S. Pylæsii, and, on the other hand, the presence of numerous and minute ones in the hyaline leaf-cells of S. cyclophyllum, do not oppose this view, the same diversity occurring in complete forms of S. subsecundum.
They have been referred to S. cymbifolium, but the cortical cells of their stems and branches are destitute of fibrillæ, and their leaves are not papillose on the dorsal apex.
TAB. 6.—Sphagnum cyclophyllum.
1. Plantæ naturali magnitudine.
2. Pars canlis foliosi.
3. 4. Folia.
5. Apex folii.
6. Sectio transversalis folii.
7. Areolatio folii
8. Caulis transversim sectus.
The following are all the species of Sphagnum at present known to occur in North America, together with their principal synonymes.
1. S. acutifolium, Ehrh.; Schimp. Gesch d. Torfm. p. 56, t. 13 & 14; 5. capillifolium Hedw.; S. tenerum, Sulliv. & Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 11; Sulliv. Mosses U. States, p. 11.—Bogs, common.
2. S. fimbriatum, Wils. in Hook. & Wils. Musc Antarct. p. 92; Bryol. Brit. p. 21; Schimp. Gesch. d. Torfm. p. 59, t. 15.—British America, and Northern U. States.
3. S. molle, Sulliv. Muse. Alleghan. No. 205, Mosses U. States, p. 13, Icones Muse. p. 7, t. 4; Sulliv. & Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 16; S. tabulare, Sulliv. Musc. Alleghan. No. 204, Mosses U. States, p. 12, partly; S. compactum & var. Brid. e Mull. Synop. Musc. 2, p. 539.—Georgia to New Jersey.
4. S. Mülleri, Schimp. Gesch. d. Torfm. p. 73, t. 26; S. molluscoides, Müll. Synop. Muse. 1, p. 99; S. acutifolium, var.? Sulliv. Musc. Alleghan. No. 203; S. tabulare, Sulliv. & Lesqx. Musc. Bor.-Amer. Exsicc. (ed. 1), No. 15; Sulliv. Mosses U. States, p. 12, partly, Icones Musc. p. 9, t. 5.—Southern States.
5. S. Portoricense, Hampe in Linnæa, 1852, p. 359; S. Sullivantianum, Austin, in Amer. Jour. Art. & Sci., 1863, p. 252; Sulliv. Icones Musc. p. 2, t. 2.—Porto Rico, West Indies. Ponds, New Jersey.
