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thyoides.

occidentalis.

communis.

erecta.

depressa.

sissippi. . May. v. v. The Bald or Deciduous Cypress is one of the largest trees of the New Continent. The extensive use made of its wood, and other particulars respecting this interesting tree, are fully elucidated in the excellent work of the younger Michaux, who paid particular attention to the use and properties of the different American forest trees.

2. C. ramulis compressis, foliis quadrifariam imbricatis
ovatis basi tuberculatis, strobilis globulosis.-Willd.
sp. pl. 4. p. 512.

Icon. Mich. arb. 3. p. 20. t. 2. Wangh, amer. t. 2. f. 4.
Pluk. mant. t. 345. f. 1.

In deep swamps: New England to Carolina. . April,
May. v. v. The White Cedar, so well treated upon
by Michaux, is the principal tree, composing what is
called Cedar-swamps, throughout the middle and

southern States.

709. THUYA. Gen. pl. 1457.

1. T. ramulis ancipitibus, foliis quadrifariam imbricatis ovato-rhombeis adpressis nudis tuberculatis, strobilis obovatis, squamis interioribus truncatis, infra apicem gib. bosis. Willd. sp. pl. 4. p. 508.

Icon. Mich. arb. 3. p. 29. t. 3. Wangh. amer. t. 2. f. 3. From Canada to the mountains of Virginia and Carolina. h. May. v. v. The American Arbor Vitae is rather scarce in the southern States, and only found on the steep banks of mountain torrents. The branches are extremely tough.

710. JUNIPERUS. Gen. pl. 1552.

1. J. foliis ternis patentibus mucronatis bacca longioribus. Willd. sp. pl. 4. p. 853.

a. J. ramis erectis.

B. J. ramis depressis.

a. About rocks, near the falls of rivers, in Canada and
the western part of New York. 6. in New York, and
particularly in the province of Maine, in rocky or
gravelly situations. h. May. v. v.
The Common
Juniper may probably have been originally brought
from Europe; but the variety ß., or probably a distinct
species, seems to be really an original native; it does
not grow above a foot or two high, and one single

root will cover sometimes a space of from fifteen to
twenty feet in diameter.

2. J. foliis ternis basi adnatis, junioribus imbricatis, senio- virginiana. ribus patulis. Willd. sp. pl. 4. p. 863.

Icon. Mich. arb. 3. p. 42. t. 5. Wangh. amer. t. 2. f. 51.
In dry and rocky woods and fields: Province of Maine
to Georgia. . May. v. v. The Red Cedar, so
useful and durable a wood, for whose history I refer
to Michaux's work so often quoted, is as yet in great
abundance in most parts of that country; but its ex-
termination is going on so rapidly, that future inhabi-
tants will be very much at a loss, and will feel the
want of it when it is too late.

3. J. foliis oppositis obtusis medio glandulosis, quadrifariam
imbricatis, tenellis acutis oppositis, caule fruticoso.
B. Willd. sp. pl. 4. p. 852.

In the clefts of rocks: Canada. Michaux. B. Within
the Rocky-mountains. M. Lewis. h. v. s. in Herb.
Lewis. Not above six inches high.

4.J. foliis oppositis obtusiusculis, medio glandulosis, qua-
drifariam imbricatis, tenellis acutis ternis patulis, caule
arboreo. Willd. sp. pl. 4. p. 852.

J. Sabina varietas. Pall. ross. 2. p. 15.
On the banks of the waters of the Rocky-mountains.
M. Lewis. . May. v. s. in Herb. Lewis. A lofty
elegant tree. Specimens of Pallas in the Herbarium
of A. B. Lambert, Esq. seem to be the same with
those collected by Mr. Lewis.

Sabina.

procumbens.

excelsa.

5. J. foliis omnibus quadrifariam imbricatis, junioribus ova- barbadensis. tis, senioribus acutis. Willd. sp. pl. 4. p. 851.

Icon. Pluk. alm. t. 197. f. 4.

On the coast of Florida. Michaux. h. v. v. in Hortis.

711. TAXUS. Gen. pl. 1553.

1. T. foliis linearibus distichis margine revolutis, receptacu- canadensis. lis masculis globosis. Willd. sp. pl. 4. p. 856.

T. baccata minor. Mich. fl. amer. 2. p. 245.

In shady, rocky places: Canada. Michaux. On the banks of the Antietum, Maryland.

Ph. March,

April. v. v. The plants I observed on the Antietum
cover a great part of the rocky banks of that river.
Under the shade of other trees it does not rise above
two or three feet.

[blocks in formation]

integrifolia.

712. ZAMIA. Gen. pl. 1700.

1. Z. frondibus pinnatis, foliolis lanceolatis rotundato-obtusis basi attenuatis latere exteriore ad apicem serrulatis, stipite glabro subtetragono. Willd. sp. pl. 4. p. 847. Z. pumila. Sp. pl. 1659. excl. synon.

Icon. Jacq. ic. 3. t. 635.

In East Florida. h. +. This species of palm is only found in Florida, as I have made all inquiries to find it in Georgia, but without success.

XX. CRYPTOGAMIA.

1. GONOPTERIDES.

713. EQUISETUM. Recept. peltata, pentagona, spicata. Indusium corniculatum. Stam. 4. Styl. O. Sem. 1.

II. STACHYOPTERIDES.

714. LYCOPODIUM. Capsule reniformes, 1-loculares, 2-valves, polysperma. Sem. minutissima, pulve

riformia.

715. BERNHARDIA. Capsule 3-coccæ, 3-loculares; loculis superne dehiscentibus, semibivalvibus. 716. OPHIOGLOSSUM. Capsule nude, uniloculares, in spicam articulatam disticham connatæ, 2-valves, transverse dehiscentes.

717. BOTRYCHIUM. Capsule subglobosa, rachi adunatæ in racemum compositum dispositæ, 1-loculares: valvulis binis postice connexis transverse dehiscentibus.

III. SCHISMATOPTERIDES.

718. HYDROGLOSSUM. Spice unilaterales. Capsule biseriales, latere interiore a basi ad verticem debis centes. Indusium squamiforme quamlibet capsulam obtegens.

719. SCHIZÆA. Spice unilaterales, flabellatæ, aggregatæ. Capsule vertice radiatim striatæ, subturbinatæ, poro oblongo latere hiantes. Indusium continuum e margine inflexo spicæ formatum.

720. OSMUNDA. Capsule subglobosa, pedicellatæ striatæ, semibivalves, paniculatæ. Indusium nullum.

IV. FILICES.

721. ACROSTICHUM. Capsulæ sparse, discum totum inferiorem frondis vel ejus partem occupantes. In

dusium nullum.

722. POLYPODIUM. Sori subrotundi, sparsi. Indusia nulla.

723. WOODSIA. Sori subrotundi, sparsi. Indusium calyciforme, apertum, margine crinitum, includens Capsulas pedicellatas.

724. ASPIDIUM. Sori subrotundi, sparsi. Indusium

umbilicatum vel uno latere dehiscens.

725. ONOCLEA. Capsulæ partem frondis inferiorem dense tegentes. Indusia squamiformia, in formam baccæ connata non dehiscentia.

726. STRUTHIOPTERIS. Capsulæ partem frondis inferiorem dense tegentes. Indusia squamiformia, marginalia, interius dehiscentia.

727. ASPLENIUM. Sori lineares, transversales, sparsi. Indusia e venis lateralibus orta, costam versus dehiscentia.

728. SCOLOPENDRIUM. Sori lineares, transversales, sparsi. Indusium duplex, ad utrumque latus sori situm.

729. PTERIS. Sori continui, lineares, marginales. Indusium e margine froudis, inflexum, interius dehiscens. 730. VITTARIA. Sori lineares, longitudinales, continui vel in margine vel in disco frondis. Indusium duplex, ad utrumque latus sori.

731. BLECHNUM. Sori lineares, longitudinales, continui, ad utrumque latus costa frondis. Indusium superficiarium, interius dehiscens.

732. WOODWARDIA. Sori oblongi, distincti, recti, ad utrumque latus costa frondis. Indusia superficiaria, fornicata, interius dehiscentia.

733. ADIANTUM. Sori oblongi vel subrotundi, Indusiis membranaceis, e margine ortis, interius dehiscentibus inserti.

734. CHEILANTHES. Sori punctiformes, discreti, marginales, tecti Indusio squamiformi marginali interius debiscente.

735. DICKSONIA. Sori punctiformes, marginales, subrotundi, distincti. Indusium duplex, alternum superficiarium, exterius dehiscens, alterum marginale interius dehiscens.

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