: Campbell 
16 CRYPTOGAMIA ANTARCTICA. [Auckland and 
E Theca guber 
This agrees with no other species of the genus in habit. It is allied to Dicranum filiforme, Schwaeg., but has nbi, ۳ 
entire teeth. The calyptra and operculum we have only seen detached amongst the leaves. There is a very The ab 
similar plant in the Hookerian Herbarium, received from Mr. Dickson; it has however a much longer seta, the " 
pericheetial leaves are smaller and shorter, the cauline subsecund, more crisped when dry, and furnished with a Voyage) : 
thinner nerve. longen, m ۱ 
1 : ee one having o 
Prate LVIII. Fig. IIT.—1, a specimen of the natural size; 2 and 3, leaves; 4, perichetial leaf, seta, theca, | flage 
&e.; 5, teeth; 6, calyptra :— magnified. 
- | Prat 1 
11. SPRUCEA*, Brid: . 5. | dito; 5, thee 
- Peristomium simplex. Dentes sedecim, bifidi. Calyptra ampla, glaberrima, latere fissa, basi integerrima.— 1 9, Dior 
Holomitrium, Bridel. Endl. et Mart. fl. Bras. p. ۰ 1 needs af 
The generic name was founded on a mistaken view of the nature of the calyptra, described by Bridel as “ elongato- ۱ seta mediocri 
conica, basi coarctata latereque integerrima ; ” it is entire, in a very young state only, before the theca is developed. y 
Hornschuch first modified the description of that organ, which is truly dimidiate in all the species, though not as the | Has. 1 
last named author describes it, “ campanulata.” Except in greater size, it does not differ from that of Weissia. The Caules 3- 
essential difference between a dimidiate and mitriform calyptra arises simply from the former being too narrow to inferiora subs 
contain the mature theca, whilst the other is of sufficient capacity for that purpose. In habit this genus appears to us mune arde o 
far less intimately allied to Racomitrium than to Didymodon, with which it coincides in the dilated bases of the leaves ; | Inga enervia, 
the chief peculiarities are the shorter teeth and longer operculum, characteristics which, if taken in conjunction with : "TE^ 
the large pericheetial leaves, may serve to keep the present distinct. Dales pro gen 
8 
cuvirostrum. 
1. Sprvora perichetialis, Brid.; caule erecto ramoso, foliis imbricatis erecto-patentibus lanceolatis This very 
acuminatis margine planis, nervo continuo, perichetialibus vaginantibus, theca oblonga, operculo aciculari. nit m 
Holomitrium perichetiale, Brid. Bryol. Univ. vol. i. p. 927. Trichostomum, Hook. Muse. Exot. t. 73. leves, and lar 
Haz. Campbell’s Island; not uncommon on the stems of shrubs. broader, and oe 
In this species the teeth are split near the summit only, perforated below, and of a similar structure with those | larger and of a 
of a Dryptodon, Brid. Pram L 
5, mature ditt 
12. DICRANUM, Hedw. 
Peristomium simplex; dentibus sedecim, bifidis. Calyptra cuculliformis. 3, Dice 
liis longe act 
1. Dicranum Menziesii, Tayl.; caule ascendente subramoso, foliis secundis setaceis basi lanceolatis 10 il, pt 1, y 
subrigidis apice sub lente serrulatis siccitate strictis nervo latiusculo valido subexcurrente, seta brevi, theca E Y 
elliptico-oblonga basi substrumosa semiimmersa, operculo longirostro. D. Menziesii, Taylor in Phytologist, ۳ * 
vol. ii. p. 1094. E. : 
: 2" 
Has. Lord Auckland's group; on trunks of trees sparingly, barren. 
: E i The habi 
Caules semiunciales. Folia suberecta, conferta, 3-5 lin. longa, valde angusta, supra canaliculata, flavescentia, ۳ ۴ ۳ 
marginibus basi inflexis; perichetialia vaginantia 3-3 breviora, basi dilatata. Seta 3 lin. longa, pallida, vix tortilis. | eien 
* Though very averse to the system of changing names, we should not feel ourselves justified in allowing that ۱ Du 
of Holomitrium, founded, as the name is, upon incorrect characters drawn from imperfect specimens, to remain. In ongissine | 
proposing that of Sprucea for this fine genus, we commemorate the services rendered to British Botany, and espe- curvata, op 
cially to Muscology, by our acute friend, Mr. Richard Spruce, of York. Var, ) 
A 
