166 Prof. Don’s Descriptions of two new Genera of the 
hemisphere. A species of Juniperus occurs at Cape Horn, and one Species of 
Thuja in Chile, and another at the Straits of Magellan; while Callitris, a 
genus containing more than twenty species natives of New Holland and Van 
Diemen’s Land, has a solitary species on Mount Atlas in 35° North latitude. 
CRYPTOMERIA. 
Ord. Nat. Cox IRR. Linn. Juss. 
Trib. II. Cupressinem. Rich. 
Character Essentialis. 
Amenta mascula spicata. Squame antheriferæ rotundatæ, adpressè imbricatæ, 
sessiles. Antherarum thecæ 5, connate! basi squamarum omnino adnate, 
anticé foramine amplo dehiscentes. Strohili solitarii, globosi, squarrosi : 
squamis & pericarpio 3—6-dentato bracteüque lanceolatà acuminatá in- 
fernè concretis compositis. Semina 4 v. 5, erecta, inæquilateri-oblonga, 
margine anguste alata. 
Character Generalis. 
FLORES monoici. 
Masc. Amenta plurima, ovato-oblonga, obtusa, sessilia, braeteata, unguicu- 
laria, in spicam terminalem vix uncialem aggregata. Bracteæ subulatæ, 
rigidæ, patulæ, amento parüm breviores. Squamæ antheriferæ sessiles, 
brevissimæ, rotundatæ, undique adpressè imbricatze, ferrugineæ, hinc 
convexæ, levissima, margine angustè membranaceæ ; extimæ obsoletè 
carinatæ, subapiculatæ. Antherurum thecæ 5, varius 4 v. 6, brevissimæ, 
uniloculares, turgidæ, inter se connatæ, basi squamarum omninó adnate, 
anticè foramine amplo dehiscentes. Pollen à cellulis globosis levibus 
compositum, pulverem sulphureum æmulans. 
Foam. Amenta in ramulorum apice terminalia, solitaria, sessilia, globosa, 
multiflora: squamis & pericarpio 3—6-dentato bracteáque lanceolata acu- 
minata inferne concretis compositis, crassis, coriaceis, rigidis, unguicu- 
latis, regione placentiferá dilatata, fungosa, vix protuberanti : ungue 2 
lineas longo, verticalitér compresso, hine obtuse elevato-carinato, inde 
rectiusculo, convexo, sulcato. Ovula 4 V. 9, erecta, atropa, ovata, 
compressa, verticalia, invicem se subimbricata, margine anguste alata, 
