1. Dkyptodon rupestris, Hook. fil. et Wils.; caule gracili fastigiato-ramoso, foliis patentibus ovato-lanceolatis carinatis margine recurvo nervo subcontmuo, seta brevi, theca elliptico-oblonga erecta, operculo rostrato. (Tab. CLII.fig. I.)
Hab. Hennite Island, Cape Horn ; moist rocks on the northern slope of Mount Foster, alt. 600 feet.
Caules 1— 2-unciales, dense csespitosi, gracilescentes, fastigiato-ramosi. Folia dense imbricata, patentia, ovato-lanceolata vel ovato-acuminata, inferiora subsquarrosa, superiora recurva, acutiuscula, carinata, margine subrecurva, nervo rubello, siccitate appresso-incurva, plus minusve spiraliter contorta, lurido-viridia. Perichatialia latiora, elliptieo-oblouga, obtusa. Seta brevis, lin. longa, recta, siccitate tortilis. Theca erecta, clliptico-oblonga, sub-pyritbi'uiis, parvula, subcoriacea, rufo-brunnea, ore contracto. Peristoma dentes subsimplices, rubri, conniventes, siccitate patentes. Operculum rostro acicidari, theca paulo brevius. Calyptra non visa.
A more robust species than D. crispuluss (nobis), with the leaves shorter, not piliferous, and the thecae larger.
Plate CLII. Fir/. I. — 1, plant of the natural size ; 2 and 3, leaves ; 4 and 5, theca; ; 6, teeth of peristome : — magnified.
2. Dryptodon crispalas, Hook. fil. et Tils.; vid. Part 1. p. 124. pi. lvii. f. ix.
Var. 0. foliis siccitate patuhs rigidioribus.
Hab. Kerguelen's Land, in gravelly beds of rivulets.
Also a native of Campbell's Island, but not seen at Cape Horn or the Falkland Islands.
9. RACOMLTRIUM, Brid.
1. Racomitritjm protensum, Al. Braun; Brack et Schimper, Bryol. Europ. fasc. 25-28. tub. Drypt. 2. R. aquaticum, Brid. Bryol. Univ. vol. i. p. 222. R. cataractaruni, Braun, Brid. 1. c. Svppl. p. 776.
Var. 1, subaquaticiun, foliis acutis subsecundis.
Var. 2, canle humili, thecis minoribus.
Var. 3, caule robustiore, foliis longioribus secundis.
Hab. Hermite Island, Cape Horn ; all the varieties. Falkland Islands ; var. 2 (barren) and var. 3. Kerguelen's Laud, also barren).
The last variety much resembles R. aciculare, Dill., but has acute leaves and the teeth of the peristome an longer and more slender. It is perhaps still more nearly albed to Trichostomum subsecimdum, Hook, and Grev., (Hook. Ic. PI. t. 17. f. 5), chieily differing in its more robust habit and shorter seta;.
2. HA-COMYnawMfascimdare, Dill., Bridel, Br. Univ. vol. i. p. 218. Brack el Sckin/p. Bryol. Europ. Trichostomum fasciculare, Sehwaegr. Suppl. I. pt. 1. p. 155. t. 38.
Var. 2, caule gracili, ramulis brevissimis, foliis subsecundis luteo-viridibus, calyptra pallida.
Var. 3, caule gracili subsinipliei, foliis acutiusculis siccitate subappressis, seta breviorc, calyptra pallida.
Hab. Hermite Island, Cape Horn ; all the varieties.
The last variety has some resemblance to It. heterostickum, var. y. gracilescens, (Bruch and Schimper), but differs in having the leaves more acute and the teeth of the peristome larger and more regularly formed.
3. Racomitbitjm keterostickum, Brid.; Bryol. Univ. vol. i. p. 211. Brack et Schimper, Bryol. Europ. fasc. 25-28. p. 9. t. 1. Trichostomum heterosticlnun, Ilcdir. Muse. Frond, vol. ii. t. 25.
