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thyoides.

sissippi. h. 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 exceilent 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. 1. 2. Wangh, amer. t. 2. f. 4.

Pluk. mant. t. 345. f.1.
In deep swamps : New England to Carolina. ħ. 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.

occidentalis.

709. THUYA. Gen. pl. 1457. 1. T. ramulis ancipitibus, foliis quadrifariam imbricatis ora

to-rhombeis adpressis nudis tuberculatis, strobilis obovatis, squamis interioribus truncatis, infra apicem gibe

bosis. Willd. sp. pl. 4. p. 508. Icon. Mich. arb. 3. p. 29. 1. 3. Wangh. amer, t. 2. f.3. From Canada to the mountains of Virginia and Carolina.

h. May. v.v. The American Arbor Vile is rather scarce in the southern States, and only found on the steep banks of mountain torrents. The branches are extremely tough.

communis.

erecta. depressa.

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.
Q. About rocks, near the falls of rivers, in Canada and

the western part of New York. B. in New York, and
particularly in the province of Maine, in rocky or
gravelly situations. N. May. v. v. The Common
Juniper may probably have been originally brought
from Europe ; but the variety B., 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. h. 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 Salina.

imbricatis, tenellis acutis oppositis, caule fruticoso. B. Willd. sp. pl. 4. p. 852.

procumbens. 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

ercelsa. 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. h. 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. 5. J. foliis omnibus quadrifariam imbricatis, junioribus ova- larbadensis.

tis, senioribus acutis. Willd. sp. pl. 4. p. 851. Icon. Pluk. alm. t. 197.8.4. On the coast of Florida. Michaux. N. v. v. in Hortis.

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canadensis.

711. TAXUS. Gen. pl. 1553. 1. T. foliis linearibus distichis margine revolutis, receptaculis masculis globosis. Willd. sp. pl. 4. p. 856.

. T. baccata minor. Mich. f. amer. 2. p. 245. In shady, rocky places : Canada. Michaux.

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 tbree feet.

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integrifolia.

712. ZAMIA. Gen. pl. 1700. 1. Z. frondibus pinnatis, foliolis lanceolatis rotundato-obtu

sis 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. ħ. +. This species of palm is only

found in Florida, as I have made all inquiries to find
it in Georgia, but without success.

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XX. CRYPTOGAMIA.

I. GONOPTERIDES.

713. EQUISETUM. Recept. peltata, pentagona, spicata,

Indusium corniculatum. Stam. 4. Styl. o. Sem. l.

II. STACHYOPTERIDES. 714. LYCOPODIUM. Capsula reniformes, 1-loculares,

2-valves, polyspermæ. Sem. minutissima, pulve

riformia. 715. BERNHARDIA. Capsule 3-coccæ, 3-loculares ;

loculis superne dehiscentibus, semibivalvibus. 716. OPHIOGLOSSUM. Capsulæ nudæ, uniloculares,

in spicam articulatam disticham connatæ, 2-valves,

transverse dehiscentes. 717. BOTRYCHIUM, Capsulæ subglobosæ, rachi adu

natæ in racemum compositum dispositæ, 1-loculares: valvulis binis postice connexis transverse dehiscentibus.

III. SCHISMATOPTERIDES. 718. HYDROGLOSSUM. Spicæ unilaterales. Capsule

biseriales, latere interiore a basi ad verticem dehis; centes. Indusium squamiforme quamlibet capsulam

obtegens. 719. SCHIŽÆA. Spicæ unilaterales, flabellatæ, aggre

gatæ. Capsula vertice radiatim striatæ, subturbinatæ, poro oblongo latere hiantes. Indusium continuum

e margine inflexo spicæ formatum. 720. OSMUNDA. Capsule subglobosæ, pedicellatæ,

striatæ, semibivalves, paniculatæ. Indusium nullum. IV. FILICES.

721. ACROSTICHUM. Capsule sparsæ, discum totum

inferiorein frondis vel ejus partem occupantes. In.

dusium nullum. 722. POLYPODIUM. Sori subrotundi, sparsi. Indusia

nulla. 723. WOODSIA. Sori subrotundi, sparsi. Indusium ca

lyciforme, apertum, margine crinitum, includens

Capsulas pedicellatas. 724. ASPIDIUM. Sori subrotundi, sparsi. Indusium

umbilicatum vel uno latere dehiscens. 725. ONOCLEA. Capsulæ pariem frondis inferiorem

dense tegentes. Indusia squamiformia, in formam

baccæ conuata non dehiscentia. 726. STRUTHIOPTERIS. Capsulæ partem frondis in

feriorem dense tegentes. Indusia squamiformia,

marginalia, interius dehiscentia. 727. ASPLENIUM. Sori lineares, transversales, sparsi.

Indusia e venis lateralibus orta, costam versus de

hiscentia. 728. SCOLOPENDRIUM. Suri lineares, transversales,

sparsi. Indusium duplex, ad utrumque latus sori

situm. 729. PTERIS. Sori continui, lineares, marginales. Indu

sium e margine frondis, inflexum, interius dehiscens. 730. VITTARIA. Sori lineares, longitudinales, continui

vel in margine vel in disco frondis. Indusium duplex,

ad utrumque latus suri. 731, BLECHNUM. Sori lineares, longitudinales, conti

nui, ad utrumque latus costæ frondis. Indusium su

perficiarium, interius debiscens. 732. WOODWARDIA. Sori oblongi, distincti, recti, ad

utrumque laius costæ frondis. Indusia superficiaria,

fornicata, interius dehiscentia. 733. ADIANTUM. Sori oblongi vel subrotundi, Indusiis

membranaceis, e margine ortis, interius debiscenti

bus inserti. 734. CHEILANTHES. Sori punctiformes, discreti, mar

ginales, tecti Indusio squamiformi marginali inte

rius debiscente. 735. DICKSONIA. Sori punctiformes, marginales, sub

rotundi, distincti. Indusium duplex, alternum superficiarium, exterius dehiscens, alterum marginale interius dehiscens.

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