Campbell's Islands.] FLORA ANTARCTICA. 143 



thecam paulo incrassata. TJieca suberecta, parvula, oblonga, basi obconica, seta concolor, apophysi angusta. Peri- 

 slomium stramineurn. Operculum tlieca paulo brevius, basi conoideum, rostro recto cyHndraceo, margine submem- 

 branacea, seniitliaphana. Calyptra tliecse parimi longior, conico-subulata, fusco-lutea, apice rufo-fusca, basi ciliis 

 plurimis coiifertis fimbriata. 



A most beautiful little flaccid and tender species, of a pale straw colour, with the calyptra exactly as in Bawsonia 

 splachnoides, Schwaeg., whence the species will form a connecting link between Baltonia and Hookeria (PterigophyMum, 

 Brid.). It is not improbable that this curious structure of the calyptra, which appears to be of very rare occurrence 

 in the genus, may, in conjunction with the erect theca and some other peculiarities, prove of sufficient importance 

 to separate these species from all other Hookeria. 



Plate LXII. Fig. I. — 1, a specimen of the natural size; 2, a leaf; 3 and 4, theca; 5, operculum; 6, ca- 

 lyptra : — magnified. 



3. Hookeria denticulata, Hook. fil. et Wils. ; caule suberecto parce ramoso, foliis laxe Lmbricatis sub- 

 quadrifariis lateralibus disticbis intermediis appressis subrotundis grosse dentatis nervo ad medium evanido, 

 theca pendula ovata, operculo rostrato, calyptra glabra. (Tab. LXII. Fig. II.) 



Hab. Lord Auckland's group and Campbell's Island; in wet and marshy places, not uncommon, rare 

 in fruit, which was only seen in the former locality. 



Caules pollicares, parce ramosi ; rami compressi, subincurvi, siccitate rigidi. Folia configuratione sat varia, 

 late oblonga, ovata, v. obovata, obtusa, musco recenti micantia, pellucida, siccitate nigricantia, subcrispa, fragilia, 

 madore tardius nervo valido plerunique furcato infra medium evanido interdum brevissimo, areohs majuscidis hexa- 

 gonis; perichatialia parva, ovata. Seta ■§■ unc. longa, crassa, vix torta, rubra. Theca cernua v. pendula, elliptica, 

 basi atteuuata, rufo-bruunea, opaca. Peristoma dentes extend flavi, lineis duobus rubris notati. Operculum rostra- 

 turn, rectum, theca brevius. Calyptra conico-rnitrseformis, glabra, carnosa, rufo-fusca. 



Our specimens want both the operculum and calyptra, the descriptions of which are taken from Tasmanian 

 specimens. This species bears much affinity to H. quadrifaria, but is smaller and readily distinguishable by its 

 dentate leaves. In general aspect it approaches the H. cristata. 



Plate LXII. Fig. II. — 1, specimen from Cape Horn of the natural sice ; 2, a Campbell's Island specimen 

 of the natural size ; 3 and 4, leaves : — magnified. 



4. Hookeria pennata, Smith; caule erecto simplici, foliis bifariis verticalibus ovato-lanceolatis serratis 

 subenerviis, stipulis orbicularis mucronulatis serratis, seta perbrevi, theca suberecta ovata, operculo conico 

 acuminato. H. pennata, Smith, in Linn. Trans, vol. is. p. 277. Hook. Muse. Exot. t. 163. Cyathophorum, 

 BriJ. Bryol. Univ. vol. ii. p. 722. 



Var. /3, minor; foliis rotundatis concavis fusco-olivaceis. (Tab. LXII. Fig. III.) 



Hab. Lord Auckland's group ; in the dark woods, barren : var. /3, on decaying stumps of trees by a 

 water-course, also barren. 



The var. /3 is certainly not entitled to rank as a species, though at first sight its difference appears striking. 

 Another form, probably also a variety, with very narrow leaves, has been sent from Assam by Mr. Griffith, under 

 the name of Neckera Adiantum, Griff. MSS. Hookeria pennata, on account of its accessory leaves (stipules), ap- 

 pears most naturally allied to those species included by Bridel in Hypopterygium ; it is only in the much advanced 

 state that the vagimda becomes hollow and cup-shaped, whence Bridel's name of Cyathophorum is scarcely tenable, 

 considering that the vaginula in other species of Hookeria is very turgid. The calyptra is truly mitriforrn. 



We have New Zealand specimens of this magnificent moss, nearly a foot long and loaded with theca?. 



Plate LXII. Fig. III. — 1, a specimen of the natural size; 2 and 3, leaves : — magnified. 



