cuspidate; st. l. ovate acute, br. l. lanceolate acute præmorse slightly fringed and bordered; per. l. broadly ovate, acute, ped. short: dioicous.
Wet bogs. VI. VII.
17. S. recurvum. P. Beauv. "Distinguished from the last by its branch leaves, recurved when dry, elliptical, not attenuated towards the apex; usually growing out of the water, whilst S. cuspidatum is almost submerged."—G. E. Hunt.
Common in bogs.
var. δ. laricinum. Spruce. l. loosely imbricated,
slightly undulate when dry, areolæ very
minute.
18. S. contortum. Schultz. St. 3-6in. rigid blackish,
"with a single layer of cortical cellules", and with crowded
generally contorted attenuated branches; leaves ovate-lanceolate,
acute concave, frequently 3-toothed at the apex,
the cellules bordered with a row of small pores at the back
of the leaf: dioicous.
Bogs and ditches. VII.
var. γ. obesum; stem more robust, branches thicker
and longer, leaves larger.
19. S. subsecundum. Nees & H. Allied to contortum, but
more lax in habit, stems more slender, with shorter branches
and with the branch leaves generally more or less secund.
20. S. curvifolium. Wils. MS. Allied to the last; stem with a cortical layer of two or three rows of cellules, leaves without marginal pores, entire, acute.
