AMENTACE^. 317 



18 Q MicRiuxii. A large tree. Z/ftzvu obovate, uncquai[y toothed, sinu- 

 nate, obiuae at the base, tomentose beneath. Frwi'r usually \n pairs. Acorv 

 large, ovate- 



li April. Rich soils. 60-80 ft. 



19 Q Montana. A larpe tree. Z«Jtv5obo\ ate, acute, tomentose beneath, 

 coarsely footheil, tcctli indurated at the point. Acorn ovate, in a hcnuspheri- 

 cal cup. 



Tj April. In rocky places near the mountains. 30-50 ft. 



SO Q Casta.nea. A larce tree. Leaves oblonc-lanceolate, on long peti- 

 ©les, tomentose l>onoath, acuminate, coarsely toothed, teeth with indurated 

 points. Acorn uvaic, in a hemispherical cup. Chesxnuf oak 



h April — May. In rich, damp soil?. 60-70 ft. 



21 Q CuiNQU.^ri.N. A small shrub, with a smooth, slender stem. Tjeavex 

 obloiig-lanceolatc, on ^\\on petioles, coarsely toothed, glabrous when mature 

 Acorn ovate, in a hemispherical cup 



b April— May. Near the mountains. 3-4 ft. 



Genus XII CASTANEA. 



MoiiODcioiis. Sterile fiords ; aniont naked, loii^, cylitidri- 

 cal. Perianth G-lobcd. Stdweiis 5-20. Fertile florets 3, 

 witliin a nmricated involucre. Perianth 5-6-lobed. Sfj/lrs 

 6 Seed 1-3, enclosed by IIh^ involucre. 



1 C Vesca a large tree, generally with an erect tritnk and irregular 

 branches, /^flre* l:ince<iIato, oblong, mucrnnnte, serrate, plabrous when 

 (/Id. Aments of the sterile flowers axillary. Florets in clusters. Fertile 

 sjiikes short,2or 3 tot;eiiier. Stijlel. Sii<?mas numerous, /nro/wcrp spinous. 



^2 May — .Tune. Dry woo is. 60-70 ft. 



2 C Pt7.mila. a shrub, or small tree. Leaves oMong, serrate, niucronafe, 

 lomentose benrntb. Fertile flo-ets gerserally one in each involucre. Nut 

 •mall, enclosed in a .^iiinv involucre. Chivqxtapin . 



l2 May. In li,'!;t soils. 15-lK) ft. 



3C Nana. A sinall shrub. 7>«iceAf oval-lanceolate, obtuse, serrate, mu- 

 cronaie, shinmgon the upper surface, .^lightly tomentose beneath. If agrees 

 nearly with the [)rcced in <i species, except in size, 

 b May. Sandy, pine barrens. 2-4 ft. 



Genits XIII CORYLU?. 



Monoecious. Sterile florets; anient cylln irical. Scales 3- 

 cleft. StarnrnMS. Fertile florets ; ovarie-? several. Stigmas 

 2. Nut ovate .•surrounded \vit!i the enlarged coriaceous and 

 ffcaly involucre. 



1 C Americana. A small shrub, with erect, virgate branches, pubescent 

 when young. Leave:' oblong-ovate, cordate, acumiriafe, putK;Pceiit on the 

 under surface. Involucre roundish, campanulnte, with the border dilated 

 and many cleft. JN'u/ large, ovate Jlmlenut. Wild filbert, 



y^ March— April. Shady woods. 4-S ft. 

 2C RosTRATA. A small shrub. Z^otr* oblong-ovate, acuminate, slight- 

 ly cordate, on short petioles, doubly serrate, pubescent beneath. Involucre 

 somewhat globular, liirsuie, 2-parfed at the s;anmif, with incised segments, 

 b March— April. Mountains. 3-4 ft. 



Gkncs XIV. FAGUS. 



Monmcious. Sterile floret.< ; oment gloliose. Perianth 



