Royal Microscopical Society. 
3 
II. — On Bog Mosses. By R. Braithwaite, M.D., F.L.S. 
3. Sph. rubellum Wilson. 
Bryol. Brit. p. 19 (1855). 
Plate XXII. 
Syn. — Sph. rubellum Wils. 1. c. T. LX. Schimper, Torfra. p. 70, T. 20 (1858); 
Synop. p. 680 (1860). Berk. Handbk. p. 306 (1S63). Lindb. Torfmos. No. 12 
(1862). Hartm. Skau. FI. 9th ed. II, p. 83 (1S61). Milde, Bryol. Sites, p. 383 
(1869). — Sph. acutifolium, Yar. £ rubellum Kussow, Torfm. p. 41 (1865). 
Bioicous. Plants slender, laxly tufted, resembling tbe small 
flaccid red form of S. acutifolium in habit, and S. tenellum in 
tenuity. Stem fragile, 2-5 in. high, sublignose, purple, coated 
tvith a thickish bark composed of four strata of cells , destitute of 
pores. Ramuli in distant fascicles, shortish, often curved or twisted, 
three, 2 arcuate, 1 deflexed ; their flask-shaped cells with the apex 
prominent, and a little recurved. Cauline leaves large, erect or 
reflexed, broadly ovate-oblong , concave, finally plicate, furnished at 
extreme apex with several small teeth, narrowly margined, hyaline 
cells large 2-3 partite, non-fibrose, non-porose. Ramuline leaves 
at base of branch very small, ovate, at middle oblong-ovate, with the 
margins in flexed in the upper part , elliptic when expanded under 
pressure, gradually acuminate, the point with three stoutish teeth, 
and several minute ones below them; leaves of deflexed branches 
elongated, all narrowly margined, reddish, here and there yellow or 
green ; hyaline cells with annular fibres, sparingly porose, gradu- 
ally smaller toward the edge, strongly projecting and confluent at 
the back, on the inner side removed from each other by the inter- 
posed chlorophyll cells. 
Male plants like the female, and more numerous ; amentula 
short, clavate, purple with broadly ovate bracts. 
Fruit immersed in the capitulum or on a shortish peduncle; 
peduncular leaves numerous, loosely imbricated, subrecurvo-patent 
EXPLANATION OF PLATE XXII. 
Sphagnum rubellum. 
а. — Female plant, a d\ — Male plant. 
1. — Part of stem with a branch fascicle. 
2. — Catkin of male flowers. 2 6. — Bract from same. 
3. — Fruit with its peduncle. 4. — Peduncular leaf. 
5. — Stem leaves. 5 a a. — Areolation of apex of same. 5 a b. — Ditto of base. 
б. — Leaves from middle of a divergent branch. 6 x . — Transverse section. 6 p . — 
Point of same. 6 a a. — Areolation of apex. 6 a b. — Areolation of base. 
6 c . — Single cell from middle x 200. 
7. — Intermediate leaves from base of a divergent branch. 
8. — Leaf from a pendent branch. 
9 x . — Part of section of stem. 
10. — Branch denuded of leaves. 
B 2 
