MONOECIA. POLYANDRIA. XQ7 



339. CORYLUS. Nutt. Gen. 752. 

 [Gr. ITorys, a helmet, or cap; the fruit being invested by the calyx. Be Thds.'i 



Male, Ament imbricate- Cal. a scale. Cor. 0. Stamens about 8. 



Feu. Cal. 2 parted, lacerate. Cor 0. Styles 2. A^'ut ovate, embraced by the persistent calyx. 

 C. AMERICANA. EU- Lcavcs corchte, apuminate; calyx of the fruit large, border dilated, many cleft. 

 Fu/g-o— Hazel-nut. 



Ft. Last of March. Fr. mat. Middle of September. 



ilab. Borders of thickets: 11. Strodes; Barren ridge, &c. frequent. 4 to (3 feet high. 

 Obs. This jhrub is well known for its agreeable fruit. 



310. PI.ATANUS. Xutt. Gen. 75S. 

 [Gr. P/afys, broad; in reference (o its broad leaves,— or wide spreading brrnche.<».] 



Male, Anient globose. Cal. 0. Co;-, scarcely manifest Anthers growing round the filament. 

 Fem. -4m£n« globose. Cn/. many leaved. Cor. 0. Cajis. 1 seeded, mutronate, pappose at base. 



P. occipentalis. Mx. Arb. Tipaves roundi.>-h, angular, sublobate, dentate; branches whitish. 



Fm/^o— Button-wood. Sycamore. Plane tree. 



Fl. Last of April. Fr. mat. Last of October. 



Ilab. Creek bankft: fence-rows, &c. frequent. COto 100 feet high. 



Ob.^. Thisstately tree is ensily recognized; yet the botanical characters of the fnictificnfion arc vrry 

 obscure. The timber is often sawed into scantling, and used for various purposes,— but it is mt duvabje 

 when exposed to the wenther. The spreading branches afford a fine shade* in summer, and the tree is 

 often planted in front of farm-houses, for that object. 



341. LIQUID AMD A R. Nutt. Gen. 759. 

 [A name given on account of the aromatic gum which distils from this tree.] 



IMale, Ament conic, with a 4 leaved involucre. Cal. 0. Cor. 0. Stamens numerous. 



Fem. Anient globose, involucre 4 leaved. Cal. 1 leaved, urceolate. Cor- 0. Ca|)s. 1 celled, many seeded. 



L. STYRACiFLUA. Mx. Arb. Leaves palmate-Iobed; lobes acuminate, serrate. 



Fa/g:o— Sweet Gum. Bilsted. 



Fl Beginning of May. Fr. mat. 



Hub. Low, clay grounds: Wilmington road: not common. 40 to60 feet high. 



Obs. The leaves when slightly bruised are remarkably fragrant. This tree is not strictly a plnnt of ^this 

 immediate vicinity. It grows pretty abundantly near the Wilmington road, 10 or 12 miles south of Wes-t- 

 Cliester,— and may be f^een also along the Philadelphia road, near the 3 mile stone; but I have never met 

 with it hereabouts. Indeed, as far as I have observed, it is exclusively limited lo that tract of the middle 

 states which is marked as alluvial depositc, in Mr. Maclure's Geolog'ical map of the United States. In 

 the lower parts of New-Jersey, it is very abundant- V/hetherit is as much circumsciibed,in its range, ia 

 other poi lionis of the Union, as it seems to be in this region, I am not informed. 



342. PINUS. Nutt. Gen. 7C5. 

 [An ancient name, of obscure derivation.] 



Male, Cal. 4 leaved. Cor. 0. Stamens numerous; anthers naked. 



Fem. Cu/. a strobilus, or cone; scales 2 flowered. Cor. 0. Pisiill. Nut ahte. 



§1. Leaves soUtai~y, distinct at base. 

 P. c.4.NADEifSis. Ell. Leaves flat, denticulate, sub'distichous; cones ovate, terminal, small. 

 Synon. Abies canadensis. BIx. Arb. Vulgo— Spruce Pine. Hemlock Spruce. 



Fl. Beginning of May. /•>. mat. 



Ilab. Rocky hills, along Brandy wine: not common. 30 to 50 feet high. 



Ohs. I have only met with this along the Brandywine, at .los. Painlpr'.«i and from Sugar's ford to Down- 

 ingtown. The timber is not valuable —although frequentlj- found in lumber yards, in form of boarils, and 

 scantling. The bark is said to answer for tanning leather; and Marshall informs us that the Aborigines used 

 it to dye their splints, for baskets, of a red color. 



§2. Leaves in^'s, thebases bound foseihcr by sheaths. 

 P. RIGID.*.- Mi: Arb. Sheaths of the leaves short; cones ovate; spines of the scal.'s ref^e^p-i. 

 r'«/g:o— Pitch Pine. Yellow Pine. 



Fl. Beginning of May. Fr. mat. 



Kab. Brandywine hi!'?--, near T'^'-. Hawlcv's- nn* eoT'.Tron. 20 to 40 r?'^' high. 



