ADDENDA.

Fr. Sept.

Page 18. Sphagnum compactum.

This species proves to be monoicous. The antheridia are found on the slender, pendent branches, and are conspicuous from their orange colour. Their unusual position may have caused them to be overlooked until this part of the work had been printed ; but they most probably disappear or fall away before the fruit ripens. Our monoicous specimens were gathered on the 6th of May last, and show the fructification in a very early stage.

Page 229. 9*. Bryum Marratü H. & Wils. (Marrats blunt-leaved Thread Moss); monoicous ; stems gregarious, sparingly radiculose ; leaves more or less spreading, concave, elliptical, obtuse, entire, nerve vanishing below the apex; fruitstalk long and slender ; capsule small, pendulous, roundish-turbinate ; lid conical, rostellate; inner peristome imperfect, adhering to the outer teeth. (Tab. XXXII. b.) Hab. On the flat sandy shore at Southport, Lancashire; first found by

Mr. W. M. Marrat, of Liverpool, June 1854.

Stems about 4 in. long, or more. Leaves rather large, of soft texture, light green, subpellucid, scarcely reflexed in the margin, those of the perichætium narrower and longer, suberect. Fruitstalk about 1 inch long, reddish. Capsule roundish, tapering into the fruitstalk, when ripe reddish-brown, at first olive and shining, the mouth small. Lid about į as long as the capsule, more or less rostellate. Annulus large. Teeth of the outer peristome deep red, connivent into a cone, unaltered when dry, trabeculate externally. Inner peristome imperfect, adherent to the outer teeth. Spores yellowish, rather large. Inflorescence monoicous, often synoicous.

This very remarkable species was at first supposed to be an accidental form of B. latifolium of Bryol. Europ., the figure and description of which are ambiguous; but the true species, so called, has since been found growing in company with this, and is now ascertained to be essentially different, though nearly allied. B. Marratii is readily distinguished from B. latifolium by the small roundish capsule, rostellate lid, red peristome (much resembling that of Conostomum), and narrower obtuse leaves with a shorter and thinner nerve.

9** Bryum calophyllum R. Br. (broad-leaved Thread-Moss); monoicous; stems gregarious, sparingły radiculose ; leaves erectopatent, concave, roundish-ovate, entire, nerved almost to the apex ; capsule elliptic-oblong, pendulous; lid short, convex, more or less apiculate. (TAB. XXXIII. g.)

B. calophyllum R. Brown in Parry's 1st & 2d Voyages.

B. latifolium Bryol. Europ. Monogr. t. 4. Hab. On the flat sandy shore at Southport, in company with B. Mar

rattii, sparingly; found by Mr. Marrat of Liverpool. Fr. Sept.

Much resembling the last in size and general habit ; but more robust. Stems reddish. Leaves of a darker green colour, of stouter texture, moderately spreading in the fertile plant; widely spreading on the barren shoots, which are longer than the fertile stems; wider and less obtuse than in B. Marratii

, tapering to an almost acute point; more or less recurved in the margin towards the base; nerve stronger, reddish or purplish, extending very nearly to the apex. Fruitstalk shorter and thicker, reddish. Capsule dull reddish, not glossy, oblong-oval, not tapering at the neck, the mouth larger. Lid short, not ļ as long as the capsule. Annulus large. Teeth of the outer peristome yellowish-brown, perforated at the base, trabeculate internally. Inner peristome free, with narrow perforated processes, the cilia mostly absent, but sometimes present and appendiculate. Spores green, larger.

Much difficulty has been experienced in determining this species ; our specimens of B. calophyllum, from Igloolik, being unripe, and that of B. latifolium, from M. Bruch, too scanty for dissection. The leaves of B. calophyllum are usually more obtuse and less tapering than in B. latifolium, but there seems to be no essential difference, and in the capsule and lid they perfectly coincide.

These two species form an intermediate monoicous subdivision of Sect. II., and rank between B. Ludwigüi and B. lacustre.

Page 230. 10*. Bryum Warneum Blandow (Wuren Thread-Moss); monoicous or synoicous ; loosely tufted; stem branched; branches short ; innovations more or less flagelliform ; leaves erecto-patent, ovate-acuminate, loosely reticulated, margin recurved, nerve continued to the serrulate apex; capsule pendulous, pear-shaped, ventricose; lid small, convex, apiculate ; inner peristome with very narrow processes and short rudimentary cilia. (Tab. XII. a.)

B. Warneum Blandow. Bridel. Bryol. Europ. Monogr. t. 5.

C. Müller.

Pohlia Warenensis Schwaegr. Suppl. t. 236. Hübener. Hab. In muddy or sandy places at the sides of rivers, ponds, &c. Tents

Muir, Fife, with B. pallens, August 1853, W. M. Ogilvie. On the flat sandy shore at Southport, Marrat f. Wilson.

Fr. August, Sept. Resembling B. lacustre in aspect and in general character ; and certainly not distinct in the inflorescence. Leaves narrower, more acuminated, less concave; margin more widely recurved; nerve more opaque, continued to the apex. Capsule longer, pale brown, the contracted mouth surrounded when dry with a curious glossy border. Inner peristome with narrower processes, adhering to the outer teeth, straw-coloured or orange. Spores large, greenish. Fruitstalk long and slender.

ANALYTIC KEY TO THE GENERA.

Fructification terminal. 2. 1.

Fructification lateral. 80. 2.

s Fruit terminal on a stem. 3.
| Fruit terminal on a lateral branch. 78.

s Capsule without a deciduous lid. 4. 3.

Capsule with a deciduous lid. 6. { Capsule opening by slits

Andreæa. I.
Capsule bursting irregularly. 5.
Capsule sessile; spores large ; calyptra
adhering to the vaginula

Archidium. III. 5.

Capsule pedicellate; spores small ;
calyptra loose

Phascum. IV.
s Peristome wanting. 7.
6.

Peristome present. 17.
Annual, or biennial ; leaves reticu-

lated, lax, 8. 7.

Perennial; leaves of close firm tex.

ture. 11.
8.
s Capsule oval; lid rostrate

Pottia. XXI.
Capsule obovate ; lid short, flattish. 9.
Leaves vertically distichous

Schistostega. LXXI.
Leaves inserted, spirally, in several

rows. 10.
rCalyptra large, inflated ; barren flower

discoid 10.

Physcomitrium. LX. Calyptra small; antheridia naked, axillary

Oedipodium. LXX.
[Lid adhering to the columella ; cap-
11. sule subexserted .

Stylostegium. XII.
Lid not adhering to the columella. 12.

Annual or biennial, minute; leaves 12. setaceous

Anodus. XI.

9.

16.

Calyptra small, dimidiate

Gymnostomum. V.
Calyptra large, cylindrical, covering
the capsule -

Encalypta. XXIX. (partly).
s Peristome single. 18.
| Peristome double. 63.
s Peristome a conical plaited membrane Diphyscium. XLII.

17.

18.

{ Peristome di caneca Into teeth.eng.

Orthotrichum. XXXVII.

(partly.)

26.

Glyphomitrium. XXXV.
Splachnum. LXVI.

Zygodon. XXXVIII.

23.

Teeth equidistant. 30. 21.

s Calyptra mitriform. 25.
| Calyptra dimidiate. 27.

Calyptra plicated 25.

Calyptra smooth. 26.
s Calyptra inflated below, covering the

capsule
Calyptra small, not inflated

s Capsule furrowed ; leaves with close 27. dot-like areola

Capsule smooth; leaves reticulated. 28.
Capsule with a distinct apophysis ;

calyptra not inflexed 28.

Capsule with obscure apophysis ; ca

lyptra inflexed at base. 29.
Leaves obtuse, entire ; teeth incurved

when dry 29.

Leaves acuminate, serrate; teeth re

flexed when dry
S Teeth very short, truncated
| Teeth longer, tapering or acute. 31.

S Teeth united at top into a cone 31.

Tetraplodon. LXVII.

Dissodon. LXIX. (partly.)

Tayloria. LXVIII.
Brachyodus. IX.

30.

Conostomum. LXIII.

s 32.

Calyptra dimidiate. 38.

Teeth broad. 34. 33. cloven. 36.

Schistidium. XXXII. Capsule pedicellate. 35. 35. s Calyptra smooth

<Teeth narrow, Jonger, more frequently 34. {