BOTAI^IOAL GAZETTE. 15 



The following is believed to be a more correct enumeration and more natural 

 arrangement of our oaks : 



I. LEPIDOBALANUS, Endl. 



A. Leucobalanus. . 



*Maturatio annua. 



f Folia decidua. 

 Q. alba, lobnin (fruticosa), Gnrri/n;i((,, xtellifd, macrnMrpa, lyr ita^hicjolor {Mich 

 auxii), Priivus, Mulileiihergii {prinoides), Dougla.-iii, umlu'.iUa, [pwigens.). 



ffFolia persistentia. 

 Q. obloiiffifolia, dm/iosa, reticulata, vire?is. 



**Maturatio biennis. 

 Q. rlirysolepis [eacciiiiifolia, Palmeri), tomentallii. 

 B. Mei-anobalanus. 



*Maturatio annua, folia persistentia. 

 Q. Emory i, agrifoUa^inunila, hypulcmui. 

 **]VIaturatio biennis. 



f Folia decidua. 

 Q. rubra, coccinea {tlnctoria,) Soiiuiiieihiils,fal,ca,la, Gateshmi, ilicifoliu, palustris, Georg- 

 iana, aquatica, laurifoUa, nigra, ciii.erca, iinhricaria, Phelloa. 



jfFoIia persistentia. 

 Q. Wislizeni, myrt/folia. 



II. ANDKOaYNE, A. DC. 

 Q. dennijiora. 



The names in parentheses designate sub-sj)ecics. 



IVie Am-'-ricau .Junipers of ihr. sectii»iS(obi)m, by Dr. Geo. Engelmann. — The author 

 treats the subject in the following order: the barit, the wood, the leaves, the flowers, 

 the seeds, and the geographical distribution. Tlie nine American species are then 

 arranged in the following order: 



I. Sabin.e, witli larger, reddish-glaucous, tibrous, dry, sweetish berries. 

 a. Seeds single or few; leaves fringed or denticulate. 



a. Cotyledons 4-6. 

 (1.) J. Galifornirn. 



b. Cotyledons 2 . 

 (2.) /. Mexicana. 



B. Seeds numerous, 4-12; leaves slightly denticulate. 

 (8.) ./. parluiphlma, and (4.) -/. flacrida . 



II. Sabin.e, with smaller, biuisli-black (rarely brown) pulpy berries, of resinous 



taste. 



a. Leaves clliate or denticulate. 



(5.) J. occideiitalis, (6.) ./. conjungens, and (7.) /. tctragona. 



B. Leaves entire or nearly so. 



(7.) /. Sabiiui, (8.) J. Virgiitiinia, and (9.) -/. Bermudiana, 



The Flowering of Agave Shawii, by Dr. Geo. ^'^ngelmann. 



Ferns of Xorth Am-rinf, by Prof. Daniel C. Eaton. — Although late it is not too late 

 to notice Part I. of tliis magnificent work. The plates and press work are as fine as 

 can be made even in these d:iys of superb printing. Four species are illustrated and 

 fully described. Tliey are Lygod'mm jxilnnftuni, Swartz., Cheiliiiithes cestita^ Swartz, 

 G. Goojyercp, D. C. Eaton, and Aspleiiium aerratuni, Linn. There is also a synopsis 

 of the species of Cheilaiithes known to occur in the United States. All botanists 

 who are at all able will be amply repaid by subscribing for thiswoik. The Parts are 

 very cheap at fl.OO each. Address the Naturalists' Agency, Salem, Mass. 



