obs. Magnitudine foliorum cum Q. macro^lyXla, Nee, convenit, differt vero craasitie foliorum, forma, 
indumento, nervis crebrioribus, petiolis crassioribus. ^ 
625. QcERCUs/z/ra, Lieb., Bonpl. vol. iii. p. 39; ramulis petiolis pagina inf. foliorum pilis stel- 
latis fulvo-tomentosis, ramulis teretibus eicatricatis, foliis approximatis coriaccis petiolatis lato-obo- 
